Edelbrock 3562 User manual

Catalog #3562, 3563, 3564, 3565
Rev. 3/06 Page 1 of 16
©2006 Edelbrock Corporation
Brochure #63-0047
PERFORMER MULTI-POINT EFI SYSTEMS
for TBI-Equipped Chevrolet/GMC Trucks & Suburbans
Catalog #s 3562, 3563, 3564, and 3565
INSTALLATION INSTRUCTIONS
®
STOP!
BEFORE BEGINNING INSTALLATION,
READ THESE IMPORTANT NOTES…
❑You must purchase a separate Edelbrock Fuel Pump Kit for this installation; single fuel tank
vehicles use Edelbrock #3581, dual-tank vehicles use #3580.
❑Check the Kit Contents and Suggested Tools lists on page 2 to be sure that you have all
items necessary to finish installation.
❑Make sure this kit is for your vehicle.
❑The kits are designed to work with stock engines with stock compression ratios. The
#3564 and #3565 are designed to work with the GM #12371054 502 c.i.d. crate engine.
❑You must change your computer chip for this kit to function on your vehicle and be
emissions legal. Complete the Chip Information Card and return to Edelbrock. We will send
the computer chip within the continental U.S., free of charge via UPS second day air. Orders
outside of the continental U.S. will be shipped via the best method at the same costs as
continental UPS second day air. If requested, customers may pay for expedited shipping
by providing a current Visa or Master Card.
❑Your vehicle’s wiring harness and electronics must be in good shape or you may not get
maximum performance and/or may experience problems. The TBI will work with less
adequate connections, but the Performer Multi-Point EFI System is much more sensitive
than a stock TBI.
❑Read all instructions before beginning installation.
❑Note that fuel tank or bed of pick-up must be removed.
❑1987-1991 vehicles with cruise control MUST use Edelbrock throttle/cruise/kickdown
cable bracket #8031. Order from your Edelbrock dealer before beginning installation.

MANIFOLD ASSEMBLY CONTENTS
Catalog #3562, 3563, 3564, 3565
Rev. 3/06 Page 2 of 16
©2006 Edelbrock Corporation
Brochure #63-0047
Qty.Description
❑1 Manifold assembly (see detail below)
❑1 Installation instructions
❑1 EPROM adapter circuit board (#3562 only)
❑1 Fuel injector wiring harness
❑1 Fuel filter adapter fitting (filter to #6 AN male) with O-ring
❑1 Return line adapter fitting
❑2 #6 AN straight pushlock fittings
❑1 3/8" i.d. pushlock heat resistant fuel line, 10 foot length
❑1 #6 AN 45 degree elbow pushlock fitting
❑1 #6 AN 90 degree elbow pushlock fitting
❑1 Fuel line clamp (floor mounted)
❑4 11" tie wrap
❑1 Throttle cable bracket
❑1 Throttle body block-off plate
❑1 Throttle body gasket
❑1 EGR gasket
❑1 3/8" NPT pipe plug
❑1 3/8” I.D. Flatwasher
Qty.Description
❑1 3/8" NPT male to 3/8” NPT female 90 Degree elbow
❑1 3/8" NPT to 1/2” hose brass fitting
❑1 2 foot length 15/32 i.d vacuum line (power brakes)
❑1 6” length 3/8’ fuel line (breather line extension)
❑1 1/2" NPT to 3/4" hose barb
❑1 36" length 3/4" i.d. heater hose
❑1 3" length 5/16" i.d. high pressure fuel line (pump to sending
unit)
❑1 2 foot length 5/32" i.d. vacuum line (regulator & EGR)
❑1 5-1/8" i.d. air cleaner base gasket
❑1 12" length 1/4" i.d. vacuum line (MAP)
❑1 1/2” hose clamps
❑2 3/4" hose clamp
❑1 3/8" hose clamp (fuel injection clamp)
❑1 5/16" hose clamp (fuel injection clamp)
❑1 1/4" x 1/4" out x 5/32" bottom out vacuum “T” fitting
❑1 10-16 x 3/4" TEX screw (self tapping)
❑1 Air Cleaner Lid decal
PERFORMER MULTI-POINT EFI
KIT CONTENTS
Qty.Description
❑1 Intake manifold
❑1 Driver’s side (left side) fuel rail
❑1 Passenger’s side (right side) fuel rail
❑4 1/4"-20 x 1.25" Hex head cap screw rail hold down bolts
❑1 Fuel pressure regulator
❑8 Magnetti Marelli®pico injectors
❑1 Fuel crossover line (including adapter and schrader valve)
❑1 Fuel inlet fitting (3/8" male pipe to #6 AN male, steel)
Qty.Description
❑1 Fuel regulator nut and Viton O-ring
❑1 Viton O-ring; fuel regular nut (1/2" o.d. 5/16" i.d.)
❑4 1/4" i.d. AN thin flat washers
❑1 1/4"-20 x 1/2" hex head cap screw
❑1 1/4" i.d. split lock washer
❑1 Schrader valve cap
❑4 1/4" internal star lock washers
SUGGESTED TOOLS AND MATERIALS FOR INSTALLATION
❑3/8" ratchet socket set with extensions
❑Combination set of open-end wrenches (SAE and metric)
❑Jackstands, screwdrivers, pliers, crescent wrench, hacksaw,
hammer, brass punch and assorted hand tools
❑Torx screwdrivers
❑Tin snips
❑White grease
❑Teflon thread sealant or equivalent
❑Intake gasket set (Edelbrock #7205, GM #10181398, or
equivalent)
❑Thermostat housing gasket (GM #10105135, Fel-Pro #2201, or
equivalent)
❑Gasket sealant (Gasgacinch, etc.)
❑RTV Silicone sealant; O2sensor-safe
❑Wire stripper & crimper
❑Heat gun or lighter

