Wayne, no overdrive needed! However I wouldn't mind one so I could turn the same RPM and be going faster haha.
Yeah, I'm not a fan of overdrives for hot rods that have very much camshaft....why would anyone want their big cam'd motor to be lugging along at 2K while exhaust is running back up the intake tract??
I run a OD trans(518) but on the dyno the other day I wanted to see when the engine would smooth out and at 2000 rpm its running smooth... with my calculations at 75 mph I'd be running 2900-3000 rpm... thats with a .68 OD ratio
