Nicks Garage 383 build
Here’s my side of the argument……..
I wasn’t looking for a “stock” engine……. So I hotrodded one a bit.
This is the same short block I bracket raced for 3 years that made over 480hp.
I replaced the unported 906’s with some bowl blended later model castings(1-346, 1-452…… I used up some orphans)that flowed like mid-250’s, milled to achieve 9.8cr with a .040 gasket.
Same RPM intake as before, Holley 750(4779) carb, new smaller exhaust manifold friendly SFT cam, and running on pump 93 with exhaust manifolds that had a few feet of 2.5” pipe on them, no mufflers.
This is the only sheet I have handy, and this test was with a 14x4 air filter installed.
Afterward, I felt the cam was a bit too long, and too wide…… which is partially why the tq peaks as high up as it did.
Idled like a pussy cat though.
Cranking pressure was only 155psi(same as what my old 448 was that ran 10’s).
The 480hp configuration of this engine cranked almost 200.
Here’s my side of the argument……..
I wasn’t looking for a “stock” engine……. So I hotrodded one a bit.
This is the same short block I bracket raced for 3 years that made over 480hp.
I replaced the unported 906’s with some bowl blended later model castings(1-346, 1-452…… I used up some orphans)that flowed like mid-250’s, milled to achieve 9.8cr with a .040 gasket.
Same RPM intake as before, Holley 750(4779) carb, new smaller exhaust manifold friendly SFT cam, and running on pump 93 with exhaust manifolds that had a few feet of 2.5” pipe on them, no mufflers.
This is the only sheet I have handy, and this test was with a 14x4 air filter installed.
Afterward, I felt the cam was a bit too long, and too wide…… which is partially why the tq peaks as high up as it did.
Idled like a pussy cat though.
Cranking pressure was only 155psi(same as what my old 448 was that ran 10’s).
The 480hp configuration of this engine cranked almost 200.