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52mm tb or 58mm?

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Old 04-05-2004, 12:04 AM
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52mm tb or 58mm?
Which tb is best for a heads and cam app? 58mm 0r the 52mm. Correct me if I am wrong, but the 52mm is good up to 500hp correct?
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Old 04-05-2004, 12:44 AM
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If you got a stock displacement with heads and cam, then a 52 should be enough. I cant find it, but there was a calculation to find out what size you would need.
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Old 04-05-2004, 01:07 AM
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Goes something like:

Cubic Inches x RPM / 3456

383 spinning 6000 needs 664 CFM, but gotta add more on or something.

Do a search on THROTTLE BODY, the 12 pages of results should help you.
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