Quote Originally Posted by raspy2point2 View Post
why was the small valve rule changed?
The cars are all 1965's and they wanted them to be period valve sizes, maybe it's an appendix K thing? They outlawed the Duel motorsport exhaust for last year too (which I also now have in stock) ) The funny thing is, don't think for one minute they make less power than the big valve engines. That's race engineering for you.