[NeighborsComplaint]

Originally Posted by steve25

I must be honest by saying that I am not impressed!

Here’s a dyno test of a 364 cid SBC with Trickflow heads that I ported up to 260 cfm.
The motor had 10.25 compression and a Crower cam.

Two flat tappet hydro cams where tested .
The final cam as used in this test made 9 more ft lbs of torque and 17 more hp.
The cam specs where 220/226
Cam Lift .462” .470”
1.6 rockers where used and the cam was advanced from 112 to 109.
A 700 Holley was used on top a Victor jr manifold that I had blended the plenum on and gasket matched,

What does this have to do with a 400 CID Pontiac? Everyone knows it's easier to pull big numbers out of a SBC.

[pastry_chef]

Originally Posted by NeighborsComplaint

it's easier to pull big numbers out of a SBC.

I agree.
Not hard to make north of 500HP from a street-able 400 SBC.
It would be interesting to measure how much power the heavier rotating assembly of the Pontiac costs.

[slowbird]

Originally Posted by pastry_chef

It would be interesting to measure how much power the heavier rotating assembly of the Pontiac costs.

Completely depends how the engine is pulled if it shows anything. The slower the rpm pull rate the less rotating weight effects things

[Scott Stoneburg]

Good job on your build. Dont pay any attention to some of the negative responses. Some people always have negative comments. Seems to me like they must be unhappy with their own stuff so they say bad things about everyone else's.

I say to you, Good Job!