I put a warmed up 383 in my 70 Road Runner.
Putting out about 400 HP @ the flywheel. I replaced the flywheel with a new Billet steel unit. The clutch disc and pressure plate were installed new back in 2006, 10.95 dia. stock... I reused this clutch set up but now I am getting slippage during gear changes. I am looking for a good pressure plate and disc (10.95) that will handle the upgrade without breaking the bank. Ram makes a muscle car kit,30% more clamping power over stock, and a power grip, 80% over stock... Any advice on what will work best.