Winfield Cams

[Pete]

Originally Posted by flathead47

What application would you use the following Winfield cams in , SU-1R & Su-1A , heavy car or light car.
What modifications are required to the engine to get the most out of each cam.
Are they available for all years of flathead engines.
If you are using either one are you satisfied with how they perform.

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.