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Fabricating a third gen turbo

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Old Apr 16, 2004 | 01:17 PM
  #1  
TurboedTPI's Avatar
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From: on the street
Car: 92 Formula 350
Engine: L98 with a T-76
Transmission: ArtCarr 700-R4
Axle/Gears: Bone stock 10bolt and 3.23's
Fabricating a third gen turbo

When i put the BBS turbo header and turbo on my car, i realised that making the down pipe was not going to be an easy task. Being that i live so close to a world known performance turbo car shop, i went and asked them about doing the exhaust on my car. They were pretty pumped when i told them i was making a turbo V8 firebird, because they specialize in turbo 4 cylinder AWD mitsubishi's. (not that they are are slow, because they have plenty of 650+ whp 4 cylinders there) So i droped the car off to them and they did the down pipe, crossover pipe, and the wastegate dump tube. All the work was excelent. None of the pipes hit any of the body and it looks great. So if anyone lives near chicago, look up AMS. They have a web site, it's www.automotosports.com
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Old Apr 17, 2004 | 09:01 AM
  #2  
super_kev's Avatar
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From: N. CA
Car: '85 TA
Engine: Aluminum Fuelie
Transmission: Mother of All Manuals
Have any pictures of their work on your engine?
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Old Apr 19, 2004 | 07:30 PM
  #3  
TurboedTPI's Avatar
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From: on the street
Car: 92 Formula 350
Engine: L98 with a T-76
Transmission: ArtCarr 700-R4
Axle/Gears: Bone stock 10bolt and 3.23's
Not yet. I dont have a digital camera.
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Old Apr 20, 2004 | 09:33 AM
  #4  
Rockin-Iroc's Avatar
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From: Morrison, Colorado
Car: 1986 IROC-Z
Engine: 355 ci TPI, 10:1 cr, Isky cam, ported heads, dual exhaust
Transmission: 700R4, ratchetting shifter, 3.23 rear
Right now I have an IROC with a 10:1, Isky cammed 355 with a true dual exhaust, that I plan to keep "high compression" and stroke the 4-bolt block to a 383. But this car is going to my daughter for her college car.

My wife and I really want to get another F-body, because we're hooked. This time most likely a Trans Am with a tuned port and T-tops. I don't care if it's 5.0 liter or 5.7, because It's going to get a 350 with a single turbo. Why only a single turbo? Because one thing that true dual exhaust taught me on the IROC is that these things don't have ANY room for anything fancy like a twin turbo. As it is, fitting a single turbo in there is quite a feat. I imagine it would almost have to be installed low, with an oil sump pump, about where a Y-pipe would go, tucked kind of close to the oil pan. Then you need a good splash shield and care not to drive into ANY deep standing water.

I know a centrifugal supercharger would be the easy solution, but I am convinced even a single turbo could vastly out-perform a supercharger if it's sized right. Plus you still have room for your air conditioning compressor.

If you don't have any pics, could you at least describe how you did it, where the turbo sits, and what your exhaust system is like?
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Old Apr 20, 2004 | 09:38 AM
  #5  
Guido's Avatar
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Joined: Jul 1999
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From: Indianapolis, IN
Car: 2000 Trans Am
Engine: LS1
Transmission: T56
rockin IROC, do a search for "bbs turbo" and it shoudl return you plenty of pictures of his headers.

Also, you can check out my webpage. There are plenty of pictures of the single turbo I had on my thirdgen

www.hustonstreetracing.com
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Old Apr 30, 2004 | 01:28 PM
  #6  
blown sn-95's Avatar
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I have a new set of twin turbo headers that fit 82-92 camaro/firebird $475.00 shipped
email me at mike@crimestopper.com
Attached Thumbnails Fabricating a third gen turbo-twin-turbo-headers-3.jpg  
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Old May 2, 2004 | 04:49 PM
  #7  
Rockin-Iroc's Avatar
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From: Morrison, Colorado
Car: 1986 IROC-Z
Engine: 355 ci TPI, 10:1 cr, Isky cam, ported heads, dual exhaust
Transmission: 700R4, ratchetting shifter, 3.23 rear
Looks like they mount the turbos up high above the valve covers, near the front of the engine. What the heck do you do with the accessories? If you didn't have to have an air pump, you could relocate the alternator, but you still couldn't have air conditioning.
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Old May 2, 2004 | 05:17 PM
  #8  
88 350 tpi formula's Avatar
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From: WI,USA
Car: 89 FORMULA 350, 91 Z28 Convertible
Engine: ls1, LB9
Transmission: t56, Auto
Axle/Gears: S60/ 3.73
I waiting for one of you a/c guys to just mount a variable displacment a/c pump under the accessories. under the air/smog pump. they are alot longer than our stock v4 a/c compressors but, are not as big round and use less hp to turn. these are found on the newer fwd gms. this would make the needed room for the twin turbo and still have the a/c
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