Winfield Cams

[91A-77B]

Originally Posted by Pete

An original 1953 SU1A was a 280 degree cam that was intended for Bonneville. I ran one at Bonnevile and on the street. Very poor street performance and gas mileage.
Since then many different grinds have come along labeled SU1A. You would have to degree it to tell what you had.
The SU1R had slight less timing.

The more mods you do to the engine, the better most cams will perform. Better breathing = better performance.

The people grinding SU1A's can supply them for any year flathead.
I don't do them because there are so many better grinds.

Pete and JWL, can you let me know your recommendations for my blown engine? (See above). Am I right that a shorter duration is better, with about a 350 lift? Whose cam is the 1007B? Isky? Pete, do you grind this cam?