Catalog #3562, 3563, 3564, 3565
Rev. 3/06 Page 3 of 16
©2006 Edelbrock Corporation
Brochure #63-0047
IMPORTANT INSTRUCTIONS
For ordering your FREE Edelbrock computer chip. You must use
an Edelbrock chip with the Performer Multi-Point EFI conversion
®
You must change the computer chip in your stock computer (ECU) for proper functioning and maximum performance with the
Edelbrock Performer Multi-Point EFI for 7.4L or 8.2L Chevy/GMC engines.
To receive your ECU chip, please complete the attached postage-paid card and send to Edelbrock. After receiving your card,
Edelbrock will send the computer chip within the continental U.S., free of charge via UPS second day air. Orders
outside of the continental U.S. will be shipped via the best method at the same costs as continental UPS second
day air. If requested, customers may pay for expedited shipping by providing a current Visa or Master Card.
When filling out your information card, please print clearly.
The information below will help you to locate your ECM Service Number and Broadcast Code:
SERVICE NUMBER BROADCAST CODE
Typical ECM Label
SERV. NO. 16144288 AWHF
86AWHF K112731181
16155501 AWHF
86AWHFK112731181
1. The ECM is accessible in pick-ups by removing the glove box liner. This requires removing four (4) small hex head screws
and pulling out the liner. The ECM sits vertically in a plastic cradle on the far right side of the dash with the connectors
facing to the rear.
2. The Broadcast Code is stamped on a white paper label, located on the top of the ECM. Typical codes for the 5.7L run
from AKSM to BDXX, increasing alphabetically with later release dates.
There is a plastic decal on the bottom of the glove compartment with a list of the RPO codes for that vehicle.
This is a listing of the “RPO” codes and what they stand for:
CODE VEHICLE EMISSIONS
NA1 Under 8600 GVW
NA4 Over 8600 GVW
NA5 Federal
NB2 California
NB8 New York/California
NM8 Special Fuel Compatible
CODE TRANSMISSION
MD8 4L60 Auto
M30 4L68E Auto
MT1 4L80E Auto
MG5 Manual w/ Deep Low
MY2 Manual 5-Speed
M20 Manual 4-Speed
CODE ENGINE
L03 5.0L TBI V8
L05 5.7L TBI V8
L19 7.4L TBI V8
CODE REAR AXLE
GU2 2.73:1
GU3/GW9 2.93:1
GU4 3.08:1
GU6 3.42:1
GT4 3.73:1
GT5 4.10:1
HC4 4.56:1

Catalog #3562, 3563, 3564, 3565
Rev. 3/06 Page 4 of 16
©2006 Edelbrock Corporation
Brochure #63-0047
®
INSTALLATION INSTRUCTIONS
for Performer Multi-Point EFI System
for 7.4L TBI-Equipped Chevrolet/GMC Vehicles
Catalog #3562 and #3564 for 1987-1990 Model Years
Catalog #3563 and #3565 for 1991-1995 Model Years
• APPLICATION INFORMATION: Performer Multi-Point EFI Systems are designed for 1987-1990 (#3562 and #3564) and
1991-1995 (#3563 and #3565) 7.4L Chevy/GMCs originally equipped with Throttle Body Injection. These complete
systems utilize the stock computer and throttle body unit for a simple and effective conversion to multi-point fuel injection.
Fuel is injected directly into each port in the head for ideal fuel distribution and efficiency.
• TECHNICAL SUMMARY: In 1987, Chevrolet introduced their Throttle Body Injection (TBI) systems. Produced from 1987
to 1995 on all pick-up trucks and Suburbans, this TBI system was essentially an intermediate step between a carburetor
and true port (multi-point) fuel injection. In these TBI systems, two injectors are positioned above the throttle blades of a
two-barrel throttle body and fuel is injected into the manifold, much like a carbureted system. This arrangement suffers
from distribution problems because the fuel spray from the injectors does not stay in suspension with the incoming air,
resulting in uneven distribution. Our Performer Multi-Point Systems include an intake manifold designed to deliver an
equal air charge to each cylinder. Each injector delivers exactly the same amount of fuel to each cylinder for an extremely
even air/fuel ratio from cylinder-to-cylinder. This permits us to tune the system for ideal fuel and spark delivery for more
horsepower, torque and improved mileage.
Performer Multi-Point Systems include all parts needed to make the conversion. The stock TBI unit is retained as an air
valve and the factory computer (re-programmed) is also retained to control the injectors in a batch-fire mode. In the
Edelbrock systems, all of the factory sensors are retained and fully functional. The compact size was achieved by using
extruded aluminum fuel rails with new Magnetti Marelli®pico injectors. These are half the size of conventional style
injectors.
• SPECIAL NOTICE: This Edelbrock part has received an Executive Order number (E.O. #) from the California Air Resources
Board (C.A.R.B.) making it legal for street use on pollution-controlled motor vehicles in all 50 states. To assist you with
emissions inspection, we have included a silver fan shroud decal to verify that this part is a legal replacement part on the
vehicle for which it is cataloged. The adhesive-backed decal should be affixed to your fan shroud next to the existing
emission and engine specification decal. Do not cover your original equipment specification decal with the Edelbrock fan
shroud decal. E.O.# decal is shipped with the computer chip .
If you have any questions, please call our...
EFI Technical Hotline at: [phone], Option 3
8:00 am - 5:00 pm, Monday-Friday (Pacific Standard Time)

