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Buying a 3ch lt1 9inch for my 4ch ls1

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Old 07-03-2011, 08:39 PM
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Default Buying a 3ch lt1 9inch for my 4ch ls1

As the tittle states I looked at a used 9 inch today. It is in a 3 channel lt1 car and I have a 4 channel ls1 car. From what i understand all I would have to do to make it work in my car is take the backing plates off my 10 bolt and press everything onto the 9 inch and it will work just fine. i know I will lose abs/tcs but i am not too worried about that. Is it pretty much as simple as that? My buddy has a press to press the bearings back in and all that and seems to be pretty knowledgeable about everything but just making sure im not getting myself into a big mess.
Old 07-04-2011, 02:21 AM
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if you convert it to a 4 channel you keep abs and tcs. if you dont have a problem with losing those, dont waste the time swapping back plates and stuff.
Old 07-04-2011, 07:29 AM
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You have to swap backing plates or else you lose your LS1 brakes.
Old 07-04-2011, 07:44 AM
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If you take the axles and have them machined for the 4 channel reluctor rings, you can keep your ABS and TCS. Bob
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Old 07-04-2011, 09:22 AM
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Originally Posted by Bob@BruteSpeed
If you take the axles and have them machined for the 4 channel reluctor rings, you can keep your ABS and TCS. Bob
I may look into this on down the road if I see that not having abs will be an issue. I just want to make sure im not going to run into tuns of trouble and fab work trying to convert my ls stuff to go on the lt 9inch. don't want to deal with a ton of bs just to save a few bucks when i could have bought a new one. It comes with the 9inch, trutrac, 31 spline axles, 4.11, aluminum housing, bmr torque arm, and torque arm relocation bracket for $1800 just to give you an idea of what i'm up against. All of this new is about $3100 if i calculated right not including the aluminum center section (which i don't really care about)
Old 07-04-2011, 12:11 PM
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Also how well will those 31 spline axles hold up to leaving hard on a 28" slick? Its just a stock motor with a cam now but im sure i will put nitrous on it soon
Old 07-04-2011, 03:33 PM
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the 31 splines will hold up just fine with slicks.slicks act like a shock absorber,the side walls twist some.measure the dia of the 9' axle and compare to the dia of the stock 10 bolt.
Old 07-04-2011, 05:07 PM
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Originally Posted by speedfreak2685
I may look into this on down the road if I see that not having abs will be an issue. I just want to make sure im not going to run into tuns of trouble and fab work trying to convert my ls stuff to go on the lt 9inch. don't want to deal with a ton of bs just to save a few bucks when i could have bought a new one. It comes with the 9inch, trutrac, 31 spline axles, 4.11, aluminum housing, bmr torque arm, and torque arm relocation bracket for $1800 just to give you an idea of what i'm up against. All of this new is about $3100 if i calculated right not including the aluminum center section (which i don't really care about)
You could always pick up a pair of LT1 calipers, which are smaller than the LS1 calipers, and allow a wider variety of wheels to bolt on for your slicks. Sounds like you got a good deal! Bob
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Old 07-04-2011, 09:30 PM
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Originally Posted by Bob@BruteSpeed
You could always pick up a pair of LT1 calipers, which are smaller than the LS1 calipers, and allow a wider variety of wheels to bolt on for your slicks. Sounds like you got a good deal! Bob
Yeah I recon i could do that but I already have somewhat new drilled/slotted rotors and powder coated rear callipers . How are my texas speed true duals going to fit with a body mount torque arm?
Old 07-05-2011, 05:49 AM
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Originally Posted by speedfreak2685
Yeah I recon i could do that but I already have somewhat new drilled/slotted rotors and powder coated rear callipers . How are my texas speed true duals going to fit with a body mount torque arm?
Your Texas Speed duals will fit, although I can't guarantee that you won't need to modify them. I had the Texas Speed dual exhaust on my '99 Z28 with the Moser M9 fabricated rear, which comes with a torque arm and transmission crossmember. Bob
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