LS1, T56, spoon crossmember, Hawk's longtubes what to fo about Y-Pipe?
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Junior Member
Joined: Jan 2012
Posts: 46
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Car: 1987 Iroc
Engine: LS1
Transmission: 4L60E
LS1, T56, spoon crossmember, Hawk's longtubes what to fo about Y-Pipe?
Does anyone make a Y-pipe to work with this crossmember or should I have a custom one made?
Senior Member
iTrader: (1)
Joined: Aug 2006
Posts: 632
Likes: 4
From: Bethlehem, CT
Car: 1983 Firebird SE
Engine: C5 LS1
Transmission: 6 speed
Axle/Gears: 3.42
Re: LS1, T56, spoon crossmember, Hawk's longtubes what to fo about Y-Pipe?
I think most folks are using the Hawk's double humped transmission mount (the Skulte original has been discontinued- Skulte has closed and moved on).
Joined: Jun 2006
Posts: 576
Likes: 4
From: Gobles, Michigan
Car: 92 Ttop Z28
Engine: Cammed 6.0
Transmission: T-56
Axle/Gears: Built 10 bolt-3.90s w/ PBR discs
Re: LS1, T56, spoon crossmember, Hawk's longtubes what to fo about Y-Pipe?
I wish spohn would make a double humped crossmember with the torque arm mount on the crossmember. Looks like the only option without hand fabricating, is hawks double hump crossmember, and BMR's trac-pack torque arm.
I have had my spohn crossmember mounted TA on my car for less than 100 miles and now I have to ditch the whole setup!
I have had my spohn crossmember mounted TA on my car for less than 100 miles and now I have to ditch the whole setup!
Joined: Jun 2006
Posts: 576
Likes: 4
From: Gobles, Michigan
Car: 92 Ttop Z28
Engine: Cammed 6.0
Transmission: T-56
Axle/Gears: Built 10 bolt-3.90s w/ PBR discs
Re: LS1, T56, spoon crossmember, Hawk's longtubes what to fo about Y-Pipe?
The crossmember mounted torque arm crossmember is built the same way as yours, which poses an exhaust routing issue with long tubes( which previous to my ls swap, I did not have). To make exhaust without sacrificing ground clearance, ou usually swap to a double hump crossmember for exhaust clearance. They just don't make one that has a torque arm mount on the crossmember.
Joined: Jun 2006
Posts: 576
Likes: 4
From: Gobles, Michigan
Car: 92 Ttop Z28
Engine: Cammed 6.0
Transmission: T-56
Axle/Gears: Built 10 bolt-3.90s w/ PBR discs
Re: LS1, T56, spoon crossmember, Hawk's longtubes what to fo about Y-Pipe?
Hawks makes longtube y-pipes, but I believe is only for the smaller sized headers. Even with those, most are not happy with fit and quality. You are pretty much on your own for a ypipe, but the double hump crossmember makes it MUCH easier, and gives you more ground clearance when doing so.
Senior Member
iTrader: (1)
Joined: Aug 2006
Posts: 632
Likes: 4
From: Bethlehem, CT
Car: 1983 Firebird SE
Engine: C5 LS1
Transmission: 6 speed
Axle/Gears: 3.42
Re: LS1, T56, spoon crossmember, Hawk's longtubes what to fo about Y-Pipe?
I did 2 1/2" y into 3". Got good ground clearance... friend who did exhaust worked at it.
Using a Spohn trans mounted Torque Arm.
Using a Spohn trans mounted Torque Arm.
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Re: LS1, T56, spoon crossmember, Hawk's longtubes what to fo about Y-Pipe?
Hawks makes a 2.5" Y-pipe to go with crossmembers like that. You'll have to modify it to fit your flanged headers as it is designed for slip fit collectors
http://www.hawksthirdgenparts.com/pr...logy-Cats.html
I have one FS if you're interested
http://www.hawksthirdgenparts.com/pr...logy-Cats.html
I have one FS if you're interested
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