L98 High Flow Y-Pipe
#1
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Car: 1984 LG4 Camaro
Engine: 350 Roller Motor
Transmission: Level 10 700R4
Axle/Gears: Strange 12 bolt 3.42
L98 High Flow Y-Pipe
Picked up a L98 GTA a few weeks ago and was looking into bolt-ons and decided that headers are not in the cards, but want to change out the y-pipe and get a Mufflex 3.5" cat back (like on my Camaro).
Previously I had used Gale Banks Y-Pipes on my 2 LG4 cars, worked great - but they don't make them anymore. It was an easy fix to mate LG4 manifolds to a 3" cat without headers...
So the question is, how is the fit of the Magnaflow 16450 and the Mac 48692 y-pipes on a single 3" cat L98 motored car? Also are they true 2.5" pipes into the 3" merge before the cat? Are the Magnaflows actually made out of SS and the Mac out of aluminized steel? Wondering about the gains anyone has gotten too.
Previously I had used Gale Banks Y-Pipes on my 2 LG4 cars, worked great - but they don't make them anymore. It was an easy fix to mate LG4 manifolds to a 3" cat without headers...
So the question is, how is the fit of the Magnaflow 16450 and the Mac 48692 y-pipes on a single 3" cat L98 motored car? Also are they true 2.5" pipes into the 3" merge before the cat? Are the Magnaflows actually made out of SS and the Mac out of aluminized steel? Wondering about the gains anyone has gotten too.
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Car: 92 T/A 'vert
Engine: Mild .040 over L98 4 bolt mains
Transmission: Mostly stock 700R4, 2600 Vigilante
Axle/Gears: LS1 3.42
Re: L98 High Flow Y-Pipe
http://www.hawksthirdgenparts.com/pr...ifolds%29.html
Mac Performance has, (had), a regular steel one but their site is fubar'ed at the moment.
Mac Performance has, (had), a regular steel one but their site is fubar'ed at the moment.
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Car: 1984 LG4 Camaro
Engine: 350 Roller Motor
Transmission: Level 10 700R4
Axle/Gears: Strange 12 bolt 3.42
Re: L98 High Flow Y-Pipe
http://www.hawksthirdgenparts.com/pr...ifolds%29.html
Mac Performance has, (had), a regular steel one but their site is fubar'ed at the moment.
Mac Performance has, (had), a regular steel one but their site is fubar'ed at the moment.
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Car: 1984 LG4 Camaro
Engine: 350 Roller Motor
Transmission: Level 10 700R4
Axle/Gears: Strange 12 bolt 3.42
Re: L98 High Flow Y-Pipe
Picked up the Magnaflow last week - can't wait to get it and the 3.5" Mufflex exhaust installed...
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Car: 1988 GTA
Engine: LB9
Transmission: T5
Axle/Gears: 3.45
Re: L98 High Flow Y-Pipe
I used the Magnaflow 16450, and it's a great piece. Fits nice, sounds great, and I'm sure it flows better than the stock "Y"... I mean "T" pipe.
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Car: 1984 LG4 Camaro
Engine: 350 Roller Motor
Transmission: Level 10 700R4
Axle/Gears: Strange 12 bolt 3.42
Re: L98 High Flow Y-Pipe
They say 5 to 10hp, not all that much. But keep in mind the amount of labor involved in putting in headers for a 10 to 15hp gain - it's not a 2 hour project by any means. All that has to be done with the y-pipe is cut a few manifold to y-pipe bolts and replace them and the y-pipe.
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Car: 1988 GTA
Engine: LB9
Transmission: T5
Axle/Gears: 3.45
Re: L98 High Flow Y-Pipe
Without getting into the pros and cons of headers, if you want to keep the exhaust manifolds this pipe is a good move. If you ever see a stock pipe laying right next to the Magnaflow 16450, you'll know what I mean.
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Car: 1984 LG4 Camaro
Engine: 350 Roller Motor
Transmission: Level 10 700R4
Axle/Gears: Strange 12 bolt 3.42
Re: L98 High Flow Y-Pipe
Although I did post an old article on the thirdgenfbody blog that shows a good aftermarket y-pipe is worth 5hp on a stock TPI L98 motor. I'm not wasting time on a dyno, since I don't have one in the shop and would hate to pay for just that... Turbo City y-pipe in the article.
http://thirdgenfbody.wordpress.com/2...ft-april-1989/
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