what do i have?
 

well i am looking for a spool for my blazer, it is a 91 2dr 4wd with a 4.3 in it. i need to know what rearend i have and also what front i have. do they make a spool for the front? im thinking about welding the front and rear diffs up, but since i see spools are like 85 bucks, i would go that route instead. this truck is a 100% offroad truck only, so spools or being welded it will be fine :D

RE: what do i have?
 

You can probably install a mini spool to save a few bucks. Weld the side/spider gears like you said. Drop in a lunch box locker for the front.

RE: what do i have?
 

yeah, you posted that in my other topic, but i was looking for what rearend does it have? like on my ranger i have an 8.8" rearend. im looking for a mini spool but dont know what diff to look for.

RE: what do i have?
 

Should be a 7.65" rear axle. Whereever you go to buy the spool, will be able to verify the axle.
Let me know what a spool costs. I want one for my rear axle in the '87.

RE: what do i have?
 

Ahhhh. .OK, you didn't specify, inches or gear ratio.

I have a 7.625" (7 & 5/8") rear end, 7.25" up in the front. Not sure if they changed the size over the years.

RE: what do i have?
 

sorry for not being more specific from the get go. thanks for the help guys im gunna check around for a spool and what not. if i find a spool that fits a GM 7.25" would it matter if it is in the front or rear? did GM ever put a 7.25 in the rear? the more i think about it, im not gunna do that to the front of this truck, especially not yet....may cause to much problems with the turning....

RE: what do i have?
 

the closest i can find on summit is a GM 7.5" [&o]

after more looking, some sites say the 7.5" spool will fit the 7.625" rear. others dont say....anyone know?

RE: what do i have?
 

I think they're the same. I looked up some info on it and here's what I found.
Do you have IFS?

Vehicle Model Year
S-SERIES PICKUP, & BLAZER 79 & UP


(OEM) GM 7.25" FRONT RING & PINIONS
TEETH RATIO

40-13 3.08
41-12 3.42
41-11 3.73
41-10 4.10

GM 7.5" & 7.625" RING & PINIONS (rear)
TEETH RATIO

OE 41-15 2.73
T/L 40-13 3.08
OE 40-13 3.08
OE 42-13 3.23
OE 41-12 3.42
T/L 41-12 3.42

Try here for rear end stuff.
http://www.wayfindersband.com/powertrax.html

RE: what do i have?
 

yeah, i have the torsion bar suspension. i have the no-slip in my 2wd ranger and ABSOLUTELY LOVE it. it is awesome onroad and especially offroad, maybe ppl have thought i was 4wd when im only a 2wheeler, lol. as for that link. i see a powertrax for 99.99, but how do i get more info on it? there isnt a link anywhere, that i see atleast...

RE: what do i have?
 

Here ya go....

They claim their LockRight is a little noisier than the powertrax. The lockright is about 95.00 cheaper. Whats nice you don't have to mess w/ pinion/ring gear backlash. It's a drop in and play.