Catalog #3562, 3563, 3564, 3565
Rev. 3/06 Page 5 of 16
©2006 Edelbrock Corporation
Brochure #63-0047
INSTALLATION PROCEDURE
1. Disconnect negative battery cable.
2. Drain coolant.
3. Remove air cleaner assembly.
4. Label all lines, wires, and connections with masking tape
before disassembly to aid in re-assembly. Disconnect all
throttle cables and accessories, disconnect all vacuum lines to
throttle body. Disconnect both fuel lines at rear of throttle body.
Be careful of line pressure. Remove 3 throttle body mounting
bolts and remove throttle body.
Remove top alternator mounting bolt and the bolt holding the
belt tension assembly. Remove two bolts that hold bracket to left
front support base, which is mounted to the two left front
manifold bolts. Remove bracket assembly. NOTE: On later
vehicles, this procedure may not be required.
9. Alternator has a support bracket running from the two left front
intake manifold bolts to the rear of the fan belt tension assembly
and the upper alternator bolt (this will be re-used during
assembly). Release the belt tension using a ratchet and socket,
then remove the fan belt.
8. The electronic vacuum regulator valve is mounted on the third
bolt from the front, on the right side of the manifold. When you
remove the bracket, there will be two support brackets running
from different locations on the backside of the A/C compressor,
both meeting the manifold at one spot. Remove bolts and
brackets. (Brackets will be re-used).
6. Disconnect vacuum fitting for power brake booster from intake
manifold.
7. Remove heater hose connection from the manifold (most will be
located at the right rear of the manifold).
5. Remove top radiator hose, remove thermostat housing and
thermostat. NOTE: Ground wires may be located on thermostat
mounting bolt. It is important to note the location of all ground
wires so they can be put back exactly as they were.
It is a good idea to replace your old thermostat at this time. For
proper ECM operation it must be the correct temperature, usually
195°F (check manufacturer's specifications). Remove the water
pump bypass hose located under the thermostat on front of the
manifold. Looking at the front of the engine, directly to the left of
the water pump bypass is the coolant temperature-sending unit.
Disconnect the electric connection, remove the sending unit and
set aside. It is better to remove sensor at this time to avoid
damage upon manifold removal. The sensor will be re-used in
the new manifold.
Coolant
Sensor
Water Pump
Bypass
Alternator
Bracket

Catalog #3562, 3563, 3564, 3565
Rev. 3/06 Page 6 of 16
©2006 Edelbrock Corporation
Brochure #63-0047
10. DISTRIBUTOR REMOVAL
Remove plug wires from top of distributor cap. Make note of
location of each wire. Remove distributor cap. Before removal of
distributor, note the location of the distributor body and the
ignition rotor by marking distributor body with a felt tip marker.
Loosen distributor clamp and remove distributor. Be careful not
to turn engine over after distributor has been removed.
With the distributor removed, remove the ignition coil and throttle
bracket. NOTE: On early applications, you will not re-use your
throttle bracket. You will use the Edelbrock throttle bracket
supplied in kit. Remove remaining manifold bolts and brackets,
noting the location of studded bolts so you can replace them in
the same location. The MAP sensor bracket assembly is
mounted on the right rear manifold bolts. It will mount in the
same location on new manifold. If you remove any ground wires,
note their location as well.
11. MANIFOLD REMOVAL
Using a flat blade screwdriver or a small pry bar, wedge tool
under front end seal of the intake manifold and pry to break seal.
Remove intake manifold, being careful not to spill too much
coolant into engine. If any coolant is spilled, use paper towels to
absorb quickly. Clean out any debris that may have fallen in
engine valley upon removal of manifold. Place rags over valley
and place rags or paper towels into all exposed ports on cylinder
heads to keep out debris.
12. FUEL LINE REMOVAL
Remove two existing fuel lines hanging over the rear, near center
of the engine block. On most late models (1992-1995), the fuel
lines are routed down the left side of the truck, coming down the
bellhousing and running over to the frame where they connect to
the fuel filter. The return line will have a coupler-type fitting
where it connects. Remove these lines; they will not be used
with the new kit. Be careful of any remaining fuel in lines. Then,
there will be a mounting clamp holding lines to the upper left
transmission mounting bolt. Remove fuel line support bracket,
along with line.
NOTE FOR 1987-1991 MODELS:
The fuel lines may run down the right side of the bellhousing.
Both of the connection fittings will be between the transmission
and the frame. Disconnect both lines, being careful of remaining
fuel in lines. The mounting clamp holding both lines is usually
bolted to the rear of the cylinder head. Remove mounting bolt or
nut and the fuel lines. These lines will not be used in new
system. Remove the two fuel lines from the junction point back
to the fuel filter for the inlet line, and to the return junction block,
located just above fuel filter. These two lines will not be used in
the new system.

