[flathead47]

Pete ....... I guess copies of copies have created different grinds that are labeled SU1A'S but have become different than the original grind , so the original grind is not a good street cam.
Would the SU1R be a good street cam.
What grind would you recommend for good street performance & gas mileage for a 8BA motor in a 36 5W coupe & a 47 convertible with the 59 motor still in it.