• 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 equivalent. Failure to install new Edelbrock valve springs or equivalent 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 stock or Edelbrock Sure Seat valve springs #5857 or #5957. Do not use high pressure valve springs
with this camshaft. Edelbrock retainers #9724 (non-rotator) may be necessary with your installation for proper spring height.
• 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. 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 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 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.
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.
©2008 Edelbrock Corp
Brochure #63-2157
Rev. 9/08 - AJ/mc
