A friend of mine bought a used motor Monday, had it on the dyno Wednesday, it’s in the car at the track today.
Motor dynoed at 728hp.

There is also a slight head wind(8-9mph) at the track today.

The Moroso chart shows 665hp for the speed(144), which is within 10%(8.7%) of the dyno numbers.
It shows 695hp for the ET (9.21) which is within 5%.

Wallace shows:

069D93A6-16FD-4212-A204-2DA6E6FF53FC.png
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads