| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#21
03-26-2026, 07:42 PM
|
|||
|
|||
I'd do a compression and leakdown tests on it before making a decision.
|
|
#22
03-26-2026, 11:42 PM
|
|||
|
|||
|
You could use your 350 block, BUT with a 4' stroke crank and get all the tire shredding power you want. It might not be that easy to get those heads to match the power potential. KRE D ports fix that issue.
|
|
#23
03-27-2026, 01:36 AM
|
||||
|
||||
|
Since this car is not a rare car I wouldn't care about any originality stuff. Plus you can keep the original block for resale purposes, if that matters to you.
You could refresh the motor, but with 250K miles on it how much longer is it really going to last? You could put a couple thousand bucks and a bunch of work into it then in a week it could die. And at 250K miles, face it, it is dying. If that level of performance is satisfactory, then rebuild it. If not then get a new motor. For a daily driver kind of vibe, a really mild 455 would give great driving manners and lots of torque.
__________________
70 TA, 467 cid IAII, Edelbrock D-port heads, 9.94:1, Butler HR 236/242 @ .050, 520/540 lift, 112 LSA, Q-jet, TKX (2.87 1st/.81 OD), 3.31 rear https://youtube.com/shorts/gG15nb4FWeo?feature=share Last edited by jhein; 03-27-2026 at 01:41 AM. |
| Reply |
|
|
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.
Linear Mode
