LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Exhaust question on headers/catback

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Old Jun 23, 2003 | 03:18 AM
  #1  
Blue96z28's Avatar
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Exhaust question on headers/catback

I have a 96 z28w/ dual cats.....if i was to go with the mac headers/with y-pipe thats designed for the 94-95's
http://www.macperformance.com/store/...Product_ID=457
and then use a cat back thats for the 94-95's would it all line up?
Old Jun 23, 2003 | 03:28 AM
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Haskin Z28's Avatar
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what i want to know is how you managed a 13.6 at 102 with your mods
Old Jun 23, 2003 | 03:32 AM
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dunno....that was with a 1.109 60ft, just mods in sig + free mods, and holley fuel reg. and trex pump, thats it......luck i guess? how about my exhaust question guys?
Old Jun 23, 2003 | 03:34 AM
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a 1.1 60?!?!?!?!?! that must have been a nice wheel stand
Old Jun 23, 2003 | 03:37 AM
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lol sorry about, supposed to be 2.109, haha
Old Jun 23, 2003 | 02:38 PM
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sorry guys this thread kinda got whored.....but can anyone answer my question>??

basically i want to use a headers/ypipe setup from mac thats made for a 94-95, i know that it will bolt up to the motor, but will everything line up around where the cut outs for the stock cats are supposed to be because my car is a 96' and originally had 2 cat's.....? I dont plan on using it with any of the stock exhaust...i just want that much to bolt up, also, will a 94-95 cat back bolt up to it and line up with the rest of my cars stock locations?
Old Jun 23, 2003 | 03:39 PM
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The y-pipe on those headers is shorter than the dual cat y-pipe, so it won't connect directly to your catback. You'll have to either buy a new cat (made for a single cat LT1) and an s-pipe, or just have an exhaust shop make you a pipe to connect the y-pipe to the catback.
Old Jun 23, 2003 | 03:48 PM
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Here's what I'm doing with my 97. I have MAC single cat headers and y-pipe(part#MACTF94957), MAC off-road pipe(Part#MAC49395), and a Borla cat-back(94-95 single cat). The only other thing you need if you plan on running the same set-up as me is a pair of 02 simulators, everything else will line up correctly.

Hope this helps,
Tyler
Old Jun 24, 2003 | 12:56 AM
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Blue96z28's Avatar
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dude you deserve a cookie!!!!! im telling you, that was 100% and complete the answer to my question, it could'nt have possibly been more helpful, you answered all the questions i had for weeks in one sentence, seriously thanks alot man!!!

one more for ya though, is that silver paint on the mac headers/y-pipe
94-95 Single Catalytic Car Header System
Part Number: TF94957
is that High Temp coating like for headers or is it just silver paint or something? If so how long does it take to burn off? how durable is it if it is HTC?
thanks
Old Jun 24, 2003 | 01:27 AM
  #10  
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Originally posted by Haskin Z28
what i want to know is how you managed a 13.6 at 102 with your mods
That is pretty amazing especially w/ them 273's....and w/ a 2.1 60'...
Old Jun 24, 2003 | 01:47 AM
  #11  
Blue96z28's Avatar
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to be completely honest it was a 13.69@101.99, but still good and full mods listed above

anyone else have pre-96 exhaust on a 96?
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