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Looking for drop kit advice... 4/6 on NBS

20K views 1 reply 2 participants last post by  kdh  
#1 ·
First truck, looking to drop it 4/6... What's the best route? Not looking to break the bank, but don't want cheap shit! I have seen so many variations of drops, I'm not sure which is right/wrong/etc...

First off, got a new (to me) truck, 2005 Sierra 1500 SLE Crew Cab 5.3L a few weeks ago. I am wanting to drop 4/6 on some 22" replica 2014 Sierra wheels. Been hearing/seeing plenty of people using McGaughy's, Belltech, DJM, etc. What would you guys recommend for me to go with? I see the McG kit for like $630ish for everything but shocks. I have seen some people use just springs and spindles up front and just a flip kit out back for a 4/6 drop. Why do some of these kits comes with so much more parts? Like relocators, mini C notches, etc.

Also, what's the need for a two piece drive shaft I see some people talk about? Others mention to notch the cross member and you're good to go...

I tried searching but there is just so much out there! Hook me up with some info! :geek:

Here is a photo of it right after purchasing it. The step rails have since been removed...

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#2 ·
There are different ways to do it all with pluses and minuses..

I've personally used Belltech stuff on all my trucks, never had a problem. But the McG stuff looks really really well built as well. As long as you stick with a name brand you'll be fine. You do get what you pay for with stuff.. So buy cheap, get cheap. Spend more up front, and you'll never have a problem down the road. Also, some companies have slightly different ways of doing the same thing. They all for the most part work.

With the front you have a few options.. If it was my truck, I would do 2" spindles up front, lowering springs and new drop shocks. The rear is a little complicated.. You'll need a flip kit, that moves the axel from under the rear leaf pack, to the top of it. When you do that, the rear axel will get very close to the frame and will bang on the frame on small bumps. This is where the bolt in notch comes in. You cut out part of your frame out, and then mount the bolt in notch to compensate what was cut out. The shock extenders allow the shocks to remain at the correct angles. I would replace the factory shocks with drop shocks as well. Drop shocks are a little shorter then normal factory shocks, so they are not as compresses increasing the amount of travel and improving ride quality.

When you change the drive shaft angle, you can but not always get weird vibrations or shuddering at different speeds because the drive shaft is out of alignment. Most kits should come with the parts needed to correct this. Either with a transmissions mount or something else. Some trucks have a 2 piece drive shaft instead of a single, but the kit should come with the right parts for either or. You should check with the manufacture first before buying anything.

When you lower a truck that much, ride quality will definitely suffer all around. You'll need to run a 17" rim or larger because the bottom of the spindle in the front will hit the rim. Large rims + less side wall = rougher ride. But I like to say you have to give up a little comfort to the gods of cool for this sort of stuff. =) Your wheels going over bumps, will hit the inner fenders up front so keep that in mind.

Do you plan to do the work yourself?
 
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