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So it turns out I have some cranks that are 48.4mm stroke and some that are 50.2mm stroke. The shorter stroke works out to 1000cc when paired with an 81mm bore, so I am guessing those are the SCA cranks. The 50.2mm cranks when paired with an 83.5mm bore gives 1100cc, so those must be the SCC cranks. The rod lengths are the same for both motors (5.434") and the pistons have different compression heights so that they both end up level with the top deck of the block. I am also in the process of making some new timing gears for cam drive to replace those that failed Magnaflux testing. New pistons and new cams are on order so this should get interesting pretty soon. I am also having new cam covers cast up as I do not have enough for all four engines and have not been able to find used ones.
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