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Headers on 5.7 TBI

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Old Mar 19, 2010 | 10:28 AM
  #1  
Cjbrown0318's Avatar
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From: Baltimore MD
Car: 88 Camaro
Engine: 5.7 350ci TBI L98
Transmission: 700R4 STB-T56
Axle/Gears: 2.73 STB-3.73
Headers on 5.7 TBI

I've looked through several different forums and its apparent that you can't install headers on a Third Gen w/o changing the Y pipe. My question was what do you have to change. I kno you have to change the 2 bolt flange to the three but what else is required? Idc about retaining the Cat because well, its straight piped till my flowmaster. And if I buy Headers and a matching Y pipe do I have to go to a shop and have it welded to where I cut the old one?
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Old Mar 19, 2010 | 12:59 PM
  #2  
MADMAXGTA's Avatar
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From: A.Z.
Car: 89 TTA
Re: Headers on 5.7 TBI

I went with flowtech shortys and ypipe,The shop made a pipe to connect to my borla,where my cats were.they welded it to the ypipe and slip fitted my borla,so only one weld was required for mine.
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Old Mar 19, 2010 | 02:02 PM
  #3  
five7kid's Avatar
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
You have three choices: 1) Buy headers that come with a y-pipe for them (y-pipes don't interchange between brands, and no 3rd gen header is made for the factory y-pipe); 2) Buy headers and have a shop modify your factory y-pipe to mate to the headers; 3) Buy headers and have a shop fabricate a new y-pipe for you.

You don't necessarily have to have a shop weld an aftermarket y-pipe to your exhaust. You can use clamps.
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Old Jan 29, 2011 | 02:04 AM
  #4  
Cjbrown0318's Avatar
Thread Starter
Junior Member
 
Joined: Mar 2010
Posts: 7
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From: Baltimore MD
Car: 88 Camaro
Engine: 5.7 350ci TBI L98
Transmission: 700R4 STB-T56
Axle/Gears: 2.73 STB-3.73
Re: Headers on 5.7 TBI

TY, I kno this is waaaaaaay late but i bought flowtechs shorty headers n y pipe package. Works great =)
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