What do I need to do to build a 1000hp turbo small block

doogievlg said

Unless your 408 combo is a Ritter block or a race block I’m afraid not.

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That would definitely be a plus but not necessarily a requirement. We’ve done 1400ish fwhp on 360cube sbf’s and I think the stock 360 block would be better than that ford. We’re only talking 900-1000fwhp here.