The 1972 YH-code 455-cu.in. engine was built and installed prior to the seller buying the car, so internal details and specifications are scant. He did relay that “455” is cast into the sides of the block, the cylinder heads appear to be Pontiac #62s from the late 1960s. A Holley four-barrel carburetor is atop an aftermarket aluminum intake manifold, and headers feed into true dual exhausts, sans catalytic converters. It has a TH350 transmission, and it has been bored 30 over with 375 hp.
For cold starting he says, “pump pedal twice and it starts right up.” The engine, “idles well despite its wicked cam, there are no leaks, and the transmission shifts smoothly.” A standard Safe-T-Track rear axle remains, but the seller is unsure of the gear ratio.