people with Spohn crossmembers, need exhaust help.
Thread Starter
Senior Member
iTrader: (2)
Joined: Jul 2002
Posts: 784
Likes: 1
From: Philly, PA
Car: 1986 Camaro SC
Engine: None
Transmission: None
Axle/Gears: Moser 9" W/ spool 3.50 gears
people with Spohn crossmembers, need exhaust help.
I have a car that im close to putting together. I dont know what im doing with the exhaust yet but i have a feeling that the spohn crossmember will be in the way of the header tubes when they get bolted up. The crossmsber is for a th350 conversion. Anyone have a similar set up, maybe with pics?
Supreme Member
iTrader: (5)
Joined: Jan 2002
Posts: 13,622
Likes: 5
From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: people with Spohn crossmembers, need exhaust help.
Hope you don't plan on running true duals, because the crossmember hangs too low to make it possible. Sell the spohn and buy another brand, jegs, bmr, etc etc.
Thread Starter
Senior Member
iTrader: (2)
Joined: Jul 2002
Posts: 784
Likes: 1
From: Philly, PA
Car: 1986 Camaro SC
Engine: None
Transmission: None
Axle/Gears: Moser 9" W/ spool 3.50 gears
Re: people with Spohn crossmembers, need exhaust help.
Thats what it looks like. I do need to run duals, I need to know who has done it and how. I have a pretty good exhaust shop but would like to bring them a good idea or two.
Supreme Member
iTrader: (5)
Joined: Jan 2002
Posts: 13,622
Likes: 5
From: Orland Park, IL
Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: people with Spohn crossmembers, need exhaust help.
I haven't seen anyone do it, look on the exhaust board, most people start cutting and hacking on the crossmember to get it done.
Supreme Member
iTrader: (3)
Joined: Jan 2004
Posts: 2,311
Likes: 0
From: p'cola FL
Car: 88 iroc-z/28
Engine: 408 lsx
Transmission: 5800 stall
Axle/Gears: 4.71
Re: people with Spohn crossmembers, need exhaust help.
my exhaust guy is the best. he really can get stuff in tight places. ive trimmed my spohn x member as well, to allow the pipes to tuck up a lil closer.
this is the best pic i have.
ground clearance isnt great, but i do not scrub over speedbumps at all.
m very happy with all my spohn products. if i wouldnt have bought this torque arm 5 years ago, id go with a shorty cross brace style.
exhaust routing is frustrating.
this is the best pic i have.
ground clearance isnt great, but i do not scrub over speedbumps at all.
m very happy with all my spohn products. if i wouldnt have bought this torque arm 5 years ago, id go with a shorty cross brace style.
exhaust routing is frustrating.
Member
iTrader: (5)
Joined: Jan 2006
Posts: 366
Likes: 0
From: Pittsburgh
Car: 1987 firebird
Engine: 1995 lt1 383
Transmission: 4l60e
Axle/Gears: moser 9" with 3.70
Re: people with Spohn crossmembers, need exhaust help.
I ran my 3" exhaust from my long tubes under or around spohns crossmember, and it was a pain in the but. I is almost the same as stage20s and it sure is low to the ground.
Supreme Member
iTrader: (3)
Joined: Jan 2004
Posts: 2,311
Likes: 0
From: p'cola FL
Car: 88 iroc-z/28
Engine: 408 lsx
Transmission: 5800 stall
Axle/Gears: 4.71
Re: people with Spohn crossmembers, need exhaust help.
ive never measured my clearance or put a beer can against it for a pic.
i should do that sometime.
i should do that sometime.
Trending Topics
Senior Member

Joined: Sep 2006
Posts: 747
Likes: 1
From: Reno, NV
Car: 1982 Z28 & 1967 RR/SS 396
Engine: ZZ383 & 375hp 396
Transmission: T56 & factory TH400
Axle/Gears: 9" ford & 12 bolt 4.10
Re: people with Spohn crossmembers, need exhaust help.
I got my Spohn crossmember and said WFT! I am never going to have room for exhaust. I ended up cutting the factory subframe out and making new frame rails. Not I have dual 3" exhaust with tons or room!
Member
Joined: Jul 2007
Posts: 295
Likes: 0
From: Lake Jackson Tx
Car: 91z,97ws6,98fb,87&90jeep,05 yz250
Engine: 5.0tpi,5.7LT4,5.7LS1,4.2I6,5.7TPI,1
Transmission: t5,4l60e,
Axle/Gears: 3.42
Re: people with Spohn crossmembers, need exhaust help.
i take it your talking tranny x-member follow the link to see our's on the 92 2 1/2 true duel's
Supreme Member
iTrader: (3)
Joined: Jan 2004
Posts: 2,311
Likes: 0
From: p'cola FL
Car: 88 iroc-z/28
Engine: 408 lsx
Transmission: 5800 stall
Axle/Gears: 4.71
Re: people with Spohn crossmembers, need exhaust help.
Senior Member

