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WARNING: Do not remove radiator cap or radiator hose if
engine is hot.
3. Drain radiator coolant, move fan shroud back and remove fan
and spacer from water pump. On air conditioned vehicles,
remove bolt, lower idler pulley and compressor-to- water pump
mount. Disconnect hoses and brackets. Most vehicles will
require radiator removal prior to cam removal. Remove water
pump.
4. Disconnect all linkage from carburetor such as throttle, throttle
springs, transmission, cruise control and automatic choke.
5. Tag and remove vacuum lines.
6. Remove valve covers.
7. Remove distributor cap and wires, rotate engine until rotor
points towards number 1 terminal in cap and pointer on front
cover is on Top Dead Center (TDC) and remove distributor.
Note the approximate position of the vacuum advance canister
in relation to the manifold to assist in getting the distributor
properly located during re-installation.
8. Remove carburetor and intake manifold. Remove fuel pump.
9. Remove rocker arms and pushrods.
10.Remove hydraulic valve lifters.
11.Remove crankshaft pulley and, using a suitable puller, crank-
shaft dampener.
12.Loosen oil pan and remove front cover.
NOTE: The front cover oil seal should be replaced before the
front cover is re-installed.
13.Rotate engine until timing marks are aligned as shown in Figure
2.
14.Remove cam sprocket bolts. Slide sprocket and timing chain
forward to remove.
15.Remove camshaft. Using appropriate gear puller, remove crank
sprocket.
• VALVE SPRINGS
CAUTION: WARNINGS ABOUT YOUR WARRANTY
In order for this Performer RPM cam and lifter kit to be cov-
ered under ANY WARRANTY you MUST use the correct
Edelbrock Sure Seat Valve Springs or equivalent. Failure to
install new Edelbrock valve springs or equivalent with your
new Performer RPM 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 #5757. Do not use dual valve springs with this
camshaft. Special H.P. retainers may be necessary with your
installation for proper spring height. Do not use rotator type
valve springs or retainers for this application.
• LIFTERS
1. New lifters must be used with new camshaft. Use only the high
rev lifters supplied with this kit.
2. Check to be sure that all lifters fit freely in the lifter bores.
• INSTALLATION INSTRUCTIONS
1. Coat cam lobes and bottoms of each lifter with MoS2 lube
(supplied) to prevent cam lobe and lifter wear from occurring
during initial 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 #7812. Do not use late model tim-
ing chain & gear sets that are designed in a retarded position
and are not recommended for this camshaft installation.
Edelbrock Timing Sets feature three keyways for specific tim-
ing selection. Use locking compound material on the bolt
threads holding timing gear to cam. Torque to factory recom-
mendations specified in motor repair manual.
Install camshaft with timing marks lined up as recommended
by factory specifications. See Figure 2.
When using Performer-Plus Timing Chain and Gear Sets (7812
series) with Edelbrock cam and lifter kits, straight up timing
alignment is achieved. If any other timing gear set is used, it is
necessary 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 recommended for use with Edelbrock camshafts.
• INSTALLING PUSHRODS AND ROCKER ARMS
High performance pushrods and rocker arms and studs are rec-
ommended for this installation.
After the cam is installed and timed correctly (see Figure 2), 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 adjusting nut on intake
rocker arm and adjust to zero clearance between rocker arm
and valve tip. From this point turn adjusting nut down (clock-
wise) 1/4 turn more for final adjustment.
2. Turn the engine over again until the intake lifter just stops
coming down. At this point install adjusting nut on exhaust
rocker arm and adjust to zero clearance between rocker arm
and valve tip. From this point turn adjusting nut down (clock-
wise) 1/4 turn more for final adjustment.
3. The above procedure assures correct hydraulic lifter preload.
Repeat this procedure for each of the other seven cylinders.
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 and torque to 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 wear out your
camshaft prematurely. This is especially true when rebuilding
your engine and a high performance oil system is used, which
generates a heavier load on the camshaft gear system.
Edelbrock camshafts are designed to use OEM-type gears only.
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
terminal in the cap, and with the vacuum advance canister in
its original 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 vacu-
um and electrical connections.
5. Re-install air conditioner, if so equipped.
6. Refill radiator with coolant and re-connect battery.
7. Double check all connections, fuel lines, etc. before starting
engine.