JW, the Buick piston has a short dish in the crown, so even if the compression height isn't exact, it can be adjusted a little without compromising the integrity of the piston crown. It also has the same size wrist pin as a 235. The 235 crankshaft and connecting rod plus the Buick piston works out almost exactly in relation to the shorter 216 block. A 235 block is 1/8 inch taller than a 216 to compensate for the longer 235 stroke, while using the same rod length and compression height of the piston. 235 standard bore aluminum pistons are a drop-in fit to a 216 bored 60 over, giving a displacement of 224 cubic inches with the 216 stroke.
Jerry

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