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Flowmaster Muffler Question

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Old Mar 16, 2007 | 01:57 PM
  #1  
86FireBird305's Avatar
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From: Middlesex,NJ
Car: 1986 Firebird LG4
Engine: 305 5.0 LG4
Transmission: TH-700R4
Axle/Gears: 2.73
Flowmaster Muffler Question

I got the flowmaster american thunder cat back system for my bird... i had a friend install it for me about a year ago and i dont talk to him anymore..

the tips are always un even...no matter how hard i try i cant get them even..so my question is y might this be and does anyone else have this problem
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Old Mar 16, 2007 | 05:47 PM
  #2  
tsibouky's Avatar
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From: laval, quebec
Car: 85 black on red t-top t/a
Engine: 305 h.o. l69
Transmission: t-5
Axle/Gears: borg w/ discs 3.70 posi
adjustments ... adjustments

i had the same prob with my tbi, my right side hanger broke, wich may have not helped, hanged it with brass wire but i also tried several times to adjust it, i played around with the muffler shifting it side to side up down, got it right but would not last with these horrible quebec roads, but i realized that i also used the shitty donut style clamps and not good quality clamps so the exhaust would shift on its own, if u have crap clamps maybe u should upgrade and checked all ur hangers to see if they are broken or sanging then if all is good just take an afternoon to play around with the muffler and tips, ul get it eventualy but it may not stay that way for long... dont let get to u it doesnt show unless u make the other person realize it, thats what i noticed
my left tip always sticked out more then the right ... but the sound was worth it ...
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Old Mar 16, 2007 | 10:28 PM
  #3  
86FireBird305's Avatar
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From: Middlesex,NJ
Car: 1986 Firebird LG4
Engine: 305 5.0 LG4
Transmission: TH-700R4
Axle/Gears: 2.73
ya i hear ya...i had the same problem with the clamps...it used to shift alot...but then i got it on there nice and tight...but the tips were always uneven...i guess the next exhaust system i get im gonna have a pro do it
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Old Mar 17, 2007 | 05:37 PM
  #4  
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Car: 1988 Trans Am
Engine: 305 TPI
Transmission: Auto
lol I had and still have the same problem but my problem is not the shifting clamps just y pipe is on a weird angle so it messied up the direction of the cat back. No problem tho, I'lll just fix when I get the headers.

The sound of the system is pretty damn good.

Pat
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Old Mar 17, 2007 | 07:17 PM
  #5  
86FireBird305's Avatar
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From: Middlesex,NJ
Car: 1986 Firebird LG4
Engine: 305 5.0 LG4
Transmission: TH-700R4
Axle/Gears: 2.73
we never touched the y pipe...and the shifting clamp issue is solved but still no luck
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Old Mar 17, 2007 | 08:28 PM
  #6  
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Car: 1988 Trans Am
Engine: 305 TPI
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its not like I have touched the y pipe either. However to fix my problem, i'll (or my mechanic buddy) will have to bend (adjust) the y-pipe just so the angle headed towards the cat back will be correct or you can just bend the inter-mid pipe to straighten out the muffler. But I wont' be doing this till I recieve my SLP's, then when I have the whole exhaust system in play then I'll make the necessary adjustments to make it look as good as it sounds.

Pat
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Old Mar 18, 2007 | 01:44 AM
  #7  
86FireBird305's Avatar
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From: Middlesex,NJ
Car: 1986 Firebird LG4
Engine: 305 5.0 LG4
Transmission: TH-700R4
Axle/Gears: 2.73
did u have to cut any of the pipes in ur flowmaster kit?
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Old Mar 18, 2007 | 12:23 PM
  #8  
Screamin86's Avatar
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From: Verona Va
Car: 86 Trans Am,03 Yukon,92 Z28
Engine: 5.3, 5.3, lb9
Transmission: th350,4l60e,700r4
Axle/Gears: 3.73,3.73,2.73
uneven tips drives me nuts when i had stock exhaust on my car the driverside tip was bent out slightly towards the outside of the car and it drove me nuts. i was very happy when i got my flowmaster catback on since it was done very symetrical and stright.
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Old Mar 28, 2007 | 03:32 PM
  #9  
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Car: 1988 Trans Am
Engine: 305 TPI
Transmission: Auto
Re: Flowmaster Muffler Question

no cutting is required however a pipe bending machine is used to adjust the angle of the intermed-pipe (thats how my friends' uncles shop did it for me).

pat
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Old Mar 28, 2007 | 04:45 PM
  #10  
Rob Wade's Avatar
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Joined: May 2005
Posts: 777
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From: Windsor Ontario Canada
Car: 89 jaguar xjs convertable
Engine: 89 L98 5.7 TPI
Transmission: 700R4
Axle/Gears: 3.23 dana 44
Re: Flowmaster Muffler Question

Got any pics? I have been building custom exhausts for 20 years and what kills me about some peoples work is this. The tips or tailpipes are really, the only part of the exhaust people see.....so if your gonna ***** up any part of the system, make sure its not the tips. Post some pics....I'll tell ya how you might fix it.
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Old Mar 28, 2007 | 08:56 PM
  #11  
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From: laval, quebec
Car: 85 black on red t-top t/a
Engine: 305 h.o. l69
Transmission: t-5
Axle/Gears: borg w/ discs 3.70 posi
Re: Flowmaster Muffler Question

Originally Posted by 86FireBird305
did u have to cut any of the pipes in ur flowmaster kit?
i cut the flared pipe, the one that's supossed to hook up to ur cat, i never reinstalled the cat just put a strait pipe so i dint want to complicate my life and bubble flair the strait pipe, cut and clamped dint have any problems there
to be honest after i hook up the system, it was awsome but in the end i dint like the 2 huge pipes coming out the back, its very muscle but 3rd gens are more sporty then muscle if u ask me, on my current 3rd gen i just gonna have the muffs end before the diff and have turn downs, thats all, keeping the rear end clean
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Old Mar 29, 2007 | 11:23 AM
  #12  
86FireBird305's Avatar
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From: Middlesex,NJ
Car: 1986 Firebird LG4
Engine: 305 5.0 LG4
Transmission: TH-700R4
Axle/Gears: 2.73
Re: Flowmaster Muffler Question

well im using a cat so that dont matter
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