Inliners International Forums General Discussion Ford Best 5-speed tranny for 300?

300s are internally balanced. 302s run external balance (i.e. weights on the damper and the flywheel/flexplate.) You would either need a flexplate for a 300 or to significantly alter and re-balance the 302 flexplate. The torque converter for a 302 is probably going to have a somewhat higher stall speed than the one for a 300 if that matters to you.