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Thanks for the replies so far. It is looking like the -1s have more potential for increased flow. But what about on the engine real world power? What I mean is I don't want to turn the motor 7500 to make power. I know you guys both have built plenty of motors that's why I'm asking.
Thumper Dart, I was very happy with the SR heads but the head that got beat up would probably cost more to fix than what it is worth and they are pretty maxed out as far as porting goes.
Thanks again, Joe

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I understand and that`s why I was asking..........looking to put another 400 stroker together and was just seeing if maybe they were 4 sale but if they`re that jacked up then.............