Restarting or advancing cam timing can alter the Rpm range where the cam likes to operate. Advancing lowers rpm range, retarding raises it. The e303 cam's advertised rpm range is with the cam installed straight up, or dot to dot as you have it. Advancing or retarding the cam requires a timing chain set with extra marks to allow accurate advancing or retarding of the cam timing.
Answered by scott s. from hewitt | Comment 0 0
The E Cam can be used with stock heads and pistons. However, you do need to upgrade to a 1.7 Roller Rocker and upgrade your valve springs to accommodate the increased lift.
Also, you shouldn't have to do any modifications to the piston, however you should always check your piston-to-valve clearance!
Answered by Tim R. from Hewitt | 4 Comments 0 0
Besides the obligatory gaskets, oil, and coolant, I'd recommend changing out the valve springs, as the stock valve springs were barely adequate for the stock cam when they were new. TFS-2500100 is a great spring kit for stock or cast iron heads. A new set of roller lifters wouldn't hurt, but aren't required if yours still appear in good working order. also a set of roller rockers would really round out the upgrade.
Answered by Jonathan M. from Hewitt | 1 Comments 0 0
That firing order is for a non roller motor. The E cam is for roller motors with the firing order of 1-3-7-2-6-5-4-8. You will need to get a hydraulic non-roller camshaft for the correct firing order for it to work on that motor.
Answered by BRYAN M. from TROY | Comment 0 0
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