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Exhaust scrapping the ground

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Old Oct 20, 2013 | 07:53 PM
  #1  
skylineR32's Avatar
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From: Cedar Rapids, IA
Car: 89 Formula 350
Engine: 406 HSR
Exhaust scrapping the ground

I have a Mufflex 4 inch exhaust with a Mufflex Y-pipe and Hooker long tubes and Eibach Sportline springs.
My Y-pipe will scrape the ground with relatively small bumps in the roads and where I live they don't really take care of the roads. Does any one here have any suggestions on how I could better route my exhaust. I would really like to keep these springs my car rides good and handles great. I'm just worried damaging my exhaust so any help would be appreciated.
Thanks!
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Old Oct 20, 2013 | 08:30 PM
  #2  
rusty vango's Avatar
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Joined: Jun 2011
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From: knoxville tn
Car: 86 IROC
Engine: 5.0 TPI
Transmission: 700-R-4
Axle/Gears: 2.73 open
Re: Exhaust scrapping the ground

Originally Posted by skylineR32
I have a Mufflex 4 inch exhaust with a Mufflex Y-pipe and Hooker long tubes and Eibach Sportline springs.
My Y-pipe will scrape the ground with relatively small bumps in the roads and where I live they don't really take care of the roads. Does any one here have any suggestions on how I could better route my exhaust. I would really like to keep these springs my car rides good and handles great. I'm just worried damaging my exhaust so any help would be appreciated.
Thanks!
either get rid of the exhaust OR the "lowering" springs.these cars are already low to the ground .and many,many people have done what you have ,only to find its a either or deal especially considering rough roads .sorry about your luck
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Old Oct 20, 2013 | 10:58 PM
  #3  
ImBrandon's Avatar
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From: Philadelphia,Pa
Car: 1991 Pontiac Trans Am
Engine: 305 TPI
Transmission: 700R4
Axle/Gears: 3:42
Re: Exhaust scrapping the ground

Put the stock springs back in and maybe put some bigger rims on it lol. Worst case scenario get shorty headers and diff y-pipe for a more "driveable" car.
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Old Oct 21, 2013 | 05:23 AM
  #4  
jmpowie's Avatar
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From: NH
Car: 91 canaro rs
Engine: 5.0
Transmission: 5 speed
Re: Exhaust scrapping the ground

Weld on a 1/4" piece of flat stock to your y-pipe and just live with the sparks. It aint easy, being cheesy!
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Old Oct 22, 2013 | 11:07 AM
  #5  
Jim85IROC's Avatar
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
Re: Exhaust scrapping the ground

Have a new crossmember made that has room for the pipes to tuck up higher, and have a new y-pipe made that goes through that new section, then merges near the tailshaft. This has been done on a number of thirdgens and should allow for the entire y-pipe to sit higher than the header collectors.

For example, this is the crossmember that Justin89Formy had made for his LS swap:
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Views: 438
Size:  1.99 MB

Last edited by Jim85IROC; Oct 22, 2013 at 11:12 AM.
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Old Oct 22, 2013 | 11:53 AM
  #6  
Justin89Formy's Avatar
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From: Moneta, VA
Car: 89 formula 350
Engine: ls1 magnuson tvs2300 supercharger
Transmission: T56
Axle/Gears: 4.11 Dana 44!
Re: Exhaust scrapping the ground

My y pipe consists of oval tubing as well
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Size:  4.90 MB

I have more ground clearance than a stock thirdgen I think
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Views: 433
Size:  4.05 MB

I'm running a 4" y pipe and 4" mufflex exhaust too
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Old Oct 22, 2013 | 01:37 PM
  #7  
Jim85IROC's Avatar
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
Re: Exhaust scrapping the ground

That looks good dude. Every LS-swapped thirdgen I see always has the exhaust hanging way too low. Yours really sets the bar.
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Old Oct 22, 2013 | 08:42 PM
  #8  
skylineR32's Avatar
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From: Cedar Rapids, IA
Car: 89 Formula 350
Engine: 406 HSR
Re: Exhaust scrapping the ground

Justin89Formy

That looks great.
I thought of putting the factory springs back in it but I didn't think the extra inches would make much difference.
Thanks!
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Old Oct 29, 2013 | 10:47 PM
  #9  
LB9GTA's Avatar
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From: Manitoba
Car: '91 GTA
Engine: 421sbc
Transmission: Powerglide
Axle/Gears: Ford 9" with 3.89
Re: Exhaust scrapping the ground

This is what I did with my long tube Ed Quay 1 7/8 headers to 3" collectors and then merged to a single 4" over the axle and out the back
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Size:  36.5 KB

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Size:  74.1 KB
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