| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#11
12-07-2025, 12:43 AM
|
|||
|
|||
Thanks Paul.
For some reason I thought Jim had tested Edelbrock heads. I only had one "455" combo with Edelbrock heads to mention here as an example..... 4.210 stroke / 462 CID XE solid roller with 254 at .050" intake duration Edelbrock heads / 313 cfm at .600" lift Performer RPM intake / HP 950 carb 2-inch headers Depending on the dyno sheet at 3200 rpm it was at or approaching 500 ft.lbs. torque. Peak torque was at 4400 rpm with 589.1 ft. lbs. and carried over 500 ft. lbs all the way to where it made peak power at 5800 rpm (580 hp). The compression was only 9.7 so pump gas was certainly not an issue and it was driven on the street with NO issues being sluggish off idle or at lower rpm. Best performance with that combo was 10.88 at 124.28 mph .
__________________
'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 ) Old information here: http://www.hotrod.com/articles/0712p...tiac-trans-am/ Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine) Best time 5.13 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension https://www.youtube.com/watch?v=qDoJnIP3HgE |
|
|
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