Anyone know what this is?
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Car: 89 IROC Z/88 IROC Vert
Engine: 350c.i./305c.i.
Transmission: 700R4/T-56
Axle/Gears: 3.42/4.10
Anyone know what this is?
I bought this because I was told it was an auburn 10 bolt 7.5 posi for 28 spline axles, but after running the #'s off of it I've been unable to match it to anything. The #'s i've found are # 71189 and a # that has been etched in by hand reads 8J97-59A. In the first pick there's a casting mark right below the bearing that looks like a P inside a D. The mark down and to the right from that one is a C or G. Thanks.
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Car: 89 IROC Z/88 IROC Vert
Engine: 350c.i./305c.i.
Transmission: 700R4/T-56
Axle/Gears: 3.42/4.10
Re: Anyone know what this is?
Yeah,I can't visually match it to anything in the auburn product line.
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Car: 89 IROC Z/88 IROC Vert
Engine: 350c.i./305c.i.
Transmission: 700R4/T-56
Axle/Gears: 3.42/4.10
Re: Anyone know what this is?
After hours of browsing summit it looks like it's a Detroit locker but I still can't get a hit on the part numbers. Any way to tell if it's a 7.5 28 spline posi? Take a look at the link and let me know if it looks like a match to you.
http://www.summitracing.com/parts/DTL-162C59A/
http://www.summitracing.com/parts/DTL-162C58A/?rtype=10
http://www.summitracing.com/parts/DTL-162C59A/
http://www.summitracing.com/parts/DTL-162C58A/?rtype=10
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Car: 89 IROC Z/88 IROC Vert
Engine: 350c.i./305c.i.
Transmission: 700R4/T-56
Axle/Gears: 3.42/4.10
Re: Anyone know what this is?
Okay, so i counted the splines 3 times just to be sure and I came up with 28. So far I believe I have a 10 bolt 28 spline Detroit locker. I still don't know if it's for a 7.5 and i have no idea how to determine that. Anyone know how? Thanks for the help so far!
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Car: 89 IROC Z/88 IROC Vert
Engine: 350c.i./305c.i.
Transmission: 700R4/T-56
Axle/Gears: 3.42/4.10
Re: Anyone know what this is?
I called Eaton and they confirmed that it's a 7.5 10 bolt 28 spline Detroit locker for Gm 3.23 and up. I'm pretty excited seeing as I only paid $190 for it, a 87-94 4 bolt main roller shortblock, and a 400 crank. Now I have a new question. I want to put this in my 89 Iroc which was equipped with a 305 TPI and a 700R4. I'm pretty sure it has an open rear with a 2.73 gear in it. I know I need a set of Moser 28 spline axles and i'm swapping to a 3.73, but what else do I need for this swap? Thanks.
Last edited by jas2730; 05-21-2012 at 09:05 AM.
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Car: 89 IROC Z/88 IROC Vert
Engine: 350c.i./305c.i.
Transmission: 700R4/T-56
Axle/Gears: 3.42/4.10
Re: Anyone know what this is?
No, I meant what else do I need for the rear end swap?
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Car: 91 Firebird,00 c2500,75 Vette
Engine: 3.1 but 350 soon, 350, 350
Transmission: T56 soon
Axle/Gears: stock 3.42 Posi to come
Re: Anyone know what this is?
When you order the ring and pinion for the 3:73 gears you will also need to order an installation kit for the bearings, shims, crush sleeve, etc.
I believe with the axles you will need new axle bearings and seals. Even if you do not need them I would put new in anyways while doing that much work.
What are you doing for rear brakes? Is your current diff a 9 or a 10 bolt? If it is a 9 bolt then that carrier will not fit. I am assuming that you have already checked and know that you have a 10 bolt.
I believe with the axles you will need new axle bearings and seals. Even if you do not need them I would put new in anyways while doing that much work.
What are you doing for rear brakes? Is your current diff a 9 or a 10 bolt? If it is a 9 bolt then that carrier will not fit. I am assuming that you have already checked and know that you have a 10 bolt.
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Car: 89 IROC Z/88 IROC Vert
Engine: 350c.i./305c.i.
Transmission: 700R4/T-56
Axle/Gears: 3.42/4.10
Re: Anyone know what this is?
When you order the ring and pinion for the 3:73 gears you will also need to order an installation kit for the bearings, shims, crush sleeve, etc.
I believe with the axles you will need new axle bearings and seals. Even if you do not need them I would put new in anyways while doing that much work.
What are you doing for rear brakes? Is your current diff a 9 or a 10 bolt? If it is a 9 bolt then that carrier will not fit. I am assuming that you have already checked and know that you have a 10 bolt.
I believe with the axles you will need new axle bearings and seals. Even if you do not need them I would put new in anyways while doing that much work.
What are you doing for rear brakes? Is your current diff a 9 or a 10 bolt? If it is a 9 bolt then that carrier will not fit. I am assuming that you have already checked and know that you have a 10 bolt.