Quote:
Originally Posted by Aubrey N Bruneau
Why are so many against this ?
There's no real performance advantage ( ok... 3 HP )
I for one, welcome this with open valve covers.
My engine will damage a stamped steel rocker on the intake side, about every 4 runs.
Last year, I put on a set of rollers, with intention of going to Edmonton ( IHRA )
Engine is absolutely trouble free since then.
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Aubrey, if you're damaging a stamped rocker every 3-4 runs, you have a serious problem, and the roller rockers are merely a band aid. How many passes do you have since the roller rockers were installed?
Do you have an old Chevrolet Power Manual? If you do, go back and read the section on valvetrain for the big block Chevy, since your valvetrain is very similar. Pay particular attention to the part about roller rockers and 7/16" rocker studs with high valvespring pressures.
I think we figured up we had about 500 passes on our original rockers when we replaced them. They
did not have an insert welded in them, I polished the burr off of the pierced hole over the pushrod cup. We eventually wore the rockers out, the tips, balls and ball seats were just worn out. We ran near 550# open pressure, and turned 7700 or more in the lights every pass.