Catalog #3562, 3563, 3564, 3565
Rev. 3/06 Page 7 of 16
©2006 Edelbrock Corporation
Brochure #63-0047
13. INTAKE PREPARATIONS
With fuel lines out of the way, scrape remaining intake gaskets
off of cylinder heads and scrape both end seals clean. With
surfaces clean, install intake gaskets to cylinder heads. Use GM
gaskets #10181398. Apply gasket sealant to gaskets on surface
facing heads only. Glue gaskets in place.
While gaskets set-up, place the new manifold next to the old
manifold. You will need to swap certain parts like the distributor
hold down clamp and bolt, EGR valve and on some models, a
vacuum fitting located at the right rear of throttle body pad.
When re-installing the EGR valve on the new manifold, notice that
it is relocated up near the thermostat area. The EGR mounting
pad is drilled for the different EGR valves used from year to year.
We provide a gasket that will accommodate all EGR valves.
Determine which EGR bolt holes are to be used and install your
old studs and EGR valve onto manifold.
For models equipped with a power brake vacuum booster, you
will need to install the 1/2" NPT-to-1/2" barbed 90-degree
fitting. This will be used later in the installation for your vacuum
supply relocation. This fitting goes on the rear of the throttle
body pad.
NOTE: If any of the holes in the manifold are not used, plug them
with the pipe plugs supplied and always use Teflon sealant or
equivalent when installing fittings and plugs (does not apply to
unused EGR pad holes).
NOTE: On early models (1987-1990), the cruise control vacuum
diaphragm bracket is mounted directly on the intake manifold.
For these models, it is necessary to relocate this assembly. Using
GM part #14056623, mount this bracket to the left rear cylinder
head. Install your diaphragm assembly to this bracket.
NOTE: It is easier to install this bracket before manifold is
installed on engine.
14. MANIFOLD INSTALLATION
Before installing the manifold, make sure all ports and the valley
of the engine are clean. Apply a 1/8" bead of 02 sensor safe
silicone around the four water ports on the engine. Apply a 1/4"
bead of silicone on the two end seal areas of the engine block.
Install the intake
manifold onto the
engine, be careful to
set it down as
straight as possible.
Do not set down and
slide into place.
Install your stock
intake manifold
bolts in the same
locations that they were removed from. The bolts with studs
need to be in certain holes for the brackets.
If your vehicle has the cast iron base for the bracket which came
off the rear of the alternator and idler pulley, you will need to
install it at this time.
Note: Some grinding on the bracket ears and on the rear of the
bracket, where it makes the bend, may be required. It is
important to make sure the bracket sets onto the manifold
squarely to avoid damage to the bracket and manifold.
New EGR
Location
Stock EGR
Location
Cast Iron Bracket

Catalog #3562, 3563, 3564, 3565
Rev. 3/06 Page 8 of 16
©2006 Edelbrock Corporation
Brochure #63-0047
Tighten the manifold bolts following the tightening sequence
shown below. Torque to 25 ft. lbs. Install the distributor in the
engine. Using your marks as a reference, snug down distributor
clamp.
NOTE: Final timing will be adjusted after engine start-up. Install
cap and re-install plug wires in the correct location using your
marks as a reference. Install ignition coil.
NOTE: We provide four bases for the two different coil styles. On
early models (1987-1990), you will use the two coil bosses
towards the rear of the manifold. For the later model style coils,
you will use the two bosses towards the front of the manifold.
Install coil wires and electrical connections on coil and
distributor. Re-install your MAP sensor bracket, which mounts on
right rear second and third studded manifold bolts. Install the
EGR vacuum regulator valve on the third bolt from the front on
the right side.
If your vehicle has the bracket for the alternator and idler belt
tension pulley, you need to install it at this time. Re-install
tensioner and bracket assembly. Re-install serpentine belt.
Make sure tensioner bolt and bracket bolts are tight!
15. THERMOSTAT AND HOSES
If your vehicle came with the 44mm O-ring style thermostat, you
will need to purchase a standard size thermostat and gasket.
You will re-use your original housing. Thermostat operation and
engine coolant temperature are very important for proper ECM
operation. Check service information for suggested temperature
(usually 195 degrees). Install thermostat and housing. Re-install
ground wire to one of the thermostat housing mounting bolts (if
originally equipped).
Install radiator hose and water pump bypass hose. Re-install the
coolant temperature sending unit (located to the right of the
water pump bypass hose). Check coolant sensor wire
connection and make sure all hose clamps are tight.

Catalog #3562, 3563, 3564, 3565
Rev. 3/06 Page 9 of 16
©2006 Edelbrock Corporation
Brochure #63-0047
16. HEATER HOSE SUPPLY LINE
For all years, the heater core supply will come from the right front
water port on intake manifold. You will need to install the 1/2"
NPT-to-3/4" hose fitting into manifold using Teflon sealant on
threads. Remove your existing heater supply hose at its junction
point, usually at the heater core. Using the 3/4" heater hose and
two clamps supplied, route the hose from the intake manifold to
the heater core supply entrance. Some cutting of the hose may
be required. Secure hose on both ends with hose clamps.
17. INJECTORS AND RAILS
NOTE: Fuel injectors and fuel rails are assembled on
manifold and ready to run unless you had to remove them
for manifold installation. If they were removed, use the
following procedure for re-installation. If not, skip this
procedure and move on to the next step.
Using non-silicone based spray lubricant or white grease,
lubricate injector O-rings (top and bottom) before sliding them
into fuel rails. Push injectors into rails, making sure that the
electrical connectors on injector bodies face up. Now push fuel
rails and injectors into manifold. Use caution not to damage
O-rings upon installation. Place fuel rail with pressure
regulator on passenger's side with regulator toward rear of
engine. Place other rail on driver's side of manifold. Push down
with enough force to seat lubricated O-rings in manifold, making
sure not to cut O-rings. Once injectors are seated and before
replacing the 1/4-20 x 1.25 bolts, make sure the injectors rotate
in their bores easily. Once installed, secure rails with 1/4" bolts
and flat washers supplied in kit. Torque to 8 ft./lbs.
18. FUEL LINE CONNECTION
From the kit contents, locate the length of 3/8" high pressure fuel
hose, one 45° #6 Pushlock fitting, one 90° Pushlock fitting, and
two straight #6 Pushlock fittings.
PUSHLOCK FITTING-TO-HOSE INSTALLATION
Use this procedure for installing each one of the Pushlock
Fittings onto hose ends:
Clamp Pushlock fitting in vise, being careful not to crush fitting.
Lubricate inside of hose end and Pushlock fitting barb with a
small amount of lubricant (oil, spray lube, or white grease). Push
the hose over the barb until it stops against the fitting collar. No
clamping is necessary.
Before making the fuel lines, you must install the fuel filter
adapter fitting and the return line adapter fitting. The fuel filter
adapter fitting is a male #6-to-16mm threaded male with an O-
ring on the end of the fitting. Install into fuel filter and tighten
securely. The return adapter fitting is the female 14mm-to-#6
fitting. This will attach to the return fuel line. NOTE: Be careful
not to damage the O-rings on the fittings or the existing fuel
lines.
Install both fittings as shown in photo.
Return Line Adapter
Fitting (14mm)
Fuel Filter Adapter
Fitting (16mm)

Catalog #3562, 3563, 3564, 3565
Rev. 3/06 Page 10 of 16
©2006 Edelbrock Corporation
Brochure #63-0047
19. FUEL RETURN LINE INSTALLATION
Install the 90° #6 pushlock fitting into the 10-foot length of hose
using the pushlock fitting installation procedures described
previously. Tape off the open end of fuel line to prevent debris
from entering. Route the open end (taped) of hose down the
bellhousing towards the fuel filter and return line area.
NOTE: This may be left or right side, depending on year and
model.
Connect the #6 90° fitting to the fuel pressure regulator fitting on
fuel injection assembly (passenger's side fuel rail). Be sure that
the hose is routed safely with no sharp bends down the
bellhousing to the frame where the connection will be made.
Determine the length needed, adding in a little extra to allow
mounting fuel line clamp to the floor of vehicle. Mark the line,
remove from vehicle and cut to length.
NOTE: Carefully flush out all debris after cutting lines!
Install #6 straight pushlock into hose. Tape end of return line
again, then re-install on vehicle. Tighten both fittings securely.
20. FUEL INLET LINE INSTALLATION
Install the 45° #6 pushlock fitting into the remaining length of
hose and tape other end to prevent debris from entering. Route
open end (taped) of hose down bellhousing and thread 45° fitting
onto rear of fuel rail. From under vehicle, determine length
needed to reach the fuel filter adapter fitting. Be sure to add a
little extra to allow mounting a fuel line clamp to the floor of
vehicle. Remove line from vehicle and cut to length. Install #6
straight pushlock into hose. Tape end of return line again, then
re-install on vehicle. Tighten both fittings securely.
From Regulator on
Passenger Side Fuel Rail
To Rear of Driver’s
Side Fuel Rail
With the lines routed so they are not kinked, use the fuel line
clamp kit supplied to mount to the floor. IMPORTANT NOTE:
Using two zip ties, fasten the fuel lines to wire harness running
down transmission (and possibly one up top) to ensure that they
are not touching firewall or any other sharp areas.
21. THROTTLE BRACKET
On all vehicles with a vacuum actuated cruise control (1987-
1991), you will need to install the throttle bracket supplied.
Install this bracket on the studded intake manifold bolts on the
left side of the manifold (third and fourth bolts from the rear).
Later vehicles use the stock bracket. Install bracket and connect
throttle cable to your new or existing bracket.
22. INJECTOR HARNESS
Lay out the injector harness (supplied in kit) on the engine,
looping it around the backside of the throttle body pad. The “tee”
with pink line connectors coming out of the bottom should end
up by the right rear of the throttle body pad, just in front of the
fuel regulator. Push 8 connectors onto injectors until they snap
on easily. The old TBI injector harness has two plugs which go to
your old injector assembly. Just below the old plugs is a black
grommet. Lay the old injector harness over the new harness and
determine the length of the old wire harness needed to splice
into the new harness. NOTE: Usually the cut will be above the
black grommet of the old wire loom.

