Indeed.

 

zuk this with .092 6bl and your 17mm wrench print method.

 

Coast looks good but I usually don't trust the coast....drive is heavy toe but depth seems about right. By the way, much better paint job there It looks like you need to maximize the backlash....010 or 012. That will try to pull the drive a little closer to center.
That pattern reminds me of a Richmond (Sportsman) gear....they want to see 010 BL or more. And, for some reason, a lot of the 488 Yukons seem to be Richmond. Is there a shiny area on the ring that says BL= 010 ?
edit......looks like 092 is a keeper.

 

Drive looks good but what's the deal with the coast?

 

The bottom one is the drive.....heavy duty toe action. But the BL is only 006. I bet 177 is stamped on the ring gear .

 

Lol, ya that's what I meant

 

will try the .010bl after i can make a tool to crush that sleeve,ufff, so hard LOL ,thanks a bunch zuk and bigblue,without you guys i wasnt able to finish my truck.

 

A tool to hold the flange? Do you have an impact gun?

 

i weld to bolt to a 1/2 pipe tube but it bend badly,cheap craftsman impact dont go thru,going to use a large ford drag link bar and weld 2 bolts and keep trying,still have to work front gears,LOL what a pain!!

 

final assy with 10bl.

 

I know it looks deep but that is the way they cut that gear. So Mandy- is that a Richmond in a Yukon box?

 

honestly,is very different from the 4.88 yukon i have seen in your pics and other posts.the pinion looks like the "short 4cyl" but have a protusion of like .200 where the bearing/shims sit. the box have yg tv6 24200.