first how big of tires do you want to go for sure? that will determine how much lift you need.

37s would need at least a 6" suspension lift and minor fender trimming

39s would need a 8" suspension but no trimming

there is a good amount of stuff you need to change though to go from a 6" lift to an 8" lift

the drive shafts have to be lengthen where as a 6" does not but it's recommended for hard core wheeling

t-case has to be dropped. also your pinion angles will most likely have to be adjusted.

to put it simple 6" is the highest you can go with minimal modifications

and if you are planning on 37s or 39s like swartlkk said you will not want to be running stock axles

 

Thanks a ton for the help fellas. Being as it was free and older cars are so much fun to work on, I'll probable go with the 8" and some 39s even if it involves some serious work.

 

i have the 8" from skyjacker on mine. it was right around $800 for the just the lift.

that's not including drive shaft and t-case drop.

 

The lift included EEVERYTHING? meaning the shocks, leaf springs, etc? How muck for the driveline, transfer cas drop and probably axles?

 

Is this an "OK" lift kit? im planning to get some 3/4 ton axles and 37 inch tires.
http://www.roughcountry.com/chevy_4wd_77-87_6.html
Also, are there any 37s that will fit the stock 15 inch wheels? im having a hard time finding 37x10.50r15 tires.

 

I have never liked lift blocks. I have seen a number fail and for that reason, I will only do spring lifts or body lifts.

You will want a 1-ton front axle (Dana-60) if you go to 37's. 3/4-ton trucks came with the same Dana-44 or Corp 10-bolt as the 1/2-tons did except they had 8-lug outer spindles.

As far as the tires go, you'll likely have to go with 15x10 rims and get 37x12.5r15 tires.

 

ok. thats good info. the stock rims are r15 so I guess I'm looking for 37x12.50.
what bad will come of using the stock axles with the 37s and the lift?

 

If you keep it on pavement, not much of anything. But if you expect to wheel it, 37's will start breaking things if using the 1/2-ton running gear.

 

can't wait to see this with big tires and lift

 

x2 on the blocks. even BL are on the dicey side.

if you 37s and don't beat the hell out of it you would be allright. unless you want to spend $2500 on axles. then go for it.