Building a Better Buick, Part I
The seats were machined to the correct angle with this machine, then finished off with stones to get a multiple-angle high-performance seat. In this photo, you can see how close the valves are, so it's almost impossible to increase the valve size of the engine. Buick uses a 1.94-inch intake valve and a 1.50-inch exhaust valve. Sound familiar, Chevy fans?
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