[cobrashoch]

Interesting subject. Have you ever held a bicycle rim with both hands and spinned it? Now try to change directions with it. The reason f1 cars as well as all roadracing cars use smaller clutches is it gives competitive advantages for road racers because they don't resist changing direction as much. Straightline cars like drag cars can use heavier/larger wheels generally along with their larger clutches but only to a certain point. Depends on torque your engine produces and what you are trying to do I guess. Generally smallblocks favor aluminum wheels and smaller clutches though. My drag big block car of presant used a 40lb steel wheel when it was a stick/4speed. Most important thing in my mind though is to use a explosion proof bell-housing. And sometimes they are tough to fit up to hot rod clutch/ flywheel combo's. BTW - aluminum wheels give up heat faster than equivalent steel wheels, and will help clutch fade with road racing cars. So it depends on what you are doing I guess. cobrashock