[grandam1979]

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,

He put a engine together with out of the box parts compared to your hand ported heads and intake and made 17 less hp I think he did pretty good and with some fine tuning could have beat the numbers you came up with. They never even changed timing that could have been the difference right there. JM2¢