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73-87 Chevy _ GMC Trucks => Brakes, Frame, Steering & Suspension => The Highs (Raising/Lifts) => Topic started by: 76 3+3 on January 27, 2010, 02:22:36 am

Title: 6 inch lift on 3+3
Post by: 76 3+3 on January 27, 2010, 02:22:36 am

I have a 76 3+3 GMC which was originally 2wd and now has all the running gear from a 75 3/4 ton Chevy 4wd under it. Been looking at purchasing a 6 inch lift for it. I think OE drive lines will work with a 6 inch lift...am I right or do I need to get them extended? I know one could get a 3+3 starting in 79 or 80 in 4wd and the 4wd's have the two piece rear drive lines. Anyone have any experience with the two piece rear drive line and a lift?

Now that I am thinking about it I think a 4 inch lift requires no extended drive lines.... 

Title: Re: 6 inch lift on 3+3
Post by: bryco3 on January 28, 2010, 04:01:40 pm

When I lifted my 79 k10 6 inches it needed new drive shafts. The front or rear would not even reach. With a 4 inch you could be ok without having them lengthened. Every truck is different. You'll just have to lift it and have them lengthened accordingly.

Title: Re: 6 inch lift on 3+3
Post by: 76 3+3 on January 28, 2010, 07:04:49 pm

kinda what i was thinking. i have installed a couple lifts in the past but a two piece rear driveline is something that i have not delt with nor something 30+ years old. probably just end up in a shop for the install. thx

Title: Re: 6 inch lift on 3+3
Post by: Irish_Alley on January 28, 2010, 09:19:26 pm

the thing about two piece shaft is you can drop them down 4" and make up what you lose with the 4 or 6" lift. I would get a 6" and put some fat tires in the rear make it d wheels instead  of 6

Title: Re: 6 inch lift on 3+3
Post by: Blazin on January 29, 2010, 06:13:25 pm

What the  ??? fat tires in the rear? d wheels instead of 6? Its 4x4 the tires all need to be the same size.

Title: Re: 6 inch lift on 3+3
Post by: Irish_Alley on January 30, 2010, 12:12:45 am

lol what I meant was like 18s or something in the rear in 12s in the front and I was on my palm forgot to push shift hit the d button for 4 but only got a d if that makes any sense

Title: Re: 6 inch lift on 3+3
Post by: 76 3+3 on January 30, 2010, 01:45:14 am

I was on CL last night looking for lifts and ran into a post with a guy selling a 76 3+3 4wd (which also used to be 2wd) which had a 6 inch lift and 37's on it. I sent him an email asking about the lift and weather drivelines were lengthened...he said no drive line modifications..just straight bolt on lift..no fender trimming...looked good.

Title: Re: 6 inch lift on 3+3
Post by: 76 3+3 on January 30, 2010, 01:59:43 am

Sorry...I looked at the email again and he said it would clear 37's but is currently running 35's

Title: Re: 6 inch lift on 3+3
Post by: lindsdavid on February 24, 2010, 11:38:43 pm

guys, abit OT is it easy to lift 4" of 77 3+3 2wd?  aside from converting to axel/leafsprings