
VALVE SPRINGS
CAUTION: WARNINGS ABOUT YOUR WARRANTY
In order for this Performer-Plus cam and lifter kit to be covered
under ANY WARRANTY you MUST use the correct Edelbrock Sure
Seat Valve Springs or original equipment springs. Failure to install
new Edelbrock valve springs or original specification springs with
your new Performer-Plus cam could cause the cam lobes to wear
excessively and could cause additional engine damage.
1.This camshaft is designed to function with Edelbrock Sure Seat
valve springs #5872 (standard) or #5972 (for use with valve rota-
tors). Do not use dual valve springs with this camshaft.
2.Check and set spring height to factory specifications for your year
and model. If using Edelbrock #5872, set both intake and exhaust
to 1.820"; for #5972, set exhaust to 1.680".
NOTE: Due to the
various settings through the years, we advise checking service
manual for correct spring height setting for your vehicle.
3.You may use stock retainers and/or valve rotators with Edelbrock
valve springs, or for non-rotator engines, you may install
Edelbrock Valve Spring Retainers #9724 with stock valve locks.
LIFTERS
1.New lifters mustbe used with new camshaft. Use only the lifters
supplied with this kit.
2.Check to be sure that all lifters fit freely in the lifter bores and that
lifter bores were not machined for oversized lifters.
INSTALLATION INSTRUCTIONS
1.Coat cam lobes and bottoms of each lifter with MoS2 lube (sup-
plied) to prevent cam lobe and lifter wear from occurring during ini-
tial start-up.
2.Install new camshaft with new sprockets, timing chain and lifters.
CAUTION: Use Edelbrock Performer-Plus True Rolling Timing
Chain and Gear Set #7821. Do not use late model timing chain and
gear sets that are designed in a retarded position and are not rec-
ommended for this camshaft installation. Edelbrock Timing Sets
feature three keyways for specific timing selection. Use locking
compound material on the bolt threads holding timing gear to cam.
Torque to factory recommendations specified in motor repair manu-
al.
Install camshaft with timing marks lined up as recommended by
factory specifications. See Figure 1.
When using Performer-Plus Timing Chain and Gear Sets (7800
series) with Edelbrock cam and lifter kits, straight up timing align-
ment is achieved. If any other timing gear set is used, it is neces-
sary to check cam position for correct timing alignment. This
requires indexing the camshaft with a degree wheel to verify timing
alignment. O.E.M. or non-Edelbrock timing gear sets are not recom-
mended for use with Edelbrock camshafts.
INSTALLING PUSHRODS AND ROCKER ARMS
After the cam is installed and timed correctly (see Figure 1), it will
be necessary to check each pushrod for correct lifter pre-load.
VALVE ADJUSTMENT
1.Turn the engine over until the No. 1 cylinder exhaust lifter starts to
move up. At this point install pushrod and adjusting nut on intake
rocker arm and adjust to zero clearance between rocker arm and
valve tip. For engines with non-adjustable rocker arms, continue to
tighten the adjusting nut until it bottoms out. If this adjustment is
less than one-half turn, you will need to purchase 0.060" longer
pushrods from your Ford dealer.
2.Turn the engine over again until the intake lifter just stops coming
down. At this point install pushrod and adjusting nut on exhaust
rocker arm and repeat the same procedure as above.
3.The above procedure assures correct hydraulic lifter pre-load.
Repeat this procedure for each of the other seven cylinders. For
non-adjustable rockers, torque rocker arm nuts to 20-25 ft./lbs.
4.Re-install front cover, fuel pump, water pump, and oil pan using
new gaskets.
5.Install intake manifold using new intake gasket set and torque
manifold bolts to 25 ft./lbs.
6.Install crankshaft dampener & torque to factory spec. (60 ft./lbs.).
INSTALLING DISTRIBUTOR AND TIMING ENGINE
NOTE: Before installing your distributor, check the gear drive on
the distributor and oil pump for any signs of wear. If worn, be sure
to replace with new or you may prematurely wear out your
camshaft. Edelbrock camshafts are designed to use OEM-type
gears and oil pumps only. Do not use high volume, high pressure oil
pumps.
1.Turn the engine over in the direction of rotation until the No. 1
intake valve closes and continue until the pointer on the front cover
is approximately 5 degrees BTDC.
2.Re-install the distributor with the rotor pointing towards No. 1 ter-
minal in the cap, and with the vacuum advance canister in its origi-
nal position.
3.Lightly tighten the hold-down clamp so that the distributor can still
be turned to determine final setting using a timing light with the
engine running.
4.Replace valve covers, carburetor linkage and remaining vacuum
and electrical connections.
5.Re-install air conditioner, if so equipped.
6.Re-install radiator, fan shroud, and belts (if removed), fill radiator
with coolant and re-connect battery.
7.Double check all connections, fuel lines, etc. before starting engine.
CAMSHAFT/LIFTER RUN-IN
CAUTION: Change the engine oil and filter before start-up and
again after initial break-in.
Do not allow the engine to run
under 2000 rpm for the 1/2 hour. Vary engine speed between
2000 & 2500 rpm. Slow idle speeds will result in severe cam &
lifter wear.
1.Start the engine and bring to break-in rpm.
IMPORTANT INSTRUCTIONS
AFFECTING YOUR WARRANTY
☞CAM LOBE WEAR- Cam lobe wear is almost non-existent
unless mismatched parts are used or installation of the cam and
lifters is done improperly. Most cam damage is caused by the tim-
ing gear coming loose due to improper torque on bolt. Bolts holding
gear to camshaft should be torqued carefully and a locking com-
pound applied to threads of bolts.
☞CAUTION: Use Edelbrock Performer-Plus Timing Chain and Gear
Set #7821. Do not use late model timing chain and gear sets that
are designed for emission-controlled engines. These timing sets are
machined in a retarded position and are not recommended for this
camshaft installation. Edelbrock Timing Sets feature three keyways
Brochure #63-0082
© 2002 Edelbrock Corporation
Rev. 03/02