Quote:
Originally Posted by Skip Fix
Years ago with Lloyd Coulson dynoing his 455 HO about every other pull one of the aluminum Erson rockers would crack!
I've had good luck with the old Norris SS, HS 1.5s and 1.65s and the Crowers-even the 1.8 0.090 offset trunnion BBC on my Pontiacs.
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Interesting, maybe those old Ersons are not all that great. I used to run Erson stuff and I would call their tech guys asking them if they would make the steel pedestal mount rockers for Pontiacs like they had for Chevy's. They said it was in the works, never happened.
I just need a good set of 1.65s for my rocker arm collection and the Ersons will never get run. I got them for free so I thought I would try drilling them out to 7/16".
It does not really work. Very,very hard metal, I had to sharpen each drill in the step process at least 10 times. Even when I finally made it to 7/16 you could not get a 7/16 rocker stud through them. Have to drill past 7/16. With all the coolant, filings that went through them the 2 I did are junk.
Wish I would never had tried it but they were free. Someone could have used them on something like a .500 lift cam with a stud girdle.
I have some Butler aluminum 1.5 rollers, Harland Sharp 1.5 rollers, Norris 1.6 SS rockers, Crower 1.7 aluminum rockers and Crower Endura SS 1.7 Shafts.
Its like I have a Pontiac roller rocker fetish or something.
Guess I am going to have to buy those Comp steel rollers !