| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#29
09-17-2022, 11:25 AM
|
||||
|
||||
Paul my info was from McCathys first book and if his compression listed is from the factory then we know that’s always .5 higher then reality so your 7.6 is likely right.
My other info in terms of pistons list part number 499052 for all 455 motors from 75 to 76. 1970 to 74 other then the SD motor used number used 485804 pistons. It’s amazing that we are still uncovering anomalies 46 years down the road! I mean heck, we know of at least one documented case of a 455 having in a 76 car having one 5 series head and one 6 H head.
__________________
I do stuff for reasons. |
| The Following User Says Thank You to 25stevem For This Useful Post: | ||
|
|
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