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LS1 rear brakes.. should I go for them

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Old Dec 25, 2004 | 10:26 PM
  #1  
VILeninDM's Avatar
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LS1 rear brakes.. should I go for them

Hey guys,

I just came across a relatively cheap set of rear brakes from LS1 car. My rear end is from 96 car.

Should I buy these, or wait till I find LT1 set?

I did some searching and there are various opinions. Some said new holes (8 total) need to be drilled and then I found 88IROCARMY's thread that said they will bolt on to the housing if you use LS1 backing plates.

Sme people staying away from them, and others said they converted and could be happier. So those that converted, what is actually involved in this?
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Old Dec 26, 2004 | 12:18 AM
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From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
If you have the backing plates, rotors, calipers, then you are good to go.
If you have a drum rear, then I have no idea what is involved since I never messed with drums.

If I remember correctly, LS1 and LT1 backing plates are different and don't interchange due to the different style of e-brakes.
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Old Dec 26, 2004 | 12:30 AM
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cool, they are sold with everything including the backing plates.

So then the only question is that e-brake bracket that has to be fabbed. Does anyone have a picture of it preferably off and on the car?
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Old Dec 26, 2004 | 11:44 AM
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From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
Originally posted by VILeninDM
cool, they are sold with everything including the backing plates.

So then the only question is that e-brake bracket that has to be fabbed. Does anyone have a picture of it preferably off and on the car?
are you talking about the bracket on the rear that holds the ebrake cable? If so, that is interchangable on the rear since it uses the lower control arm bolt to hold it in.
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Old Dec 26, 2004 | 02:44 PM
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From: Elgin, IL
Car: 1997 Corvette
Engine: LS1
Transmission: 4L60E
Axle/Gears: 2.73 IRS
No, the bracket that connects the hand-brake-lever cable to the two cables that go to each drum in the back. I have to get some new brake cables cuz my uncle threw out the first set I got, and then I have to make a custom bracket.
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Old Dec 26, 2004 | 05:08 PM
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Car: '90 Trans Am-12.45@110.71
Engine: 355 w/AFR 195's Elem. 400/430 HP/TQ
Transmission: Tremec T-56
Axle/Gears: 12 Bolt 3.73
You mean this one:

Last edited by Dyno Don; Apr 20, 2009 at 03:20 PM.
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Old Dec 26, 2004 | 06:57 PM
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Don, I give you full credit for trying to help but that is the smallest picture of any bracket I've ever seen.

Otherwise, I am not sure what bracket I am talking about. I just read several ebmiller's posts where he mentioned some bracket for e-brake needs to be fabricated making LS1 brake install more complicated than LT1 brake install. Now I just want to find out what exactly needs to be done.
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Old Dec 26, 2004 | 10:20 PM
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From: Hattiesburg, MS, USA
Car: 1992 Jade Green---Trans Am Converti
Engine: LS1
Transmission: T56
I believe the axles have to be changed when going from LS1 rears to LT1 rears. Something about different lengths do to the different parking brake setup. Minor difference, but it does cause problems. Check some 4th gen sites to verify.

Kevin D.
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Old Dec 26, 2004 | 11:06 PM
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not true.

i just followed the tech article on mine. somebody told me the stock ebrake cables from a late disc model thirdgen will fit if the end is enlarged a little bit to fit the ls1 lever. i bought some, but the opposite end is different from the y cable thats on my car, and ive been too lazy to find the right one
Attached Thumbnails LS1 rear brakes.. should I go for them-dscn4631.jpg  
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Old Dec 26, 2004 | 11:19 PM
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From: Hattiesburg, MS, USA
Car: 1992 Jade Green---Trans Am Converti
Engine: LS1
Transmission: T56
So you had an LT1 disc rear and swapped it over to an LS1 disc setup no problem?

Kevin D.
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Old Dec 27, 2004 | 12:01 AM
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From: Roscoe, IL
Car: 1991 Trans Am
Engine: LQ4
Transmission: T-56
Axle/Gears: 3.70
i had the stock drum rear, reused the axles, just cut and drilled the housing end accordingly and bolted everything up. i did have the parking brake hooked up, but it was ghetto (involving some braided cable using wire clamps) and it did work, but it was def unsafe so i took it off

Last edited by KagA152; Dec 27, 2004 at 12:06 AM.
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Old Dec 29, 2004 | 12:37 AM
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Car: 86 LG4 & 92 TBI Firebird
Engine: The Mighty 305!
Transmission: 700R4
Axle/Gears: 3.42
Originally posted by VILeninDM
Don, I give you full credit for trying to help but that is the smallest picture of any bracket I've ever seen.

Otherwise, I am not sure what bracket I am talking about. I just read several ebmiller's posts where he mentioned some bracket for e-brake needs to be fabricated making LS1 brake install more complicated than LT1 brake install. Now I just want to find out what exactly needs to be done.
Def worth it putting on LS1 brakes. They have a thicker rotor and better ebrake.

I think theres a bigger picture posted somewhere of that bracket. Do a search for LS1 brakes and Dyno Don.
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Old Dec 29, 2004 | 12:42 AM
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From: Orange, Calif
Car: '87 Cam RS V6
Engine: Top Secret
Transmission: DYT700R4 custom inerts and conv.
Lokar universal cable kit and my custom fitment.
Attached Thumbnails LS1 rear brakes.. should I go for them-.jpg  
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Old Dec 29, 2004 | 12:48 AM
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From: Elgin, IL
Car: 1997 Corvette
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Nice, how much did that cost ya, and how much modifying did ya have to do?
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Old Dec 29, 2004 | 01:05 AM
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Originally posted by DuronClocker
Nice, how much did that cost ya, and how much modifying did ya have to do?
Very simple. The bracket came with the Steelbraided Lokar universal kit. It was aprox $100 for cables, brackets and clevis'es.

I then drilled through the cable connection block (center hole) to a large enough hole so the factory threaded cable end fit through it. I cut off shorter the factory cable and reinstalled the nut onto it.... whaa-laa- Clean and simple.
Attached Thumbnails LS1 rear brakes.. should I go for them-aa.jpg  
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Old Jan 2, 2005 | 07:10 PM
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That's "viola", Dean....




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