LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

52mm tb or 58mm?

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Old

Apr 5, 2004 | 12:04 AM

#1

Hawk350

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Joined: Aug 2001

Posts: 499

From: Grand Island, NY

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

Apr 5, 2004 | 12:44 AM

#2

FireHawk409

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Joined: Dec 2001

Posts: 557

From: New Orleans,Louisiana

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

Apr 5, 2004 | 01:07 AM

#3

Dave88LX

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Joined: Oct 2002

Posts: 2,168

From: AACO, MD

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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