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LT1 brakes fit LS1 rear??

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Old Nov 7, 2010 | 12:13 PM
  #1  
FlippindaBird's Avatar
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From: The Pocono Mountains, PA
Car: 1987 Firebird, Dad bought it new
Engine: 5.7L Vortec w/ LT4 Hot cam
Transmission: 700r4 transgo shiftkit 2600 stall
Axle/Gears: 3.42 '02 SS 6 spd rear
LT1 brakes fit LS1 rear??

mods if this question has been aswered somewhere else please delete this post and direct me via pm, i did searcha nd turned up no answer, i can get a good deal on an ls1 rear without the brakes... i have a set of brakes from a 96 formula and i was wondering if they would bolt up so i could use them until i get the cash for LS1 brakes all around... thanks for anyones help
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Old Nov 7, 2010 | 01:02 PM
  #2  
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From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: LT1 brakes fit LS1 rear??

Originally Posted by FlippindaBird
i can get a good deal on an ls1 rear without the brakes... i have a set of brakes from a 96 formula and i was wondering if they would bolt up so i could use them until i get the cash for LS1 brakes all around...
With the 96 backing plates, I see no reason why the LT1 rotors/calipers wouldn't bolt up.

JamesC

Last edited by JamesC; Nov 8, 2010 at 07:23 AM.
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Old Nov 7, 2010 | 07:10 PM
  #3  
FlippindaBird's Avatar
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From: The Pocono Mountains, PA
Car: 1987 Firebird, Dad bought it new
Engine: 5.7L Vortec w/ LT4 Hot cam
Transmission: 700r4 transgo shiftkit 2600 stall
Axle/Gears: 3.42 '02 SS 6 spd rear
Re: LT1 brakes fit LS1 rear??

sorry for not being clearer james... LS1 backing plates with lt1 brakes
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Old Nov 8, 2010 | 06:40 AM
  #4  
JamesC's Avatar
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From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: LT1 brakes fit LS1 rear??

Originally Posted by FlippindaBird
sorry for not being clearer james... LS1 backing plates with lt1 brakes
The design of the backing plates, 89-97, looks nothing like the 98+, so my guess is that there'd be a fitment issue--beyond the fact that the LS1 rotors are thicker (1.25 vs. 1", IIRC) and wouldn't accept the earlier calipers.

https://www.thirdgen.org/forums/atta...89-bplate2.jpg

http://webhosting.web.com/imagelib/s...nversion%20kit

JamesC

Last edited by JamesC; Nov 8, 2010 at 07:57 AM.
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Old Nov 8, 2010 | 09:24 AM
  #5  
FlippindaBird's Avatar
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From: The Pocono Mountains, PA
Car: 1987 Firebird, Dad bought it new
Engine: 5.7L Vortec w/ LT4 Hot cam
Transmission: 700r4 transgo shiftkit 2600 stall
Axle/Gears: 3.42 '02 SS 6 spd rear
Re: LT1 brakes fit LS1 rear??

ok thanks james, i was hoping to get away with the lt1 brakes until i can afford to grab the LS1 brakes but looks like thats not the case, thanks for the info... james you know anything about engine mounts?? check this thread out for me see if you can answer my engine mount question too lol https://www.thirdgen.org/forums/engi...ock-zz4-4.html
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