what rearend is in an 04 crewcab, 5.3, 4l60e

 

bump...... anyone??? Ive searched all over the site

 

just the plain old newer style 8.5 i thought. same rear from late 80's to present, unless its the HD like 1 ton etc. i could be wrong but im pretty sure they are all the same.

i grabbed a ;ocker out of the junk yard ot of like an 89 truck to put in my 99 gmc sierra. i was told the only differance between the older and newer is the spline count. and of course the width might diff between some housings (like from blazer to k series etc).

 

It's a 30 spline 8.625" 10 bolt. Same ring gear size as older 8.5" rear ends, but the spline count is indeed different and the bearings are different as well.

 

thanks just what I needed, just ordered a the true trac.......... I appreciate it 00ChevyScott

 

leon piper is fukd....the 99+ 10 bolts get bigger carrier bearings... unless you have a 88-98 box body......i understand that the box body ran into 99 also.......they all share the same size ring gear tho

 

they share the same spline count too