Got it.

Well then, something doesn’t quite add up.

The Moroso chart shows 800hp@3275lbs to be capable of 9.18@147.

I figure the typical bracket car should run within about 10% of the Moroso chart.
At that it would be 720hp, which shows 9.48@142.

Hopefully you find the smoking gun for the missing performance.

What kind of HP was Tilburg expecting it to make?

68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads