got 37" for my lwb sierra need help

[redzook]

of course any vehicle of this calibur will need to be trailered around, you wouldnt be able to go driving it on the street.

search for similar buildups both on here and US forums, you can see how much work is involved in such a project, then if you still really want to do it, DO IT!
(but you will have to post a build up in members!)

that ute was my daily driver for a year
so no they dont have to be trailered

i just trailered if it was a comp or was goin away for the weekend cos thats wen i usually went hardest and if i did bust something it was easier just to put it on the trailer and fix at home

and chopzuki's old thing was engineered and i think the new owner got it regoed before he pulled it down

[kurtzook]

thanks for all the help guys u cant get much registered up her through adr regulations. ill look into these peoples rides and see what would work best for me ill post some pics soon of the started project

[Gwagensteve]

Why do you want 37's on a sierra? How much experience so you have with big tyred sierras? who do you drive with? It's actually not much fun having the most capable car around. (yes, really)

Yes, it is possible, I have built cars that have gone to over 35's (Q78 - about 35.5, as tall as some 37's) with reasonable clearance and suzuki running gear, running SPUA, guard cutting, bumpstop spacing and a 2" body lift, a set up that might well be enigneerable in QLD, except for the tyre size (which can't be engineered anywhere). With time, patience and some elegant driving, a suzuki diffed car can be fine with this much tyre. The problem is, unless you hang with some truly massive cars, you'll be bored pretty quick- they're super capable like this and not a good way to learn how to drive off road unless you are an amazingly talented "natural" driver.

For big rocks and abusive driving, yes, bundera, MQ patrol or 60 series landcruiser diffs are required unless you want to spend lots of money on suzuki diffs that might still break. The sierra transfer case will be fine and offers the best range of gearing for that tyre size.

Engine and gearbox is pretty much irrelevant - it's all in the gearing.

The problem is that if you go to heavier diffs, the bulk and weight they add starts to work against the capability of the car in lots of situations (pretty much anything that's not big rock)

I suggest before you start anything you spend some time with the suzuki club in your area and work out what works where you are. The stuff that works in Sydney doesn't work in Melbourne and vice versa so local knowledge is important.

Weld the back diff, fit a 2" Body lift, get some 31's and transfer gears and get out and learn how to drive off road with other guys in suzukis. THEN look at the build. You will approach things differently.

Just my 2C.

Steve.

[redzook]

a set up that might well be enigneerable in QLD, except for the tyre size (which can't be engineered anywhere).

37's can be engineered in nsw

unless it has been changed
the engineering papers i had for the old zuk listed 37''x12.5/ 15 goodyear MTR's

[Gwagensteve]

I think you'll find the NCOP will make it very difficult - to stay within the 150mm maximum overall height increase, the stock suspension height woudl cutally have to be lowered. pnly 1/2" of other lift via suspension or body lift would be permitted, as 37's are 11" taller than the stock tyre.

also, you'd have to use an axle that has been road apporoved with a 35" tyre on it factory stock or do lots of engineering work to demonstrate bearing strength etc. The obvious candidates are Landrover sailsbury's (36" stock) Even Dana 60's are hard to find with above a 32" tyre stock unless you work with OKA versions.

With this setup, even Q78's will almost touch the bonnet under articulation.

Just some thoughts.