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BadBowtie03 01-26-2004 02:30 PM

3/4 Ton 4x4 Duramax Questions..
Were lookin to get a new chevy pretty soon. We wanna get the 3/4 ton HD Duramax Crew Cab Chevy.. I was wondering What tires can fit under it stock? With stock Rims? What about with a 3" Body lift.. I was hopin to be able to put 33's under it with the body lift. Whats the Best Suspension lift out there for maybe a 4in lift? Is there anything I should know about these new chevys and off-roading. How good do they hold up with Bigger Tires on them? Are there any side effects with the new IFS trucks and new IFS Lifts? I was always told it messes up your geometry... Any comments on the new HD Chevy/GMC's is appreciated... [img]images/graemlins/cool.gif[/img]

u4ia4 01-26-2004 03:27 PM

Re: 3/4 Ton 4x4 Duramax Questions..
if you do elect to go the route of a body lift to fit bigger tires, pelase make sure that you support the bed braces. these add a significant amount of strength to the bed and without them the bed can collapse. also, bear in mind that you havea a heavy duty truck with a high GVWR. you will need some pretty well rated tires to match that rating. and that means a bigger price tag. just some stuff to ponder

dhcomp 01-26-2004 07:30 PM

Re: 3/4 Ton 4x4 Duramax Questions..
Peacock is right, but you can fit 285/75 16's (33's or VERY close) under there stock. Some guys put the stock wheels/tires from h2's without major mods....

In terms of wheeling, the IFS isn't the greatest, but teh 3/4ton hd is the way to go, a lot stronger than the 1/2 ton stuff. Not sure who makes lifts for those trucks, but i'd go wtih a 4" and 35's if you want to lift it. Skip teh body lift.

Good luck!

CodyZ71 01-26-2004 08:00 PM

Re: 3/4 Ton 4x4 Duramax Questions..
Body lifts do suck.. Plus you lose your bed payload...

CodyZ71 01-26-2004 08:00 PM

Re: 3/4 Ton 4x4 Duramax Questions..
Body lifts do suck.. Plus you lose your bed payload...

u4ia4 01-26-2004 09:46 PM

Re: 3/4 Ton 4x4 Duramax Questions..
you dont lose any payload if you brace the bed supports with an appropriate material. but the suck factor is still there

BadBowtie03 01-26-2004 10:08 PM

Re: 3/4 Ton 4x4 Duramax Questions..
The only thing I would be leary of is messing up my suspension parts, steering and geometry or are the lifts pretty good now a days? Also the cost factor is alot more. Anyways what are bed supports for body lifts, where do they go and how much are they? Do suspension lifts affect warranty? Also does anyone know what chevys plans are for the future and the silverado by looks or a newer truck in 05 or are they changinh anything on the diesel for 05 where as I should wait.

dhcomp 01-26-2004 10:36 PM

Re: 3/4 Ton 4x4 Duramax Questions..
I want to say there are ways to get a lift without voiding the warranty, but check with ur dealer.

As for bed supports, you just have to support the space between teh bed and frame anywhere the bed used to touch the frame before the body lift. But i would brace more to be safe. Just get some square tubing the size of the body lift and put it between teh bed floor and frame, and weld it on.

W.C. 01-26-2004 11:41 PM

Re: 3/4 Ton 4x4 Duramax Questions..
1 Attachment(s)
Here's my Duramax 2500HD, ,,,,,,,,I put on MT/R 315/75/16's (measured height is 32.5) on the stock wheels. These tire are a bit wide for 6.5 wide rims but it works, I'l be swapping to 8" wide when I get around to it. The suspension is stock other then I turn up the torsion bars 4 1/2 turns, which is a little less then 1.5" lift. This is just enough to get the front and back level. It's not enough to screw up the CV's and I didn't notice any change in suspension stiffness, it still rides very nice. You do need to have it realigned after readjusting the torsion bars. With this tire size, you also need to trim a small 1/2" corner of body on the inside fenderwell at the rocker. This can not even be seen. The front plastic, under the front bumper also needs to be trimed,,,,,,,,I just removed the whole thing,,,,I think it looks better without it.

This is basically my tow rig and not much offroad use (yet). I have a HP D60 that will be swapped in after a little more of the warranty used up.

CodyZ71 01-27-2004 01:48 AM

Re: 3/4 Ton 4x4 Duramax Questions..
Nice rig!
As of January the Duramax's now pump out 590lbs of torque as opposed to the old ones which did 520lbs of torque... The next body style will be in 2006 or so... But from the cheyanne concepts I've seen I'd stay away and go with the current ones.

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