Well I'm guessing Only That you are useing the 250 head Because you didn't say if this was a 194 Or the 250.But anyway For what little you upped the compression with the 307
pistons I'd say you are around the 200hp 225 at Very best. Seeing that most stock 250s were depending on the yr around 155hp tops.
Hope this helps.}[oooooo]
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NovaMan/Twisted6/Larry
God doesn't like ugly.
