Quote:

as is obvious that they spent a considerable amount of time messing with the backsides of those valves.






i think they did it to get back some of the low lift flow they lost by making the bowls as big as they did.
the way the heads were when i got them, there was basically no bottom cut under the 45* seat angle.
it was pretty much a 45, and then into the bowl.
that usually kills the low lift flow....but many times reworking the backside of the valve the way they did will get some of it back.


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