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Z71 Rear End installed

4.5K views 22 replies 8 participants last post by  tofast4us10  
#1 ·
Well I took out my ZQ8 rearend and put in the 4.11 out of a 4x4 Z71 today. I thought they were exactly the same until right before I put it in and double checked my measurements. It is exactly 2" longer (1" on each side). It dosen't really bother me thought I prefer it this way since I'm putting on Z71 flares) I ordered some 1" wheel spacers for the front on ebay in the mean time for the next week while I have the ZQ8 wheels on I get to sport the psudo Porsche look, at least its red! lol

Rear end works great you can definatly tell the difference with the stock size tires on. Once I get some 31's or 32's I think it will be about right. It also added about 1/2" height to the rear.

I measured a friends truck ZQ8's and Z85's have the same width.

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#5 ·
Has anyone else had this issue? I checked mine with some of our race car stuff and it's 1-1/8" out on the drivers side and 1-1/2" out on the passenger why is it uneven? Just crappy QC at GM?

O'well I like it b/c I'm going to make the front match and the passenger rear and space out the drivers to be even.
 
#8 ·
Oh ok cool. I did a search and found out that the passenger side sticking out is a problem (sorry should have done that b4 asking). I ordered a set of 1.25" wheel spacers for the front off of ebay and got a (2) 1/4" shims off of there for less than $20 to make the drivers side match, may need longer studs not sure yet.

Like I said it prefer that it sticks out I've got Z71 flares on order and was wondering how to fill them out.
 
#14 ·
only it you move it laterally and dont be smart about it. most of our beds are narrower than the cab. when i bought my truck i noticed it was flush on the pass side and inset on the driver side. so i losened the bolts and slid it over a lil. now you cant tell it was ever off
 
#21 ·
I ordered a set of 1/4" wheel spacers on ebay for less than $20 if I put them both on one side that would correct the problem but I don't think that the studs will be long enough and don't wanna change them. I'm probably going to put 1 of them on the lh side and asjust the bed just a little and see how that works.

Once I get the Z71 flares on and the front wheels spaced out I'll post some new pics. Probably do it over this coming weekend.