I need to know if the 1982 10 bolt posi disc rear is the same as a newer, say 91 or 92, besides the 26-28 spline change. I also would like to know if drum brake axles are the same as disc brake axles. Hopefully this makes sense... 8^) I would like to get a take off posi from SLP and an install kit, and mate them with a set of take off GM LS1 3:42 gears that I have.

http://sc3gfb.org/members/jason.html



------------------
1991 Camaro ,polished TPI, 355ci. Sportsman 11 heads, LT-4 Hot cam,Pete Jackson gear drive, on,and on, and on... 13.6 @ 102.5 with a 2:73 open rear, no traction, no tuning, no practice. Car is pictured in Chevy High Performance magazine, June 2000 issue.

1985 California Edition IROC red, polished TPI and polished wheels, otherwise completely stock 305ci. 700r4

1991 fullsize Blazer 4-wheel drive, 350,700r4, Pro Comp lift, K&N, TBI spacer, 3" Catco cat, 3" cat back Flowmaster, etc....

 

The flange end on the axle is the same from 82-92. The disk brakes themselves changed around 89 but that was only the mount, caliper and rotor size. The only thing that changed on the axles was the spline count.

If you put a 28 spline carrier in your 82 diff then yes you can just use factory 90-92 axles with no problems. Drum and disk axles are the same.

------------------
Stephen's racing page

87 IROC-Z Pro ET Bracket Race Car
383 stroker (carbed) with double hump cast iron heads and pump gas
454 Big Block buildup now in progress for the 2001 racing season

Best results before the 383 blew up
Best ET on a time slip: 11.857 altitude corrected to 11.163
Best MPH on a time slip: 117.87 altitude corrected to 126.10
Altitude corrected rear wheel HP based on power to weight ratio: 476.5
Best 60 foot: 1.662

Racing at 3500 feet elevation but most race days it's over 5000 feet density altitude!
Member of the Calgary Drag Racing Association

87 IROC bracket car, 91 454SS daily driver, 95 Homebuilt Harley

 

Aren't the flanges on the axleshafts thicker for disc brake applications? (Or thinner?) Not that it matters much, but I'm pretty sure I heard this somewhere.


------------------
-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
---Think your car could be pic of the week? Visit http://www.f-body.net for details!

 

I have a drum and disk axle in my shed. Both axles are the same. When I ordered aftermarket 28 spline axles, there's no option for disk or drum.

 

Thanks for the info! Maybe in the spring thaw I'll go measure the axles from the drum axle (covered in snow right now) and my disc axle (on my car)...


------------------
-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards
---Think your car could be pic of the week? Visit http://www.f-body.net for details!