A couple years ago we put a Howard’s 720141-12 in a fresh 440-6 rebuild.

It worked well enough but there might have been a few hp left on the table.
Made like 410hp with headers(manifolds in the car).


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