Catalog #3562, 3563, 3564, 3565
Rev. 3/06 Page 11 of 16
©2006 Edelbrock Corporation
Brochure #63-0047
Pull rubber grommet off of wires. Force silicone (oxygen sensor-
safe) through these four holes, filling them with silicone.
Install the grommet on air valve in groove to prevent dirt from
entering the system.
23. ELECTRICAL CONNECTION
Separate four wires cut previously out of the factory loom. These
will be used to mate with the corresponding butt connectors;
green to green, blue to blue, and the two pink wires go to either
connector (on some vehicles pink to pink and pink to white). Use
stripping tool to strip end of the wires back 1/4".
After sticking stripped end into connector, crimp connector onto
wire using a crimping tool. Tug on wire slightly after crimping to
make sure you have a good connection.
After crimping all four connectors, take heat gun or cigarette
lighter (be careful not to burn wires) to heat the ends of the
connectors. They will shrink down around the wires and ensure
a tight connection. After cooling, slide all wires into black sleeve
coming off of the wire loom.
24. VACUUM HOSE
Remove the factory molded vacuum line which ran from the MAP
sensor to the rear of the throttle body. Locate the 1/4" x 12"
vacuum hose, the 1/4" x 1/4" x 5/32" vacuum tee and the 24"
of 5/32" vacuum hose from kit. Put one end of the 5/32" hose
on the vacuum nipple of the fuel regulator and loop it around the
coil area (be careful not to kink the hose). The other end should
end up in the area around the rear of the throttle body. Install the
1/4" vacuum hose from the MAP sensor to the rear of the throttle
body. This is easier with the throttle body off (estimate length if
throttle body is not yet installed). Insert plastic vacuum tee into
the section of 1/4" vacuum hose where the 5/32" vacuum hose
from the fuel regulator will easily intersect. Cut the hose and
insert the tee and connect all three hoses. For vehicles with
vacuum actuated EGR valve, you will need to remove the hard
preformed vacuum hose from the EGR vacuum regulating valve.
Install the remaining 5/32" vacuum hose from the EGR valve to
the regulating valve (cut hose as needed).
25. POWER BRAKE BOOSTER CONNECTION
Vehicles equipped with vacuum booster need to use the vacuum
port found at the right rear corner of the throttle body pad (if not
used, plug with pipe plug supplied). From kit contents, locate the
2 ft. x 15/16" vacuum hose, two clamps, 90° brass fitting, and
3/8" NPT to 1/2" hose fitting. Install 90° fitting in vacuum port
using teflon sealant, then install 3/8" to 1/2" hose fitting into 90°
fitting, aiming the hose end of fitting towards vacuum brake
booster. Remove original 90° plastic fitting from booster supply
line and install in end of vacuum brake hose supplied. Clamp
fitting to hose. Route hose to vacuum supply port (90° fitting just

