y-pipe
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Junior Member
Joined: Jan 2013
Posts: 23
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Car: 91' Formula WS6 Performance
Engine: 305 TBI
Transmission: Auto
Axle/Gears: -
y-pipe
Is there a y pipe that goes out to a 3 inch in order to get 3 in mufflers??? Or what do I do if i just wanna get a 3" in muffler!!!!?????
Member
Joined: Oct 2010
Posts: 271
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From: colorado
Car: 1987 formula
Engine: 305 tpi
Transmission: t5
Axle/Gears: 3.45
Re: y-pipe
So what your asking is if there is y pipes out there that are 3"out? If so yes they are everywhere. Or are you just wanting to adapt a 3" muffler to the stock exhaust after the rear end?
Thread Starter
Junior Member
Joined: Jan 2013
Posts: 23
Likes: 0
Car: 91' Formula WS6 Performance
Engine: 305 TBI
Transmission: Auto
Axle/Gears: -
Re: y-pipe
currently I have an all stock exhaust system (2.5 in 2.5 out all they way from the heads) so i wanna know, if i can get a 2.5 in 3" out y-pipe... That way i can get a 3 in and 3 out muffler....
Member
Joined: Oct 2010
Posts: 271
Likes: 0
From: colorado
Car: 1987 formula
Engine: 305 tpi
Transmission: t5
Axle/Gears: 3.45
Re: y-pipe
you can however you will also have to replace all the exhaust piping to the muffler in the back or if its just the size of muffler you are wanting and are fine with having the exhaust still at 2.5 til the muffler then go to a auto parts store as they have adapters to change sizes from 2.5 to 3. If you are going to spend all the money to put a new y and 3" all the way back you should get cheap headers and /or dual exhaust.
Junior Member
Joined: Apr 2012
Posts: 75
Likes: 7
From: Kelowna, BC
Car: 1991 R7U Z28 1LE
Engine: LB9
Transmission: T5
Axle/Gears: G92 3.42 Truetrac
Re: y-pipe
There are several nice y pipes out there including the stock L69/LB-9 pipe. But I believe you have to use the larger GM cast iron manifolds in combination with them. I did. MAC has a good looking one haven't tried it...cheers,
I'm a former header user!....lol
I'm a former header user!....lol
Junior Member
Joined: Apr 2012
Posts: 75
Likes: 7
From: Kelowna, BC
Car: 1991 R7U Z28 1LE
Engine: LB9
Transmission: T5
Axle/Gears: G92 3.42 Truetrac
Re: y-pipe
Sorry, the 3" outlet ones above I mentioned go into a 3" highflow cat and then to your choice of 3" system after that..
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