'90 model Front 10 Bolt

[3MAX]

I've read in the specifications section that '90 model Blazers should have 30 spline front axles. I just want to make sure there weren't any exceptions. I've found a deal on a 30 spline locker and don't have time to pull the axle to check it.

 

[Hogback Fabrication]

There are never any guarantees with GM

VERY likely that your front end is 30 spline.