Great day at the dyno!

All right - lots of great input. Thanks for correcting me - I was passing out bad information.

The car
- 383 0.060" over
- 440 crank turned down to fit in a B block
- stock 383 rods
- JE "pop-up" pistons, 14.1:1 compression
- 906 cylinder heads with oversized valves
- Autolite 85 spark plugs
- roller cam with ~0.57" lift and ~240° duration
- ARP fasteners (heads, rods, mains)
- Factory mag pickup distribution with a CDI module, distributor is NOT locked out
- 727 with ~4500 stall converter
- 4.10 spool with 28x10.5x15 inch slicks

I tuned with Sunoco 110 25 years ago with timing and jetting. The best times I got were with 78 jets in an 850 Holley and 35° timing.


Do you have a graph with torque on it?

Also do you remember you initial timing number and at what rpm the curve is in?

I’m not surprised with those heads at your timing numbers. Just curious about the shape of the curve.