8.8 swap

[Jkellahan92]

I’ve seen plenty of write ups on his but what is the measurements from the rotors to where you weld the perches?

[Pete M]

perches need to be 42" center hole to center hole and evenly spaced from the rotors.  I have no idea what those numbers are though for an 8.8, sorry.    I went through the same process with my 9" install.  to help make it easier I measured out a piece of 42" scrap wood and then measured off the ends.   

 

[HOrnbrod]

[Jkellahan92]

20 minutes ago, HOrnbrod said:

Thanks 

[Skorpyo]

When setting it up make sure you note that an 8.8 pinion is NOT centered. For mine I cut a 2x4 the exact distance between the caliper mounts, then I used cross bars that were 39.5 inches apart on the outer edge since I was using 2.5" perches (which you would as well) and then placed the perches on the outer edge of the cross bars resulting in 42" on center. You can probably come up with your own method, but I found that this, though a bit painstaking, worked out perfectly.

[Jkellahan92]

And what would the pinion angle be? I’ve read that it varies depending on lift. I have a 2wd so I’m keeping it stock in the rear for now. 

[Pete M]

if you're not adding lift, then I would keep the angle you have now.  

[Skorpyo]

Pinion angle is dependent on what type of driveshaft setup you have. If you're staying with a stock slip yoke setup your pinion angle should pretty much be 0*. If you convert to a double cardan where by you eliminate the slip yoke (referred to as a Slip Yoke Eliminator SYE kit) your pinion angle should be 1-2* below what the down angle is on your T-Case output. Essentially if your T-Case output is 6* down, your pinion should be around 4-5* up.

[HOrnbrod]

 

[Jkellahan92]

I only have 2.5l 2wd right now and at some point I plan to do a 4WD swap but I’d like to have 4.10 gears when I had bigger tires to get a little @$$ behind them