How can i make 700 horse from a 410 stroker

bigfoot said

Or why not just use a little better head? 260 - 265 intake solid roller, 11:1 compression with the properly sized port, a good single plane intake and 1 3/4 or bigger headers at 400 + inches is very streetable, on pump gas and should be bumping up against 650hp if done right.

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Also, not that it necessarily makes it unstreetable but were probably in the low to mid 7000's rpm to make 650 hp with 408-416 cid sbm. For a lot of people that's outside of a streetable rpm making it a street legal race car, 450-550 seems to be the sweet spot for a 408-416 for most.