The amazing thing about the . . . Poly 318 is how its bare block is functionally identical to the 1967-up 318 LA series small-block. Though cams, pistons, push rods, and intake/exhaust tracts aren’t interchangeable, simply adding oil drain-back lines and grinding push rod clearance grooves allows Poly heads to be used on LA blocks.

And that’s exactly what the Hinkle Performance team did with their Engine Masters Challenge contender. Buck Hinkle says, “When I built this engine, I didn’t have a good Poly block, so I used a regular 318 LA-series)block.”

Click to expand...