i have a 89 suburban that has a 342 rear end that went out, its a 10 bolt i guy is selling a 14 bolt out of a chevy pickup 2500, they both are six lug and he says its a 342 as well as mine, will it fit cause it looks fatter than mine and will it line up to where the springs mount on?
i believe that is a c clip rear, so that you pull the bevel equipment shaft pin bolt, drop the bevel equipment shaft out, then shove the axles in, and clamp em with a c clamp to make it more suitable accessible. bypass again to the middle section, eliminate the c clips from the axles. they're going to then pull precise out. now you employ a puller rigged to pull the bearings, or what i favor to do is detect a torch and reduce the bearing being careful now to not shrink into the housing. then you definitely merely dip the recent bearing on your lube, deploy and deploy the seal(i forgot to point the seal and eliminating the diff cover, etc) besides reassemble and replenish with lube. at the same time as your there, google your clutches, heavy responsibility springs if needed, and 0.33 member service gears.
No, it won't bolt up. I've done this exact swap. The later trucks rear axles are wider, which is good, since your truck has a narrower rear axle than the front, the later truck axle will make them the same width, which looks better from the rear, if you care. :) Yes, the driveshaft will bolt up, but it will be about 1 too long. You'll need the driveshaft shortened. The spring perches are in a different location, and will need cut and re-welded to fit your truck. I can't remember if the later stuff has the springs further in or further out, but insignificant, they have to be moved either way. Also, the lugs/studs are incorrect for the factory 6 lug wheels on your suburban, if you have them. Stock is 7/16 (I think, it's small) and the later ones are 14MM. The wheels will physically fit, but the extra diameter of the lug nuts means the tapered portion doesn't actually bite into the wheel, it actually ends up clamping OVER the wheel, which is not good. Only safe solution that is feasible is drilling the holes out a slight bit. Which means your front/rear will no longer be interchangeable. It appears you can convert the front to 14MM, but there are no exact fit applications for the lug studs in the front, since they hold the rotor and hub together, and later stuff is not designed like that.
It should work but if you have a 4x4 you better make sure the gears are the same or you will find out the hard way when you put it in four wheel drive.