Catalog #3562, 3563, 3564, 3565
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©2006 Edelbrock Corporation
Brochure #63-0047
installed in manifold). Route hose and cut as necessary to
prevent interference with linkage. Tighten both clamps and
secure with tie wrap as shown.
Tie Wrap
Brake Vacuum
Hose From Booster
to Supply Port
26. THROTTLE BODY CONVERSION
Remove the fuel inlet and return fittings at rear of the original
throttle body assembly. Next remove three torx screws retaining
the fuel injector/regulator assembly to the main body. Remove
this assembly while leaving the factory gasket in place. Using
the factory torx screws, install the injector block off plate
supplied in kit. The throttle body is now ready to be installed
using the new base gasket supplied in kit. Once installed, make
sure all vacuum and electrical connections are secure. Make
throttle connections.
Install the converted throttle body assembly and the new throttle
body base gasket (supplied) onto the manifold. Install and
tighten three mounting bolts. Make all electrical connections.
Connect the throttle cable and cruise cable assembly. Make
vacuum connections at the rear of the throttle body as well as all
of the connections in front. Double check all ground connections
and electrical connections.
27. ACCESS FUEL TANK
For the TBI multipoint conversion, it is necessary to install a high-
pressure fuel pump (#3581 for single tank vehicles, sold
separately). IMPORTANT NOTE: On trucks with dual tank set-
ups, it will be necessary to install Edelbrock Dual Fuel Tank
Conversion Kit #3580, available from your Edelbrock dealer, or
call Edelbrock directly for sales or dealer assistance: 800-416-
8628, Option 3. Dual tank vehicles do not require removal of
the tanks or pick-up bed, as the new fuel pump kit #3580
mounts on the vehicle frame. See installation instructions
supplied in kit.
Stock TBI Injector Modified TBI Injector
Dual Tanks Require Kit #3580
(Bed does not need to be removed for
dual tank pump installation)
To install pump #3581 on single tank vehicles, you must gain
access to the top of your fuel tank. If you have a Suburban, you
will need to drain the fuel tank and drop from the rear of the
vehicle. If you have a truck, we recommend removing the bed to
reach the fuel tank. On truck beds, you will usually find eight
mounting bolts, two ground wires, a couple of weather pack
electrical connectors (near license plate area), and you will need to
disconnect your fuel fill neck from the bed.
Ground
Connections
With all bed bolts and wires disconnected, four people can lift off
the bed. This takes about 20-30 minutes, which is much faster
than draining and removing tank. With bed removed, you will see
top of fuel tank. Take a brush or compressed air and clean the top
of fuel sending unit area so no debris enters in fuel when removing
this assembly. Disconnect two fuel lines, two hoses, and an
electrical connection with a ground wire. There is a center fuel
pump sending unit assembly lock ring holding assembly into tank.

Catalog #3562, 3563, 3564, 3565
Rev. 3/06 Page 13 of 16
©2006 Edelbrock Corporation
Brochure #63-0047
Fuel
Tank
Disconnect two fuel lines, two hoses, and an electrical connection
with a ground wire. There is a center fuel pump sending unit
assembly lock ring holding assembly into tank. Using a hammer
and brass punch, gently strike open edge of lock ring in a counter
clockwise direction. Keep hitting until lock ring rotates enough to
release. Again blow or brush top area clean and carefully remove
the entire assembly. Be careful on removal! Take your time!
28. FUEL PUMP ASSEMBLY
With fuel pump assembly on bench, loosen and slide up the
lower plastic clamp on top of fuel pump. Now disconnect
electrical connection. On the bottom of the fuel pump, there is a
fuel strainer sock; remove the bottom strainer sock after marking
it so you can re-assemble in the original orientation.
ALTERNATE PROCEDURE: LOWERING FUEL TANK
Suburbans (or trucks that you cannot remove the bed), require removal of the fuel tank(s). The fuel tank must be lowered from beneath the
vehicle. First drain the fuel, then disconnect the ground wire and the weather pack electrical connector. Then disconnect gas fill hose and vent
hose. Let the tank drop enough to gain access to the fuel lines, then disconnect fuel lines and remove tank from vehicle. Most tanks have two
mounting straps which must be removed.
Ground
Connection
Gas Fill Hose
Connection
Gas tank
mounting straps
Note: There is a kit supplied with the 3501 and 3502 that
provides you with new fuel line and clamps. Install the 3" length
of fuel hose onto the 3/8" steel tubing where the old fuel pump
junction hose was previously. Use the 3/8" hose clamp to secure
hose to steel tubing.
Note: You may want to replace the fuel sock at this time with a
new factory replacement. Use a small flat blade screwdriver to
gently pry around strainer and it will pop off. Carefully slide the
factory fuel pump out of the assembly. Install the new fuel pump
supplied in the kit into this assembly.

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Rev. 3/06 Page 14 of 16
©2006 Edelbrock Corporation
Brochure #63-0047
Note: The fuel line will be a very tight fit over the 3/8" tubing.
It may be necessary to lube the tubing with some spray lubricant
to ease hose installation. Slip the 5/16" clamp over the rubber
hose, then insert fuel pump barb into hose and secure with 5/16"
clamp. Be sure there is adequate clearance between the metal
clamp and the electrical connections on the pump. Some
shortening of the rubber hose may be necessary for proper
alignment of the pump with the pump hanger.
NOTE: DO NOT RE-USE THE ORIGINAL
IN-TANK FUEL HOSE OR CLAMPS.
New Hose
5/16”
5/16”
Clamp
3/8”
Clamp
Use the new rubber base gasket for fuel pump. If the big O-ring
in fuel tank is OK (not torn), you may reuse it. If necessary,
replace with original equipment O-ring from a GM dealer. Make
sure to grease large O-ring with white grease or equivalent.
Making sure clamp is tight and electrical connector is connected,
install strainer sock into same position (it will just push on with
your thumb).
Install complete assembly back in the fuel tank. Make sure you
do not bend anything while reinstalling. Lock assembly back in
place by rotating lock ring clockwise until it hits its stops. Now
tighten fuel connections and hose clamps. Make electronic
connection and ground connection. Re-install fuel tank
(Suburbans, etc.). Do not re-install bed on pick-up trucks at
this time. Before installing bed, see Fuel Pressure Test
Section on page 15.
29. HOT RESTART FUEL MODULE
You must remove the Hot Restart Fuel Module before starting
your 1987-1989, over 8600 lbs. GVW HD vehicle. The Hot Restart
module is located on the Break Pedal Bracket between the
firewall, and the back of the gauge cluster. Its dimensions are
approximately 1-3/8” x 2-1/8” x 3-1/4”. There are three wires in
the harness for the Hot Restart Fuel Module; a pink wire with a
black stripe, a black wire with a white stripe, and a tan wire with
a white stripe.
CAUTION: iF THE HOT RESTART FUEL MODULE IS NOT
REMOVED, IT WILL OVERLOAD AND BURN ON START UP,
CAUSING SMOKE AND POSSIBLE FIRE HAZARD!
30. NEW COMPUTER CHIP INSTALLATION
IMPORTANT NOTE: COMPUTER CHIP MUST BE
ORDERED BEFORE BEGINNING INSTALLATION.
Open glove box and remove four screws mounting the inner tray.
Remove glove box tray.
On the ECM, you will find the service number and the broadcast
code. Both are needed in order to make a new calibration chip
for your particular vehicle. This should be done well before
installation to allow enough time for the new chip to arrive. Use
the chip order card enclosed with these instructions.
After removing two screws and cover from ECM, remove old chip
by pressing down on the two outside retaining clips.

