It is alluminum, and IDK...I have seen aftermarket air-lockers installed in the full-size (silverado) front diffs, which are also alluminum, but they are bigger than the t-trucks.

 

how would a lock make any diffrence in the stress on the housing? the internals, ring gear and carrier and so forth sure, but the housing, it just holds all the stuff inside, it doesnt play a role in actualy moving the vehicle.

 

Well, there's gotta be a reason why you can't find any... lol

What's the size/specs and whatnot for the front diff, anyway?

 

i have found several, arb makes one i believe.

 

I forgot about ARB... lol

I think for a DD I'd rather have LSD up front, though...

 

I dont know too much about blazers but mine is a plain 98 4x4 with L35 code which is 4.3 HO I dont know if this is true it is just on my rpo codes list in glove box could it be true a 4.3 HO?Let me know any info would be appreciated ..

 

also forgot to mention it is 4 door..sorry

 

i think lockers are great espechily like arb, just turn it off when u dont need it and your set.

 

hmmm... Can't seem to see any info about an ARB locker for the s-series Blazer...

 

the local 4wheel parts said the had one for my s-15 jimmy it was an 88, they might have been lying tho.