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Need clarification: Considering rear LS1 disc with 4th Gen rear. Potential problems?

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Old 07-07-2003, 10:52 PM
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Need clarification: Considering rear LS1 disc with 4th Gen rear. Potential problems?

Need clarification: I'm considering swapping to rear LS1 type disc brakes from the current drums. I have a fresh 4th Gen rear from a 98 Camaro with 3.73's & Auburn posi I can swap in. Are there any potential problems with using the 4th Gen rear and LS1 rear disc brakes in a 91 RS?

I'm not aware of pitfalls with doing this based on the searchs I've done but I really have to know for sure before I spend a couple of hundred dollars on parts at Autozone.

Constructive comments & opinions are greatly appreciated.

Thanks in Advance.
Old 07-08-2003, 11:29 AM
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The only "real" problems I know of will be hooking up the emergency brake cables, you'll need to do some fab work to make up a bracket for the cables. It's been done so do a search for it. Other than that, maybe a pro valve swap but that's it...it's gonna work for ya.


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Old 07-08-2003, 11:34 AM
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and the wheel offset. the 4th gen rear is wider than a 3rdgen, so you wheels are going to stick out 2"
Old 07-08-2003, 01:36 PM
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Get some y2k vette rims. Problem solved!!
Old 07-08-2003, 01:39 PM
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i was thinking about doing this swap also, and i was wondering if anyone had pictures of their car with a 4th gen rear in it (either with the stock wheels or newer, 4th gen, ones) thanks guys
Old 07-08-2003, 02:45 PM
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You know that their is a tech article explaiing how to do this and has answers to all your questions right?

Kat
Old 07-08-2003, 11:22 PM
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Car: 91 RS/ 99 T/A/ 72 Vette/ 02 Z28
Engine: LSx/ Dart400
Transmission: M6/ M6/ TH400/ 4L60E
Axle/Gears: 4.10's / 3.08/ 2.73
I read a tech article from this board on swapping LS1 brakes onto a 3rd Gen with drum brakes with a 3rd Gen rear. Is that the article your refering too?

I hoped I might turn up a little more info on using a adjustible valve to dial the line pressure in for the rear brakes. Looks like it will be a trial and error thing.
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