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Topic Review (Newest First)
04-15-2013 03:39 PM
64nailhead
Quote:
Originally Posted by John long View Post
I have been told the Blazer is narrower but not sure if it is true.

Are you using the original carrier? If so then you need to find 26 spline axles from an 88-89 or older. I did this same conversion into a 77 last summer. Use the S10 drums and have 1/4"-3/8" taken off the brake surface inner edge to clear your stock backing plates. I changed the carrier to 28 spline due to the axles were alot beefier than the 26. If you are running a posi with any type of HP, then those 26 spline axles will be short for the world.

Good luck.


OOPS, was trying to reply to the original poster :/
04-15-2013 01:16 PM
runn141
Quote:
Originally Posted by Hogg View Post
Cool, thanks for teh reply.

peace
Hog
one thing i couldnt figure out is the rearend i got from the 2wd blazer is the same width as any other 2wd. but is offset 1 1/2 inch over to the drivers side. i would have to relocate the perch's 3/4 inch over to fix it.
04-15-2013 11:22 AM
Hogg
Quote:
Originally Posted by runn141 View Post
2000 model, i even got a 33mm front sway bar off it also.
Cool, thanks for teh reply.

peace
Hog
04-15-2013 09:36 AM
runn141
Quote:
Originally Posted by Hogg View Post
What year do you remember? According to GM that shouldnt exist. But GM has been wrong before.

peace
Hog
2000 model, i even got a 33mm front sway bar off it also.
04-15-2013 08:27 AM
Hogg
Quote:
Originally Posted by runn141 View Post
i took one from a 2wd blazer with rear discs 11.6" x .787" rotors.
What year do you remember? According to GM that shouldnt exist. But GM has been wrong before.

peace
Hog
04-14-2013 11:41 PM
triker97
S10 rear ends

Thanks guys now I know a lot more than I did going to look at one tomorrow. thanks again for all your help. Dewitt
04-12-2013 05:00 PM
runn141
Quote:
Originally Posted by Hogg View Post

Only 4wd got the rear discs 11.6" x .787" rotors , 2wd got drums 9.5" x 2" .


peace
Hog
i took one from a 2wd blazer with rear discs 11.6" x .787" rotors.
04-12-2013 12:37 PM
Hogg
Quote:
Originally Posted by matt167 View Post
Yep. All S10 ZR2's got 8.5" 10 bolts measuring 62" hub to hub. Disc brakes came in 1998 IIRC.

2wd could be special ordered with the 8.5" from '94- on, but only '98+ would have discs IIRC. They were also used in S10 Extreme's and would be std 2wd width
I wondered if the S10 Extreme's had the 8.5" as well, but werent listed as such in my GM info, or in any part# callouts.

Did all 4.3 with manual transmissions have that shock that mounted longitudinally? Its like a 3rd shock, but doesnt manage any vehicle weight, I think its there to stop wheelhop maybe.
Thanks.

I have no idea why GM wouldnt put the 8.5" rear in ALL of their F-bodies? That would have helped greatly.

peace
Hog
04-12-2013 12:06 PM
matt167 Yep. All S10 ZR2's got 8.5" 10 bolts measuring 62" hub to hub. Disc brakes came in 1998 IIRC.

2wd could be special ordered with the 8.5" from '94- on, but only '98+ would have discs IIRC. They were also used in S10 Extreme's and would be std 2wd width
04-12-2013 11:49 AM
RWENUTS You're right Hogg!
My 2005 ZR2 Blazer has discs and the 8.5 rear. It measures 62 inches. I measured it when I looked for a rear for my T modified. But my stock tire size is 265 75 R15. Maybe just a Blazer thing.
04-12-2013 11:24 AM
Hogg Didnt all the RPO ZR2 "Highrider" S10's get the 8.5" rear axle?
Looks like 98-2004 ZR2's had the 8.5 as an option at least.

Only 4wd got the rear discs 11.6" x .787" rotors , 2wd got drums 9.5" x 2" .
ZR2's had the 31"x10.50" tires and 3.73:1 gears.

I just found these, its teh SS and Highrider packages.
Super Sport (SS) Package (B4U)
The 2-wheel-drive Super Sport (SS) Pickup is made to order for performance truck enthusiasts. This "muscle truck" is built to haul more than just furniture. The SS package, which is available exclusively on Regular-Cab Short-Box S-Series Pickups, includes the following high-performance hardware:


180-hp Vortec 4300 V6 L35 engine
4-speed 4L60-E electronically controlled automatic transmission with overdrive
New ZQ8 Sport Suspension Package with 46-mm de Carbon shock absorbers, 32-mm front stabilizer bar, 22-mm rear stabilizer bar and two-stage multi-leaf rear springs
16" x 8" cast aluminum wheels
P235/55R-16 tires
Locking differential
3.42:1 rear axle ratio
Leather-wrapped steering wheel
Fog lamps
Body-color grille with halogen headlamps
Red SS emblems and Chevrolet bowtie badges
Red, black or white exterior paint
Rear bumper closeout panel (rear bumper optional)
LS trim (includes YC3).
ZR2 Performance Package

The ZR2 Performance Package is designed for serious off-roaders. This coordinated package of heavy-duty components transforms a 4-wheel-drive S-Series Pickup into one of the toughest trucks in the badlands. The ZR2 option is available on Extended-Cab and Regular-Cab models:

Front and rear track widths are 100 mm (3.9 inches) wider than the standard S-Series Pickup
Ride height is 75 mm (3.0 inches) higher
Extra-wide wheel flares
Unique front fender and pickup box outer panels to accommodate wheel flares
15" x 7" steel wheels with trim rings and black center caps (15" x 7" cast-aluminum wheels optional)
31 x 10.5/R-15 LTC on-/off-road tires
Special frame for wider track
Underbody shielding
46-mm gas-pressurized Bilstein shocks
28-mm front stabilizer bar
Rear axle track bar
3.73:1 axle ratio
Enhanced front-drive axle with 71/4" ring gear, heat-treated drive gears, and special axles
Enhanced rear axle with 81/2" ring gear, larger wheel bearings and axle shafts
Standard 180-hp LF6 or optional 190-hp L35 Vortec 4300 V6 engines
Heavy-duty 5-speed manual transmission or 4-speed 4L60-E electronically controlled automatic transmission with overdrive
Special jack for added height
Special spare tire winch
LS trim (includes YC3).

So yes, all the ZR2's got the 8.5" ring gear rearend. Same rear as the fullsize trucks and the GNX Grand national.

peace
Hog
04-11-2013 07:36 PM
runn141 or you could use this but you wont have an E brake.
Day Motor Sports - 7.5 GM DISC BRAKE KIT - BK-0005
04-11-2013 07:32 PM
runn141 most 98 up 2wd and 4wd blazers had them and some extremes did too.
04-11-2013 06:28 PM
tresi
Quote:
Originally Posted by matt167 View Post
2wd 8.5" did, but that is a needle in a haystack
Any idea what years, with what options had an 8.5 rear end?
04-11-2013 12:59 PM
matt167
Quote:
Originally Posted by RWENUTS View Post
2wd's are 54 inches.
4wd's are 58 inches.
4wd ZR2's are 62 inches.
All measured wheel mount to wheel mount.
IIRC no 2wd's had rear discs.
2wd 8.5" did, but that is a needle in a haystack
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