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©2006 Edelbrock Corporation
Brochure #63-0047
This installation uses a piggyback chip adapter. Push your new
computer chip into the adapter, then install these two parts into
ECM. There is an alignment lug so that they only fit one way. Be
careful not to bend any pins. Put plate back on and re-install
ECM in the vehicle. NOTE: Early models do not require the
adapter; the chip simply replaces the stock chip.
31. INITIAL START UP
Re-connect battery negative cable. Double check connections
and fill radiator with a 50/50 mix (or manufacturer’s
recommendation) of anti-freeze and water. Turn key to the “On”
position. You will hear the fuel pump run for a few seconds and
stop as it fills the fuel system with fuel. There will be air trapped
in system. At this time, inspect all fuel connections for leaks. If
there are no leaks and everything looks good, crank it over. It
might not start right away. If not, stop and cycle key so fuel pump
runs (this will allow air trapped in system to evacuate). Try to
start again. Once running, check for fuel leaks again, then water
leaks.
32. SET IGNITION TIMING
If there are no leaks, set ignition timing following manufacturer's
procedures and specifications. You must disconnect the ignition
interrupter wire before you set the timing. This is a single tan
wire with a black stripe and a black plastic connector. On late
style vehicles, it is usually found under the dash on the
passenger's side, between the blower motor and the duct work
(next to the courtesy light). On earlier vehicles, it is usually found
on the passenger's side firewall, behind a plastic cover which is
secured with two screws. If you are not certain of the location of
this wire, consult factory service manual. Re-connect wire after
timing is set. If you have a truck, re-install bed after checking for
leaks around sending unit assembly.
NOTE: You may notice a slight surge in the idle in “
Park” or
“ Neutral”. This is normal and will smooth out when the
transmission is shifted into any drive gear.
Retaining
Clips

Catalog #3562, 3563, 3564, 3565
Rev. 3/06 Page 16 of 16
©2006 Edelbrock Corporation
Brochure #63-0047
Edelbrock Corporation • 2700 California St. • Torrance, CA 90503
EFI Tech-Line: [phone], Option 3 • E-Mail: EFIT[email protected]
®
BASIC TROUBLESHOOTING
1. Engine Combinations
a. If you assemble a combination of parts other than stock or the Edelbrock MPFI package called out in our catalog, your vehicle may not
perform properly.
b. Stroker motors are not supported.
c. All engine assemblies must maintain stock compression ratios.
d. A 190- to 195-degree thermostat should be used for optimum mileage, performance and emissions. Thermostats temperatures below
185 degrees should be avoided.
2. Engine Assemblies
a. Heavy duty L19-454, 1987-1990 P/N 88890529
b. Heavy duty L19-454, 1991-1995 P/N 88890530
c. GM P/N 12371054 Retrofit 8.2L (502) Long Block (3564, 3565 MPFI)
3. Fuel Pressure
Fuel pressure must be checked with a fuel pressure gauge only. Do not use a tire pressure gauge.
Test:
a. Turn key to “On” position, but do not start the engine.
b. Fuel pressure should read 42-45 psi depending on your altitude . The higher the altitude the lower the pressure.
c. The system’s fuel pressure should not drop more than 10 psi in 5 minutes, and should maintain residual pressure even after sitting for
24 hours. If pressure drops more than 10 psi, check fuel pump hose and clamps in fuel tank. If the original hose and clamp were used,
replace them with the supplied hose and clamps per the instruction. If fuel pressure still drops off too quickly, contact Edelbrock.
d. With engine running, check fuel pressure. The idle fuel pressure should be between 34-38 psi depending on idle vacuum.
4. Engine Runs On Only One Bank
a. Check injector wiring for correct connections, green to green, blue to blue or red to red (some cases white to red).
b. Check that your original MemCal (blue capped chip) is installed on the supplied green piggyback adapter and chip alignment in the green
piggyback adapter. See “New Computer Chip Installation” section and diagram on page 15.