Exhaust Diameter
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Supreme Member
Joined: Mar 2009
Posts: 1,402
Likes: 3
From: Sussex County, NJ
Car: 1994 Z28
Engine: 355 LT1
Transmission: T56
Axle/Gears: 3.42
Exhaust Diameter
Hey would a 1 5/8" primary with 2.5" collectors to a 2.5" y pipe support 300rwhp or should I be looking for 2.5" collectors to a 3" y pipe?
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iTrader: (29)
Joined: Sep 1999
Posts: 1,410
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From: Location, Location!
Car: 92 T/A 'vert
Engine: Mild .040 over L98 4 bolt mains
Transmission: Mostly stock 700R4, 2600 Vigilante
Axle/Gears: LS1 3.42
Thread Starter
Supreme Member
Joined: Mar 2009
Posts: 1,402
Likes: 3
From: Sussex County, NJ
Car: 1994 Z28
Engine: 355 LT1
Transmission: T56
Axle/Gears: 3.42
Re: Exhaust Diameter
No cats. I guess I'll have the exhaust shop chop it at the y and do a 3" at the single.
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