Most every aftermarket head manufacturer will have flow numbers on their website. Here are a couple private sites with some flow numbers also.....
http://users.erols.com/srweiss/tablehdc.htm
http://purplesagetradingpost.com/sum...fo/heads1.html
As for what head to use on a SB400, that depends on a lot of things. A couple being, how the rest of the engine is built and what is the intended useage of this engine.
Quote:
Originally Posted by royo
Does anyone have some flow numbers any of these heads Also what is the best vortec head out there for street 400ci plus?
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