400/426 Stroker. Ever heard of one?

rumblefish360 said

I think ….. he assembled the parts himself. I don’t think this is off the shelf.

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Yep. Crank work on a stock 383 steel crank, long big block Chevy rods, and (apparently) some off the shelf 440 stroker pistons set up for bbc pins. The trick is finding workable pistons, and then drilling the block to fit.