roller rockers

[Bill Edgeworth]

Originally Posted by R. Thorne

Thanks, Bill, any particulars (how much more lift and how much shorter pushrods?). Also, were the Harland Sharp rockers the standard ones, diamond series, or HD ones? PM me if you prefer. Thanks, Ron.

My numbers in relation to your situation are totally irrelevant unless everything was exactly the same including seat pressure/spring combo, same stamped steel rockers, head geometry, deck height etc. I’m not sure that Pontiac made these heads all that accurate; I have a couple different sets of 6x heads that are supposedly prepped identically but require different pushrod lengths. That leads me to believe the rocker stud placement is not all that accurate. So what I can tell you is that in my case they produced 0.007 more lift and took almost 1/10” reduction in pushrod length. The Rockers are just the S6001 that’s all you need with your combo, its low lift and low RPM.