What year block?
Don't underestimate the strength of the OEM 2-bolt main, however.
You can get 450whp on ported stock castings, but 500whp is going to take quite a bit more.
i have looked into the dart heads but im thinking they will come into play on round two.
Stock castings ported can make great numbers for what they are..Stock not so much.

On original topic though, the stock 2 bolt has made tremendous power time and time again. If you're that worried about it, get some splayed 4 bolt caps and have the shop machine em.
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Stock castings ported can make great numbers for what they are..Stock not so much.

On original topic though, the stock 2 bolt has made tremendous power time and time again. If you're that worried about it, get some splayed 4 bolt caps and have the shop machine em.

