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it's a 406, solid roller cam (253in 265ex @.050" .612 lift) street car. i'm aiming for around 550-575 horsepower or more, & it will be hard to on pump gas i know. i think i can get about 530 horsepower out of it with the dart heads, but i want more. the dart heads just don't seem to have the flow #'s that the afr heads have. i know the afr heads will (should) make more power, but i wonder how much more? every build-up i've seen with afr heads have been bad as hell, even with a 190cc runner they still crank out around 500 horse's.
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