Building a 383 help

You already have 4.10 gears. A HP 383 will make plenty of power on the street. Do you have any other parts? I'd get a set of 73 up heads, clean up the bowls under the valves. Get some oversized stainless valves from Mancini Racing. Bore and hone it with the mains torqued, and torque plates installed with the head gasket you are going to run. Use good rings, a true roller timing chain and call Jim at Racer Brown and get a cam and valve springs for the street. Your biggest problem will be hooking up with a HP 383. No special parts required. I drove a 68 383 fastback for years as a daily driver, original exhaust manifolds and all.