so I fired up the 431 and it seems to run hot, Im not sure on the set up for the MSD distributor as far as springs and bushing. Currently I a heavy and light silver and the blue bushing. I have a champion radiator with the shroud and 10" fans.
The cam is a voodoo .513 hydraulic lifters. RPM intake with a 800 AVS carb. and StreetFire box and wires+Chamions RC12Y.....stock Magnum exhaust manifolds.