Joined: Sep 2006
Posts: 747
Likes: 1
From: Reno, NV
Car: 1982 Z28 & 1967 RR/SS 396
Engine: ZZ383 & 375hp 396
Transmission: T56 & factory TH400
Axle/Gears: 9" ford & 12 bolt 4.10
Re: people with Spohn crossmembers, need exhaust help.
Of coarse there are pictures. 
check out the following links for pictures.
https://www.thirdgen.org/forums/susp...-wont-fit.html
https://www.thirdgen.org/forums/exha...html?highlight=
https://www.thirdgen.org/forums/fabr...html?highlight=

check out the following links for pictures.
https://www.thirdgen.org/forums/susp...-wont-fit.html
https://www.thirdgen.org/forums/exha...html?highlight=
https://www.thirdgen.org/forums/fabr...html?highlight=
Senior Member
iTrader: (2)
Joined: Jan 2003
Posts: 721
Likes: 2
From: MN
Car: 1982 Camaro
Engine: 555 BBC
Transmission: TSI Glide
Axle/Gears: Aluminum Moser 3.89
Senior Member

Joined: Sep 2006
Posts: 747
Likes: 1
From: Reno, NV
Car: 1982 Z28 & 1967 RR/SS 396
Engine: ZZ383 & 375hp 396
Transmission: T56 & factory TH400
Axle/Gears: 9" ford & 12 bolt 4.10
Member
Joined: Feb 2005
Posts: 138
Likes: 0
From: PA
Car: 85 Camaro
Engine: 437" small block
Transmission: glide
Axle/Gears: 3.70
Re: people with Spohn crossmembers, need exhaust help.
I have 3.5" true duals on my car with a spohn crossmember. Two slight bends off the header and a small clearance notch on the top side of the pipe. Notch in pipe only needed since my car sits pretty low. I have also put 3" on a friends car with with no issues. I don't have any good pics on the work comp of under the car. Here's the best I can do at work. I can take some better pics this weekend. Both cars are street driven with no issues.

Here's how low the car sits.

Here's how low the car sits.
Supreme Member
Joined: Mar 2005
Posts: 1,665
Likes: 3
From: Benzie, MI
Car: 91 rs
Engine: Blow through 383, 10 psi, xr288hr
Transmission: Manual th350 ATI 3000
Axle/Gears: 3.50 9"
Re: people with Spohn crossmembers, need exhaust help.
I have the spohn with th350 and am running dual 3". I angled the exhaust to go under the crossmember at the highest point. It scraped like hell. So then I put a jack under with some wood and mushed the pipes a little. MMMMMMM Still scraped. I then put stiffer springs in the front, and tokiko adjustable shocks. The old shocks were blown to hell. I now have no problems no matter how fast I go down bumpy roads. Nice ride too. Havent hit any speed bumps yet. Car still isnt road legal.
Radial tire king your car gives me wood. I cant wait until the track opens up and I can take my new car.
Radial tire king your car gives me wood. I cant wait until the track opens up and I can take my new car.
Joined: Sep 2003
Posts: 25,895
Likes: 429
From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: people with Spohn crossmembers, need exhaust help.
very nice exhaust work...i'm in this boat now..i want to run a true dual 3inch setup and i have no clearance under the car. If i run the pipes around the crossmember in best spot for maximum clearance i think i will only have 2-3 inches of clearance. I could live with that but i'm considering notching the frame for another 1 inch or so. Shouldnt cause too much structural damage..especially if i box it all back up with some plate steel and run subframe connectors, tieing it all together and then possibly a 8 point cage
Thread
Thread Starter
Forum
Replies
Last Post
downsouthboy
Tech / General Engine
4
Aug 29, 2015 11:29 AM









