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rustorbust03
11-22-2002, 07:27 PM
Can anybody tell me what the width from backing plate to backing plate is on s10 and if they ever put 8.5 inch ring gears in the s10 or blazer??????
ZZ4Blazer
11-22-2002, 09:58 PM
I think the 2wd is around 54\". I measured before, but I dont\' remember. That was from the wheel mouting surface on the drum to drum.



An 8.5\" won\'t fit in there. Its too small a housing.
rudedogg
11-23-2002, 06:12 AM
my hoopty has the measurements of 48\" from backing plate to backing plate.
brotherwayne
11-23-2002, 06:16 AM
i measured from drum to drum outside and got 54 1/4.mines an 84 gmc 2wd
mommasboy
11-23-2002, 11:31 AM
Mine measures 48\'\' back plate to back plate also.
rustorbust03
11-23-2002, 05:54 PM
well some have told me 48 and some have told me 54 but anyways i am trying to figure it out cause i am going to put it in a luv truck with a spool. Is there any specific truck i should look for when trying to get like a 3.50 gear???????
my454s10
11-24-2002, 02:52 AM
mine is 48in.....and they did put a 8.5in rear end in a s10...they are in the 4.3 h.o with a 5-speed...but are hard to find...
ZZ4Blazer
11-24-2002, 03:05 AM
48 is the backing plate, 54 is the mounting surface of the drums.



I know they came with 8.5\'s. It was 96-98 5 speed trucks with the HO L35 4.3 motor. It was an 8.5\" 3.08 locker only. The ZR2 offroad trucks have them too, but you\'d have to narrow one to fit it into a 1st gen truck or blazer. But he said an 8.5\" ring gear. I assumed he meant an 8.5\" diff. in the 7 1/2 housing.
IROC-S10
11-24-2002, 05:03 PM
If you\'re looking for a rearend with 3.50:1 gears go with the dodge 8 1/4 from the 92 to 96 Dakotas. As far as the width mine is 4\'1\" from the inside of the drum to the inside of the other drum. I don\'t think mine is narrowed any. Mine is an 88(was a 2.5/5 speed.) with a 7 1/2 10 bolt and an Auburn posi from a Fourth Gen Camaro SS. If you are looking for a good rearend that will fit that Luv, look at a junkyard for an old Ford Courier. Some were equipped with 9 inch rearends. They are all one leggers and highway geared but its a good start.
rustorbust03
11-24-2002, 05:14 PM
are you sure the courirers had 9 inch in them?
BrotherD
11-25-2002, 02:10 PM
I think the Couriers came with an 8inch rearend they look like a 9inch with the third member coming out of the front. I cant find my measurement sheet I have but I think that the 8.8 out of Expolorers are the same width. disc brakes and alot of them are 3.73s and 4.10 ratios.
BrotherD
11-27-2002, 02:47 PM
Found my measurements. The Exploder rear axle is 59\" from axle flange to axle flange where the rotors sit. They may work on a 4x4 or zr2
BrotherD
11-27-2002, 02:47 PM
Found my measurements. The Exploder rear axle is 59\" from axle flange to axle flange where the rotors sit. They may work on a 4x4 or zr2