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Mufflex works!

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Old Aug 7, 2012 | 09:09 PM
  #1  
Maria8's Avatar
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From: Northern Indiana
Car: 1985 Pontiac Trans-Am
Engine: AFR 235,Dart 400 Procharger F2. EFI
Transmission: Coan 400 + Gearvendors
Axle/Gears: racecraft 9"
Mufflex works!

I have a third gen TA with an F2 procharger. I put down 1005 RWHP. I have run 8.88@ 156 with the 4" mufflex system. Car weighs 3700# with me in it. I finally got a decent video from someone to post. I have 1 3/4" super comps with 3" mandred bent tubes going into the single 4" wiwth a flowmaster muffler. I know I could use more exhaust but this is what I have and this is the best video I have to show so far.
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Old Aug 7, 2012 | 09:27 PM
  #2  
Maria8's Avatar
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From: Northern Indiana
Car: 1985 Pontiac Trans-Am
Engine: AFR 235,Dart 400 Procharger F2. EFI
Transmission: Coan 400 + Gearvendors
Axle/Gears: racecraft 9"
Re: Mufflex works!

http://i1182.photobucket.com/albums/...h_DSC00736.jpg
This is what I did. I have a turbo 400 with a gearvendords overdrive and a madman torque arm. We got as creative as our skills allowed. I am still working on gremlins but the car works decent with what we have.
<a href="" target="_blank"><img src="http://i1182.photobucket.com/albums/...i/DSC00736.jpg" border="0" alt="Photobucket"></a>

Last edited by Maria8; Aug 7, 2012 at 09:34 PM. Reason: better pic
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Old Aug 7, 2012 | 10:57 PM
  #3  
LB9GTA's Avatar
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From: Manitoba
Car: '91 GTA
Engine: 421sbc
Transmission: Powerglide
Axle/Gears: Ford 9" with 3.89
Re: Mufflex works!

Nice!

Got a closer pic of your trans mount?
What kind of headers?

I too have a mufflex 4", soon to be with Ed Quay long tube 1 7/8. In the process of putting them in right now...
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Old Aug 8, 2012 | 10:23 AM
  #4  
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From: Ahead of you...
Car: 1984 LG4 Camaro
Engine: 350 Roller Motor
Transmission: Level 10 700R4
Axle/Gears: Strange 12 bolt 3.42
Re: Mufflex works!

Very nice! That is impressive for the size of the pipes!

I have a 3.5" Mufflex system and it gave me another 2mph in trap speed vs. the 3" Banks system I had on it previously. Went from about 125 to almost 127 with that change.
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Old Aug 21, 2012 | 01:20 PM
  #5  
Maria8's Avatar
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From: Northern Indiana
Car: 1985 Pontiac Trans-Am
Engine: AFR 235,Dart 400 Procharger F2. EFI
Transmission: Coan 400 + Gearvendors
Axle/Gears: racecraft 9"
Re: Mufflex works!

up date, can ran 8.74 this weekend
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Old Aug 21, 2012 | 01:47 PM
  #6  
Orr89RocZ's Avatar
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From: Pittsburgh PA
Car: 89 Iroc-z
Engine: 555 BBC Turbo
Transmission: TH400
Axle/Gears: MWC 9” 3.00
Re: Mufflex works!

Thats pretty good. Have you tried straight pipe or thought about duals 3"? My turbo car saw 1.5-2 psi less boost on same wastegate setting goin from single 4" to dual 3". It reduced back pressure tremendously and that had to free up power but i never got consistant back to back runs. Changed to many other things
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Old Aug 21, 2012 | 06:08 PM
  #7  
Maria8's Avatar
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From: Northern Indiana
Car: 1985 Pontiac Trans-Am
Engine: AFR 235,Dart 400 Procharger F2. EFI
Transmission: Coan 400 + Gearvendors
Axle/Gears: racecraft 9"
Re: Mufflex works!

I know my exhaust is a bit restrictive for my set up, but I just love the sound and the clean install. I installed and used a 4" cut out to bypass the flowmaster muffler and that helped. What the car REALLY needs and will get once the funds permit will be 2" custom headers with 3.5" dual mandrel to replace the current 3" then I will cut the floor and have a custom 5" single built to copy the current 4". Gonna be A LOT of work but the entire car has been A LOT of work, that will be next winter. We are gonna try and wring out as much as we can with what I have. I will post pictures when I get it on the lift.
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Old Aug 21, 2012 | 08:44 PM
  #8  
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From: Sanctuary state
Car: 67 ******mobile
Engine: 385 Solid roller
Transmission: T-56
Axle/Gears: 4.11
Re: Mufflex works!

Rather than cut the floor what about that oval type pipe (cant recall the mfr name),guys with high powered lowered guys/circle track guys run them a lot.

Car runs hard, nice!
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Old Sep 6, 2012 | 10:13 PM
  #9  
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From: West monroe
Car: 1991 rs camaro
Engine: 305
Transmission: 700r4
Axle/Gears: 3.73
Re: Mufflex works!

Ugh stock 305 here. Just going to back out of this big boy thread.
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Old Sep 7, 2012 | 08:25 AM
  #10  
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From: Washington State
Car: 1983 BB 1995 Z28 Camaro's
Engine: 454-350
Transmission: TH350-4l60e
Axle/Gears: 373 posi-Stock
Re: Mufflex works!

Very nice Maria, video had me shifting in my chair. Thanks for sharing.
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Old Sep 7, 2012 | 08:33 AM
  #11  
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From: Manitoba
Car: '91 GTA
Engine: 421sbc
Transmission: Powerglide
Axle/Gears: Ford 9" with 3.89
Re: Mufflex works!

Originally Posted by LB9GTA
Nice!
Got a closer pic of your trans mount?
Got a closer pic of the trans mount?
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Old Sep 14, 2012 | 03:45 PM
  #12  
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From: Spokane WA
Car: 92 Lingenfelter Z28 articwhite
Engine: Aluminum 615BBC
Transmission: Th400wbrake/curri entps9" locker
Axle/Gears: 4.11/4.30/4.56
Re: Mufflex works!

Kewl Ride...
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Old Sep 16, 2012 | 07:26 AM
  #13  
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From: Harford County, MD
Car: camaro sportcoupe
Engine: 7.0L
Transmission: G-Force GF5R
Axle/Gears: Moser 9"
Re: Mufflex works!

in for pics of 5" system. are you going to try to take it over the axle too?
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