I have a 1978 GMC Shortbed 4X4. I bought it partially completed from someone who lost interest. This truck had a 4" lift before the restoration started and the guy I got it from was reducing it to 2". I prefer the 2" so I'm going to stay that course. However, now there is a mix of 4" and 2" lift components on this thing. I need some help figuring out what's what:
1) It has a raised steering arm for the 4" lift. Can I still use it or do I need to get a stock steering arm?
2) The are 1" lowering blocks on the trans/tranfercase cross member. Do I need them or should they be removed?
3) Somebody screwed with the pinion angle on the rear axle and the spring perches are partially collapsed. On a 2" lift, do I need to have a 'custom' pinion angle or will stock do?
4) This truck has the 12-bolt 6-lug rear which for obvious reasons I'd like to keep, and I bought new spring perches, but I don't know how to set the proper angle. Does anybody have advice on this?
Thanks in advance,
Roy K.