Which rear end to choose?
07-19-2013, 12:21 AM
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Car: 1984 Z28
Engine: 5.0 L (Carbed)
Transmission: 5-Speed
Axle/Gears: Lazy 2 check
Which rear end to choose?
Alright so right now on my z28 I got what I beleive is 3.23 stock gears with I knwo for sure is an open differential...Now my question is that a member on this board is selling a POSI unit with 2.77 gears will that make a noticeable driving difference if I installed it on my car..?
Also there is another person who is also selling a rear end of a 2001 WS6 3.23 gears POSI, with disk brakes but my problem is that I have 15" rims and will I even have enough clearance for the disk brakes to fit?????
Also there is another person who is also selling a rear end of a 2001 WS6 3.23 gears POSI, with disk brakes but my problem is that I have 15" rims and will I even have enough clearance for the disk brakes to fit?????
07-19-2013, 06:28 AM
#2
Re: Which rear end to choose?
Alright so right now on my z28 I got what I beleive is 3.23 stock gears with I knwo for sure is an open differential...Now my question is that a member on this board is selling a POSI unit with 2.77 gears will that make a noticeable driving difference if I installed it on my car..?
JamesC
07-19-2013, 07:41 AM
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Re: Which rear end to choose?
The 2.77 is for a 9 bolt. If you have a 10 bolt then it won't fit.
Be careful when you buy a used Auburn differential. Most of the time they are either worn out or close to it. When they wear out they are scrap metal. They can not be rebuilt. The 4th gen cars used the Auburn up through '97. After that they used the Torsen, which is a much better unit.
Be careful when you buy a used Auburn differential. Most of the time they are either worn out or close to it. When they wear out they are scrap metal. They can not be rebuilt. The 4th gen cars used the Auburn up through '97. After that they used the Torsen, which is a much better unit.
07-21-2013, 07:46 PM
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Car: 1984 Z28
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Axle/Gears: Lazy 2 check
Re: Which rear end to choose?
Alright guys so mi most likely gonna go pick up that 3.23 POSI but im not sure if my 15" rims will clear the brake calipers?
07-22-2013, 06:39 PM
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Car: 88 Formula, 90 Iroc RIP, 92 RS Sold
Engine: 305 to 350
Transmission: 700r4
Axle/Gears: 10 Bolt
Re: Which rear end to choose?
its time for new rims lol
They will fit 15" ...But .. you have to grind the calipers ...no grinding then 16" or larger wheels
They will fit 15" ...But .. you have to grind the calipers ...no grinding then 16" or larger wheels
07-24-2013, 10:33 PM
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Transmission: 5-Speed
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Re: Which rear end to choose?
how much grinding we talking bout??Not enough $$ for 16 inch or bigger rims.
07-25-2013, 10:18 AM
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Car: 88 Formula, 90 Iroc RIP, 92 RS Sold
Engine: 305 to 350
Transmission: 700r4
Axle/Gears: 10 Bolt
Re: Which rear end to choose?
Im not sure you have too do that on your part as I dont know your wheels
but its not much that will make the caliper fail
the grinding will be to the top I believe theres a couple fins
but its not much that will make the caliper fail
the grinding will be to the top I believe theres a couple fins
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07-26-2013, 09:53 PM
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Car: 1984 Z28
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Transmission: 5-Speed
Axle/Gears: Lazy 2 check
Re: Which rear end to choose?
Alright so I ended up choosing the 3.23 POSI off from the WS6 I took all the grease off it, re sprayed it with black paint and now Im am trying to figure out is the brake lines and the ebrake line....do they all hook up to my existing lines?
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