SLP y-pipe size

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07-23-2004, 11:17 AM

KagA152

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Car: 1991 Trans Am

Engine: LQ4

Transmission: T-56

Axle/Gears: 3.70

SLP y-pipe size

I need to know the size of the y-pipe where its 3" to the cat. Is it 3" ID or 3" OD?

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07-23-2004, 11:28 AM

D's89IROCZ

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Car: 1989 IROC-Z

Engine: 5.7L EFI LTR setup

Transmission: T-5 World Class

once I get this dam digy cam working again ..... ( today ) I will post some pics of it with a measureing tape ..... I got a set here sitting my kitchen

I think its 3" outside .....but I may be measureing it wrong

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07-25-2004, 01:58 AM

25THRSS

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3 inch OD, which is pretty much standard for almost all exhaust companies

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07-25-2004, 12:25 PM

D's89IROCZ

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Car: 1989 IROC-Z

Engine: 5.7L EFI LTR setup

Transmission: T-5 World Class

here are pics of it

y pipe pics

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