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Old Mar 2, 2003 | 02:19 AM
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From: michigan
4"

anyone here have 4" exhaust?
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Old Mar 2, 2003 | 05:03 AM
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From: Buffalo, NY
Car: 1988 IROC-Z
Engine: 427 SBC
Transmission: ProBuilt 700R4
Axle/Gears: Moser 12 Bolt / 3.73 TrueTrac
4"? How much power is that new motor pushing?
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Old Mar 2, 2003 | 02:17 PM
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From: michigan
enough.....


i was just curious if there is anyone else out there with the same setup or similar.

there's definately alot of air going through with the 4" cai, miniram and 4" exhaust.
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Old Mar 3, 2003 | 01:33 PM
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From: Tucson, AZ
Car: 1991 Z-28
Engine: Can you say stroke?!?!
Transmission: 700-r4
Axle/Gears: 3.42
I'd be interested to. I already have the exhuast and my motor is in the works but I think I'm going with the HSR. If you have any q's about the exhuast itself, give me a holla.
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Old Mar 3, 2003 | 07:36 PM
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From: N.W. Houston
Car: 87 IROC Z-28
Engine: 406-Mini Ram-AFR 195's-DFI Gen 6.32
Transmission: 700-R4 w/Art Carr converter
Axle/Gears: 9" - 31 spline - 3:89
I have a 3 1/2" that I fabricated with mandrel bends and flanged for easy removal.
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Old Mar 3, 2003 | 09:08 PM
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From: ny-lindy
Car: 1989 Iroc z hardtop
Engine: peanut LB9
Transmission: slopomatic TH700R4
i have a friend with a 84z2b with a 350sbc. he ran some lt headers an custom fabbed up a 4" setup, the only problem wit his is that he has about 4" of ground clerance and kees smashing it up.
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Old Mar 4, 2003 | 12:53 AM
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really?

i was able to get alot of ground clearance with my 4" setup.....however putting a tubular k-member allowed me to angle things a little better which helped with that.

a friend of mine running the same setup with the stock k-member has almost 2" less than myself.

sure is a large pipe to try and hide on a car that clearly wasn't designed for that.
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Old Mar 4, 2003 | 12:12 PM
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From: ny-lindy
Car: 1989 Iroc z hardtop
Engine: peanut LB9
Transmission: slopomatic TH700R4
it only that low when he has the tubing ran from the drivers side to the passangers side for the Y pipe
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Old Mar 4, 2003 | 01:35 PM
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see we have more problem with the long tube header clearance issues............the pipe itself was pretty easy to tuck up in there. however, we did have to fabricate some of the pieces to make room.
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Old Mar 4, 2003 | 02:13 PM
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From: Stillwater, OK
Car: 1991 Formula
Engine: 355 DFI Superram w/ R-Trim
Transmission: Probuilt 700r4
I've got 4" Mufflex catback, their y-pipe, and supercomp lt's. The ground clearance is fair, the exhaust weighs a ton, and the sound is perfect. (the Flowmaster version) The main clearance issue is the ypipe going under the tranny crossmember.
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Old Mar 4, 2003 | 02:17 PM
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yeah i definately need to change my crossmember....
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Old Mar 4, 2003 | 02:20 PM
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From: Stillwater, OK
Car: 1991 Formula
Engine: 355 DFI Superram w/ R-Trim
Transmission: Probuilt 700r4
Maybe you could fab your own with two "humps" in it. I've heard people talking about it in the past, but I have never seen any pictures.
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Old Mar 4, 2003 | 02:25 PM
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yeah, that's basically what i plan to do......alot cheaper than buying one. just need to find the time.
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Old Mar 4, 2003 | 03:26 PM
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From: Stillwater, OK
Car: 1991 Formula
Engine: 355 DFI Superram w/ R-Trim
Transmission: Probuilt 700r4
Please post a picture in this thread if you ever get around to it. Do you have any pictures of your current 4" install?
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Old Mar 4, 2003 | 03:37 PM
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From: Stillwater, OK
Car: 1991 Formula
Engine: 355 DFI Superram w/ R-Trim
Transmission: Probuilt 700r4
double post
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Old Mar 4, 2003 | 06:43 PM
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once things warm up and i get back to work on the car in a couple weeks i will post more pictures.
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Old Mar 4, 2003 | 08:48 PM
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From: ny-lindy
Car: 1989 Iroc z hardtop
Engine: peanut LB9
Transmission: slopomatic TH700R4
my friend has long tubes too. he has a problem like u said, when u bring it over to the passangers side at the tranny cross member, he said something like the spohn tq arm has a differnet crossemeber that they supply they you with. so he doesn't have any clerance problems. have you ever heard of something like this?
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