Edelbrock 68512 User manual

©2006 Edelbrock Corporation
Rev. 5/06 - DA/mc Catalog #68512, #68513
Brochure #63-68512
Page 1 of 2
SHORTY HEADER
for 1987-1991 Dodge Dakota Truck (All),
3.9L V6 Engine
Catalog #68512, #68513
INSTALLATION INSTRUCTIONS
PLEASE study these instructions carefully before installing your new Shorty Header. If you have any questions, please call
our Technical Hotline at: 1-800-416-8628 from 7:00 am - 5:00 pm, Monday-Friday, Pacific Standard Time or e-mail
us at [email protected]. Please fill out and mail your warranty card.
HEADERS: These components are designed to improve the exhaust efficiency of the Dodge 3.9 Litre V6 engine with E.F.I.
(Electronic Fuel Injection). These tubular manifolds are a direct replacement for the factory exhaust manifolds. A
performance gain can be expected by the installation of this system. This system does not require welding for installation
and retains all O.E.M. emissions equipment.
SUGGESTED TOOLS FOR INSTALLATION:
❑3/8" ratchet socket set with extensions and sockets ❑Jackstands, screwdrivers, pliers, crescent wrench, etc.
❑Combination set of open-end wrenches ❑Liquid penetrant, anti-seize compound
SPECIAL NOTICE: This Edelbrock part has received an Executive Order (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
equipment certification, we have included a silver fan shroud decal to help testing personnel 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.
WARNING: The use of "Thermal Wrap" or any aftermarket coating process will void the warranty on your
headers. Those products can cause excessive heat and moisture buildup resulting in corrosion and early
failure of the system.
NOTE: High temperature spark plug wires and boots are recommended to withstand heat from Headers.
IMPORTANT NOTE:
Proper installation is the responsibility of the installer. Improper installation will void warranty and may
result in poor performance and engine or vehicle damage.
HARDWARE SUPPLIED
Catalog #68512 (Ceramic-Coated), #68513 (Ti-Tech Coated)
Qty.Description Qty.Description
❑1 #25-9275 Header left side (#68512) ❑2 Hex nuts; 5/16” - 24
❑1 #25-9276 Header right side (#68512) ❑4 Hex nuts; 3/8” - 16 (plated)
❑1 #25-9020 Header left side (#68513) ❑2 Hex nuts; 10-32
❑1 #25-9021 Header right side (#68513) ❑1 Band clamp; 1-1/2”
❑4 Hex bolts; 3/8” - 16 x 2” ❑2 Star washers; 3/16” (internal)
❑2 Manifold gaskets ❑1 Round head screw; 10-32 x 1-3/4”
❑1 Heat stove plate ❑ 2 Studs; 5/16” x 1-1/2”
❑1 Hex cap screw; 10-32 x 1/2” ❑2 Lockwashers; 5/16”
❑1 Flat washer; 3/16” ❑4 Lockwashers; 3/8”

©2006 Edelbrock Corporation
Rev. 5/06 - DA/mc Catalog #68512, #68513
Brochure #63-68512
Page 2 of 2
Edelbrock Corporation, 2700 California St., Torrance, CA 90503
Tech Line: [phone]
Office: [phone]
E-Mail: [email protected]
• DISASSEMBLY
1. Disconnect negative cable from battery.
2. Use penetrating oil on all nuts and bolts to be
removed. This will prevent the possibility of
broken or stripped nuts and bolts.
3. Remove O2 sensor (1987 only) being careful
not to rupture or destroy the unit. WARNING:
Do not clean this unit in any solvent and do not
damage wire.
4. Unbolt air injection tubes from both manifolds.
5. Unbolt exhaust pipes from both exhaust
manifolds.
6. Unbolt and remove both exhaust manifolds.
7. Install 5/16"x 1-1/8" studs (supplied) in second
hole on left side and third hole on right side
(where OEM bolts were located on exhaust
manifolds).
8. Clean and inspect all sealing surfaces before
assembly.
• ASSEMBLY - LEFT SIDE
1. Place manifold port gasket over studs (be sure
surface is clean).
2. Install TES manifold over studs, install OEM cup
washers, nuts and additional nut provided in
kit, then tighten evenly.
3. Bolt air injection tube to manifold using OEM
gasket (do not tighten at this time).
4. Bolt exhaust pipe to TES manifold using 3/8" x
2" bolts, nuts, and lock washers provided in kit
(do not tighten at this time).
5. Install O2 sensor using anti-seize on threads
and torque to 30 ft./lbs.
• ASSEMBLY - RIGHT SIDE
1. Place heat stove plate on top of TES manifold,
insert 1-3/4" long round head screw through
plate and down between front primary tubes
adjacent to port flange. Place 3/16" flat
washer and lock washer over screw, then start
nut (do not tighten at this time).
2. Place band clamp over rear primary tube at the
front and attach to heat stove using 3/16" bolt,
lock washer, and nut provided in kit. Secure
heat stove plate at this time.
3. Rubber mud guard attached to fender well
must be trimmed to clear TES manifold tubes.
4. Remove the manifold and trim the necessary
material from the mud guard.
5. Place manifold port gasket over studs (be sure
surface is clean).
6. Install TES manifold over studs; install OEM cup
washers, nuts, and additional nut provided in
kit, then tighten evenly.
7. Bolt air injection tube to manifold using OEM
gasket and tighten both sides at this time.
8. Bolt exhaust pipe to manifold using 3/8" x 2"
bolts, nuts, and lock washers provided in kit.
9. Tighten both right and left side exhaust pipe
connections.
10. Connect negative cable to battery.
11. Be sure that all brake and fuel lines have
adequate clearance.
12 Start engine and bring up to normal running
temperature, then turn off and let cool.
13. When cool, re-tighten all manifold nuts and
bolts.
INSTALLATION INSTRUCTIONS