327 Chevy Build

This motor was out of a 1966 Corvette, the original 327ci rated at 300 horsepower. Stripping the block was the first order of business. Engine disassembly on a small-block Chevy is fairly straightforward. Everything taken off was cleaned, tagged, and put in boxes out of the way.

327 Chevy build

The outside of the engine had weathered badly, and was cleaned, scuffed, and painted. To get paint to stick to a cast-iron engine block or cylinder head, the metal must be clean and dry.

read Spray Paint Engine Block And Parts

327 Chevy build

In almost every 327 Chevy engine build, the camshaft is replaced along with the lifters. As with all phases of engine assembly, care must be taken while installing the camshaft.

Camshaft installation small-block Chevy

The heads on the 1966 Corvette were original, casting #3782461. Date codes are J-12-5 and J-20-5 (October 12th and 20th, 1965). These were one of the best flowing factory heads GM had to offer for the small-block. Cylinder Head Rebuilding included disassembly, checking, measuring, cleaning, painting, and re-assembly.

Lapping valves does not take the place of a valve job, but it does confirm whether or not one is needed.

327 Chevy build
1966 Corvette Sting Ray parts

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327 Chevy Engine Before and After

327 Chevy build
327 timing chain cover

Following the head rebuild was the valve-train assembly, which included installing lifters, pushrods, rocker arms, rocker nuts, and rocker balls.