Forsale are a set of GM Performance 454/502 big block Chevy heads. Casting numbers are 12363391. This heads are fresh from the machine shop. They are 110cc with 2.25/1.88 valves. The intake runners are 290. The valvesprings have been upgraded to handle a 670 hydraulic roller camshaft. The valvecovers are a set of tall aluminum valvecovers. These heads will make excellent power for street/strip 396-502 engines. Price is $2800. Call 334-405-8212.
