| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#2
10-29-2025, 12:19 AM
|
||||
|
||||
I believe your stock grind was a 067;
This grind is virtually unobtainable. If you stick with an OE grind, there’s no messing around or worrying about anything. As I have understood it a 068 should work fine - that is what the 70-RAIII & 71/72-455HO all used. I personally would not step down to a 066 grind. Others here will probably have better first hand knowledge or opinions than me. If your cam looks good, and you have the time you could try measuring it.
__________________
1970 Formula 400 Carousel Red paint on Black standard interior A no-engine, no-transmission, no-wheel option car. Quite likely one of few '70 Muncie three speed Formula 400's left. 1991 Grand Am: 14.4 @ 93.7mph (DA corrected) (retired DD, stock appearing) 2009 Cobalt SS: 13.9 @ 103mph (current DD; makes something north of 300hp & 350ft/lbs) |
| Thread Tools | |
| Display Modes | |
|
|
The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.
Threaded Mode