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Opinions Please... Nnbs ~ Bds

bandit10

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bandit10 Enthusiast

bandit10

Posted
Posted

Hello, Newbie here..

I have some questions and need some opinions about the modifications I wish to perform on my (NNBS) 2007 1500 LT. It's a 4x4 standard cab short bed with the 5.3, automatic and towing package. Truck has auto 4x4.

 

I just purchased a BDS 6" lift and was wondering a few things.

1. Should I go with 35's or 33's? I don't want the stuffed look.

2. Will the 18x9 Moto Metal "MO951" wheels with 5.71 (+18mm) backspacing work on this truck? I don't wish to have the wheels hang out of the fenders more than say an inch and a half.

3. Will I be required to replace the gears or install some type of programmer?

4. Will the stock drive shaft be acceptable with the truck having auto 4x4?

5. Will the BDS lift allow for a level stance? Or do I need front spacers as well?

6. How can I find out what gears my truck has in it currently?

7. Does anyone have any pictures of a NNBS standard cab short bed with just a 6" lift?

Thanks for any input

brad519 Enthusiast

brad519

Posted
Posted

1. Tire size is up to you. 35's don't look stuffed with 6" BDS imo.

2. Those wheels should be fine. I have 4.7 and mine stick out about 2.5 inches so you should be good.

3. If you have 3.73 gears and 4 speed you will want to change gears with 35's.

Programmer won't help your tranny but a tune will account for bigger tires.

4. No idea

5. Yes the BDS levels it out.

6. Not sure

7. I don't

blackout07 Senior Enthusiast

blackout07

Posted
Posted

The tire size is up to you. I think a legit 33x12.50 looks good with 6" of lift and it will minimize the need for trimming. However, 35's look great too but will require minor trimming. Those wheels are the perfect offset for your truck and gears are not necessary. They help but are not something you have to do. You will want to get a tune of some sort to correct for the new tire size, and you don't need to modify the drive shaft. The lift will allow for a level stance as it is and you can check the RPO codes in your glove box to find out what gears you have. You probably have 3.73's so I think you should see RPO GT4.

ChevyTech77 Senior Enthusiast

ChevyTech77

Posted
Posted

Truck was most likely built with 3:42 gears. 3:73's were an option only, in that year. Check the RPO codes. I'd put gears in it, if I was lifting it no matter the tire size used. RPO codes GU6 = 3:42 and GT4 = 3:73.

 

35's will require trimming where 33's will not, your choice.

 

I'd program it, if it were mine.

 

Stock front propshaft will fit but will cause driveline vibrations.

 

The BDS lift and your choosen wheel offset should be good.

bandit10 Enthusiast

bandit10

Posted
  • Author
Posted

Thanks Guys!

I checked the codes in the glovebox and the only (G) codes I have are GT4 & G80. So I assume my truck has the 3:73's.

Will the truck only vibrate in "Auto four wheel" or will it vibrate in 4 high & low as well?

If I go with the 35's will the trimming consist of just minor plastic trimming? No metal fab I hope.

brad519 Enthusiast

brad519

Posted
Posted
If I go with the 35's will the trimming consist of just minor plastic trimming? No metal fab I hope.

The 35's on the rims you mentioned should only be plastic trimming. Not 100% positive on that though. I have a 4.75 back space on my wheels and I trimmed plastic and struck the rear metal of the front fender a couple of times to "bend" it out of the way. With your back space I would think just some plastic trimming but again I'm pretty much a newbie to all this stuff.

blackout07 Senior Enthusiast

blackout07

Posted
Posted
Thanks Guys!

I checked the codes in the glovebox and the only (G) codes I have are GT4 & G80. So I assume my truck has the 3:73's.

Will the truck only vibrate in "Auto four wheel" or will it vibrate in 4 high & low as well?

If I go with the 35's will the trimming consist of just minor plastic trimming? No metal fab I hope.

 

 

Yes you have 3.73's. And in the years I have had my truck lifted I have yet to experience any vibrations in the driveline nor have I read of any other than on AWD Denali's. And as far as your tires go, I wouldn't expect to trim anything other than plastic.

brad519 Enthusiast

brad519

Posted
Posted
I see the mention of a 4 and 6 speed transmission in other post, is the 6 speed a manual transmission?

The 6 speed most are referring to is an Auto Transmission.

I don't know what the manual tranny's have...5 maybe. Haven't seen one recently.

bandit10 Enthusiast

bandit10

Posted
  • Author
Posted

We started installing the lift tonight and I hope to have it finished up tomorrow. I'm gonna look like a real goob for a while sporting the stock wheels & tires, but atleast the hard part will be over.

I did find out my truck has the HD towing package, 3:73 gears and the 4 speed transmission with a cooler. I'm going to try to stick with the stock gears and just get a programmer for now.

brad519 Enthusiast

brad519

Posted
Posted

Post up some pics when you get done.

Even with the stockers.

 

Mine with the stock wheels and 275/70's

33-6.jpg

Aristone Enthusiast

Aristone

Posted
Posted

Great choice on the lift. I run 35`s and love the look and feel of the truck. I also upgraded to the bilstiens... Rides better than stock.

My truck came stock with 3:42 and im going to regear before I tune it.

Like everyone says just plastic trimming should be fine.

Just hate to see you spend that hard earned cash on 33s an later regret you didnt get 35s.

However if you off road alot maybe the 33s will suit u best

bandit10 Enthusiast

bandit10

Posted
  • Author
Posted

After getting most of the lift finished tonight I have finally made up my mind on tire size. I will be going with 35's. I think the 33's would leave just a little too much wheel well opening for my likings. I wasn't expecting the truck to look as tall as it does! You guys really need to stand by your lifted trucks when taking pictures of them. That may help newbie's like myself realize the true size of these trucks when lifted.

Will any alignment shop be able to align my truck, or will I have to take it somewhere special?

Thanks for all your help, you guys are a great!

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