| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#1
08-13-2021, 07:30 PM
|
|||
|
|||
Almost dyno day...another what’ll it make
I’ve refreshed my 400 and it is about ready for dyno time. I needed to replace the leaky rear main so I decided to swap out the 041 cam, get the heads ported, and upgrade to forged rods. Pistons are TRW flat tops from when I first built it 20 years ago.
Here are the new specs: 400 +.030 #13 heads ported to about 230cfm 9.75:1 compression Factory 1970 intake with the ‘Ruggles mod’ done by me Crower 60243 cam 228/235 @.050 .479/.494 lift Rhoads V-Pro lifters 1.5:1 roller rockers RARE long branch manifolds Pro Systems 4150 785cfm carb It will also be backed up by a Tremec TKX instead of the M20 when it goes back in the car. Any guesses? I’m hoping for around 425HP. |
|
|
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