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Thanks I have a buddy building a big block to try and run down my small block. I know he has a 400 block and was just at his engine builder and say his 4.15 crank and just wondered how big of size it could be.

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should be to hard...lol Most guys run the 471-472ish kit. They seem to run real good. Buddy ran mid 9's in an all steel 3300lb+ duster before going to the 500inch low deck, he was in the 9.20's this year. Not bad for an old foot brake car.

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Its funny I never see these big blocks run those numbers at the track. Well at least a street car that is, I do see gutted out ones run some mid nines.

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It might need some nos, naz, laughing gas, HP helper, spray, NITROUS.