273 Stroker for ***** and giggles

Need some 1.45 inch or so deck height pistons. Probably could do some custom chevy 18 degree pistons and 6.125 inch or longer nascar type rods. And since we're already unfeasible, then you could go for broke and run one of the available 4.125 inch cranks with the 2.0 inch journals for even more cubes. LS style 15 degree pistons could almost work but the smallest bore is 3.78 inches, and I don't think your block is going to stand that.