i have an 85 chevy 3/4 ton and wanna run 1 tons (im running 42‘s). are they bolt in? do i have to move the perches? shock mounts? ill bbe running crossover steering and 4 88 gears also
It isn't bolt in, you will have to remove the perches. Or leave them there if room permits you to just weld another set on. The one ton had it's perches moved in or out, I can't remember. You should also look at your driveline, maybe the U-joint will be the same, maybe it won't. A good parts store can come up with a swap U-joint that will fit it. It isn't a hard swao, just time consuming. Make sure while you are in there welding and what not to set your pinion angle correctly. You probably already know that though.
Yeah the last guy about covered it. leave your rear axle in (that is if its already a 14bolt full floater) the dana 60 front is a direct bolt in. shock mounts are the same, spring perches are the same. the ujoint from the front driveshaft is the same. the only thing that is gonna be different is the spring plates that the ubolts go through are bigger. so try to get those with the axle. if not you can find them on OKorder. also need 3 new ubolts and 2 bolts for the studded side. its pretty easy swap. the brake lines going to the calipers are different too. but they will hook up to your metal lines no problem
The rear axle is the same (14-bolt full-floater). All you need is the D60 front axle. I'm 95% sure the spring perches will line up on the D60 front. Shock mounts shouldn't be an issue. Even if you found a DRW front axle and converted it to a SRW, the pad widths are the same. The difference would be in the years, but 73-87 axle should bolt right up. I'm 50/50 on the yoke being a different size and requiring a conversion u-joint.
