How to id a rear end?

[justin12234]

My dads friend is selling his 95 z71 and he decided to swap his wheels and tires for mine plus a marlin .22. While we were swapping tires we realized my rear end is different than his. I wasnt able to look at his rpo codes but mine says its posi 3.42's. Is there a way i can tell if it is the original rear end without having to open the rear end? My hub and rear end is nothing compared to his.

 

[dirtyhick42]

He prolly has the 14 bolt sf. And you prolly have the 10 bolt. His will have rpo f44 I think is what it is.
You could always do the easy thing and count the bolts that hold the dif cover on.

 

[justin12234]

I just wanted to make sure its the same gear ratio because ive heard that if the gears are different between the front and rear that it could mess up the tranny

 

[dirtyhick42]

If you have put it in 4wd before before and your 4wd still works then your gears match. It's also more so your transfer case that is gonna go boom if you have different ratios.

 

[justin12234]

The 4wd doesnt work because the solenoid is messed up. The previous owner said it works but he had to ground it for it to engage.