Who was the first 10 sec. stick Stocker and

[bsa633]

Originally Posted by Chuck Norton

There were a few differences. I don't remember all of them but I'm sure that someone does. Among the ones that I recall:

1. Tires - 7" in 1971 v. 9" in 1978
2. Pistons - Unrestricted on weight and valve relief in 1971 v. factory piston in 1978
3. Allowable overbore - .060 in 1971 v. .030? in 1978 (things were changing pretty fast in '78. I'm not sure on the overbore rule at that point in time.

What else am I forgetting?

What about weight brakes and cars that were allowed..
unrestricted on valve relief? in that case what about cams?