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LS1 rear brakes

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Old Sep 28, 2009 | 07:39 AM
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Default LS1 rear brakes

I'm looking to swap my rear LT1 brakes/e-brake to the LS1 setup. Does anyone have a schematic, or link to one, of the rear LS1 brake setup assembly? I'm not sure how the e-brake is setup and want to be sure I get all the needed components for the swap.
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Old Sep 28, 2009 | 09:25 AM
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FYI the LS-1's use a drum brake style parking brake which grabs the ID of the brake rotor.
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Old Sep 28, 2009 | 09:35 AM
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Thats what I thought and was one of the reasons I was looking for a drawing so I can totally understand the setup before I go any further. The rear LS1 brakes are also larger in OD than the LT1 correct?

If I am able to purcahse the calipers, rotors, e-brake assembly, and e-brake cables it should be a straight forward swap? I already am running the LS1 style backing plates on my 9inch rear, they were from a 99 camaro rear. I was unware that the LS1 and LT1 rear brakes were different at the time of my 9inch rear build.
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Old Sep 28, 2009 | 09:55 AM
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Humm, sometimes autozone has some good skematics on their website. Also the service manual for the model year is pretty good. If neither one of those works you might want to find a buddy with a 98+ car and ask if you can exam his rear brakes. Or maybe someone on here can take some pics for you...
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Old Sep 28, 2009 | 06:37 PM
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Here is a pretty good pic.
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Old Sep 28, 2009 | 07:25 PM
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Originally Posted by 97pontta
Thats what I thought and was one of the reasons I was looking for a drawing so I can totally understand the setup before I go any further. The rear LS1 brakes are also larger in OD than the LT1 correct?

If I am able to purcahse the calipers, rotors, e-brake assembly, and e-brake cables it should be a straight forward swap? I already am running the LS1 style backing plates on my 9inch rear, they were from a 99 camaro rear. I was unware that the LS1 and LT1 rear brakes were different at the time of my 9inch rear build.
If you already have the backing plates from a LS car then swapping over the calipers, rotors & E-brake cables will be a direct swap.

I did the swap a few yrs back and loved it.... just for the reason of the parking brake improvement.
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Old Sep 28, 2009 | 08:35 PM
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Originally Posted by SmokedOutZ28
If you already have the backing plates from a LS car then swapping over the calipers, rotors & E-brake cables will be a direct swap.

I did the swap a few yrs back and loved it.... just for the reason of the parking brake improvement.
Are the LT1 parking brakes really that bad??
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Old Sep 28, 2009 | 11:47 PM
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Mine were, I replaced every part on the rear braking assembly and still had the car roll down driveways and hills.

The LT1 parking brake uses the piston and pads to put extra force on the rotor to hold the car as to where the LS1 using a mini drum setup inside the rear rotor. If your Lt1 brakes need replacing then you might as well forget trying to use the parking brake cause it won't help, I replaced and adjusted everything until I decided it was time for the switch..... I also need a new rear so getting a stock LS1 10 bolt with all brakes for dirt cheap made the decision easier.
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Old Sep 29, 2009 | 06:57 AM
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Thanks for the help guys. The main reason I want to do the swap is to upgrade the parking brake. Mine has never worked correctly, I've cleaned, lubed, and put in new parts with little improvement. So instead of spending more the LT1 setup I figured upgrading to rear LS1s would be better.
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Old Sep 29, 2009 | 12:54 PM
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Hey:

I found it was cheaper to find a 98+ complete rear end assembly than to get the parts individually, then you can sell the parts left over and recoup some cash.

Dub

When In Doubt Do Without
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Old Sep 29, 2009 | 03:14 PM
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Originally Posted by 1993 z28 f1
Hey:

I found it was cheaper to find a 98+ complete rear end assembly than to get the parts individually, then you can sell the parts left over and recoup some cash.

Dub

When In Doubt Do Without

I'm finding that looks to be the easiest route, should also help with any confusion on how thing are to be assembled. Now if I can just find one locally.
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Old Sep 30, 2009 | 04:24 PM
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Originally Posted by SmokedOutZ28
Mine were, I replaced every part on the rear braking assembly and still had the car roll down driveways and hills.

The LT1 parking brake uses the piston and pads to put extra force on the rotor to hold the car as to where the LS1 using a mini drum setup inside the rear rotor. If your Lt1 brakes need replacing then you might as well forget trying to use the parking brake cause it won't help, I replaced and adjusted everything until I decided it was time for the switch..... I also need a new rear so getting a stock LS1 10 bolt with all brakes for dirt cheap made the decision easier.

Caliper parking brakes were never really a good design for the simple reason that disc brakes require a lot of pressure to hold a vehicle stationary. Drums require a lot less pressure, and have much more friction surface contact area.

However, I never realized they were as bad as you say. I've seen plenty of small cars with disc parking brake setups that seem adequate, but I suppose the increased weight of an F-body makes them much worse.
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Old Oct 3, 2009 | 09:11 AM
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Does anyone know if the 98+ Firebird/Camaro V6 cars have the same rear brakes as the LS1 cars? I'm having trouble finding the LS1 rear brakes for a decent price as salvage yards think they are worth more due to the V8 car. I don't have much trouble finding 6 Cylinder cars though.
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Old Oct 4, 2009 | 04:35 PM
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Originally Posted by 97pontta
Does anyone know if the 98+ Firebird/Camaro V6 cars have the same rear brakes as the LS1 cars? I'm having trouble finding the LS1 rear brakes for a decent price as salvage yards think they are worth more due to the V8 car. I don't have much trouble finding 6 Cylinder cars though.
98-02 F-bodies all have the same brakes regardless of engine
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Old Oct 4, 2009 | 05:20 PM
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Originally Posted by Wesmanw02
98-02 F-bodies all have the same brakes regardless of engine
Thanks, that will make my search much easier and cheaper.
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Old Oct 17, 2010 | 05:23 PM
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Originally Posted by firehawk#682


Here is a pretty good pic.
where can i find part # 51 in this pic?

It is the rubber boot around the ebrake lever. O'rielys could not find it.
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Old Oct 17, 2010 | 09:27 PM
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Scroggin dickey ------------> send John a Pm he may be able to help with GM parts
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