7.1 or longer What size are the crankshaft rod journals? If BB Chevy there are a lot of choices on brand, style and materailas for us Mopr engine lovers The longer the rod the lighter weight the pistons will be, the lighter the piston the better the motor will rev up, and slow down

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)