Lifted? How high can you go?

[tarussell]

Yes - all square 30 series ( that I know of ) came with rear downward u-bolts wether C, K, V or R and SRW or DRW ( D70 or 14-B ) including Cab Chassis’s - I think it was to utilize common mounting hardware across the board for the option of the rear sway bar retention extra pieces/plates on the 2WD 1-TON’s and the top retaining bar that worked on standard leaf packs as well as those with auxiliary overload leaves.

 

[1-ton]

My 1991 V3500 crew cab has roughly a 10" lift with 38" tires. It has a 1" body lift from ORD. The front has 8" Sky Jackers with a set of zero rates from ORD, and a set of home made 1/2" zero rates as well. The rear has a DIY4X shackle flip with a set of 4" blocks. It rides a little stiff with only me in it, but if I put 300 to 400 pounds worth of people, or cargo in it then it starts to ride OK. Definitely need to have cross over steering with this much lift.

 

[shady]

Easier to go that high in a crew cab.
The wheelbase helps get drivelines happy and it a lot more stable.

My crew on 5-6" and 40"s drives no different than my stock 2500hd at 85 mph.
My old K5 with 6" or maybe a couple inches more (looked taller), on 36"s was almost scary at only 70. Lol.
(Too be fair the K5 was a POS and the crew has had everything redone in the steering system.)

 

[70jimmy]

I agree with crossover, mine has a combo of items: 6 inch lift springs, zero rate, shackle flip, extended shackles. Somewhere around 8 to 10 inch total lift, fenders cut on 37's. Not a square but a few ways to increase lift.