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  1. S4M3350

    Hs40 block overbore to fit Hs50?

    Have an all there Hs40 that came off my MTD Columbia Trailflite/ss400 and i have a crank, rod, and piston from an Hs50, ontop of all of that i have a pretty capable performance engine shop (more for Ls/Bbf). Now i am wondering if its even remotely possible to bore this Hs40 block to fit this...
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