8.8 Swap Parts?

Gozer442

Gozer442

Master Mechanic
Aug 9, 2016
278
158
43
Ontario, Canada
#1
Well, I'm down the rabbit hole and adding Ford parts to my Cutlass. This weekend, I picked up a 90's Fox body rear differential complete with 373 gears, all the brake hardware, and lines for $150. I'm having the 4 lug axles re-drilled for the 5 lug 4.75", but I'm unsure of some of the correct parts I'll need.

1. What's the correct lug size/thread (part#) for GM?
2. What's the flange and adapter u-joint needed to connect to my GM drive shaft?
3. What's the correct distance from the 8.8 axle's center eyelet (upper mount), to the center of the stock eyelet mount point on a G-Body? I'd like to fab the upper control arms.
4. Are spherical upper bushings mandatory on the axle?

So far, that's my grocery list. I'm fully documenting this swap, with all the costs and part numbers to put together a complete FAQ for the forum.

Thanks.
 
Longroof79

Longroof79

Geezer
Oct 14, 2008
9,418
2,555
113
Gainesville, Fl
#2
I'm guessing M12 x 1.5mm, depending on what size studs are on the front. SAE would be 1/2 x 20 if I recall correctly.
 
Gozer442

Gozer442

Master Mechanic
Aug 9, 2016
278
158
43
Ontario, Canada
#3
Thanks Jack. I might take on the stud change... looking for a drill press to use.
 
Longroof79

Longroof79

Geezer
Oct 14, 2008
9,418
2,555
113
Gainesville, Fl
#4
You're welcome, buddy,
Good luck with your endeavor. It's worth it.
 
O

oldsmobile joe

G-Body Guru
Nov 12, 2015
833
525
93
mpls
#5
Longroof79

Longroof79

Geezer
Oct 14, 2008
9,418
2,555
113
Gainesville, Fl
#6
O

oldsmobile joe

G-Body Guru
Nov 12, 2015
833
525
93
mpls
#7
Gozer442

Gozer442

Master Mechanic
Aug 9, 2016
278
158
43
Ontario, Canada
#9
Gozer442

Gozer442

Master Mechanic
Aug 9, 2016
278
158
43
Ontario, Canada
#10
...
3. What's the correct distance from the 8.8 axle's center eyelet (upper mount), to the center of the stock eyelet mount point on a G-Body? I'd like to fab the upper control arms.
...
Does anyone have a measurement?
 

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