yes i have a 93 s 10 blazer 4x4,an the spider gears are busted,i found a whole new carrier with gears an all,but it is for a 94 s 10,will it fit in my rear end an bolt up

 

I wouldn't see why not but I'm not an expert at this stuff.

 

If you're using the rear axle housing you don't have to worry about spline count. If you're just using the carrier to put in your existing housing, then you have to find out what the new carrier will accept. Your two options are 26 splines or 28 splines. I forgot what year they switched but LMC and all my other sources aren't really clear. IIRC there was no change between 93 and 94 as far as spline count.