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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, crankshaft
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 covered 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 timing chain & gear sets
that are designed in a retarded position and are not recommended for
this camshaft installation.
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 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)
©2009 Edelbrock Corp
Part #7157
Edelbrock Timing Sets feature three
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
recommended 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 preload.
• 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 (clockwise) 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 (clockwise) 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 vacuum 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.
• 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 first hour. Vary engine speed between 2000 and 3000 rpm.
Slow idle speeds may result in severe cam and lifter wear.
1. Start the engine and bring to break-in rpm.
Brochure #63-7157
Rev 5/09 - AJ/mc
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