Rear end ratio help/suggestions needed

Well after hitting a curb at 50 mph due to a dumb lady that almost T-boned me and wife I now have a bent left rear axle tube and am wanting to get some inputs and suggestions on what ratio would be best for my set up. I do mainly short drives around town and tow maybe 2 times out of the month on the freeways . I'm going to double check but I'm almost certain I have 3.23 gearing now ( yes mpg is horrible lol)

Just to add I now have 33s because I had to replace my knuckles ,ball,joints,wheel bearings ,leaf springs and the works because of this lady and they only offered a 3 inch lift spindle vs my 4 inch up front and the 35s rubbed everything after the one inch drop. This i Costing me a fortune .

Thanks And if you know someone or have one let me know

Get RPO code from glove box, should start with GU or GT

If you are lifted, and running 33s or 35s, doing mostly in town driving I would say 4.10s. If you ever plan on going 35s or larger go ahead and go 4.56s.

By the way GU5 would be 3.23 gears.

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Originally Posted by ImportThis

If you are lifted, and running 33s or 35s, doing mostly in town driving I would say 4.10s. If you ever plan on going 35s or larger go ahead and go 4.56s.

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I would go 4.30s or 4.56 for a mainly in town truck or 4.10s for a highway truck. I wouldn't hesitate on 4.56s on 35s or larger.

I have had 33's, 35's, and 37's, on 4.56, and 4.88. I have a 2wd ECSB 5.3 with intake tune and muffler. Occasionally I tow 7000# and weekly tow 4500#. Right now it's on 35's with 4.56. If I didn't tow so much I would have done 4.30's for the lower freeway RPM. I ran these gears on the 33's as well and it was nicer around town but the freeway RPM got old real fast when taking a longer trip. I have 4.10 on my Yukon with 33's and wish it had a little more but it is also totally stock.

My choice would be based on how much I tow and spend on the freeway.

Well right now I usually only tow a small enclosed 6x12 enclosed trailer with a atv ,generators ,coolers and stuff mainly for camping.on the freeways I always have to keep it in tow mode and sometimes I even have to just keep it in 3rd because the downshift is just a little much and it will not pick up or maintain speed on the slightest up hill and there's really not any in Houston .I think the 4.56 would be a little much and really dont plan on going back to 35s so I have been also thinking 4.30s .
Right now I usually get 220 mpt (miles per tank) city and that's premium fuel .

Anyone point me in a good direction to find a 4.30?

get a set of Motive's. dont use Yukon or Richmond. check Rons, or check Summit too. they got a decent price.

What trans you running?
With my 6spd and 35s i have the stock 342s and normal driving they work well.

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Originally Posted by Quik

What trans you running?
With my 6spd and 35s i have the stock 342s and normal driving they work well.

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I have the 4l60e that took 4 rebuilds to get it where it's at now and surprisingly it's holding strong . But eventually doing a 80e or selling the truck by then lol

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Originally Posted by liftedboost

I have the 4l60e that took 4 rebuilds to get it where it's at now and surprisingly it's holding strong . But eventually doing a 80e or selling the truck by then lol

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with the turbo id consider 410s if i was you

I ordered A set of 4.30's from summit (Motive Gear) and they won't ship 'till 7/17. They're on back order. Nice price though. Also got 10 or 15 Summit Bucks too.

Ok I found a rear axle off a 06 silverado ss 2wd with A locking 4.10s for a decent price and was wondering if it should be a bolt up and go?
Also I have rear drums on mine so I'm guessing it won't be that big of a deal to hook up the rear disc right? Or I'd there something I'm gonna need to do?

2wd SSS had a 14bolt with 373s and drum brakes, the awd had the 410s with a 10bolt and disks

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Originally Posted by liftedboost

Ok I found a rear axle off a 06 silverado ss 2wd with A locking 4.10s for a decent price and was wondering if it should be a bolt up and go?
Also I have rear drums on mine so I'm guessing it won't be that big of a deal to hook up the rear disc right? Or I'd there something I'm gonna need to do?

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Originally Posted by Quik

2wd SSS had a 14bolt with 373s and drum brakes, the awd had the 410s with a 10bolt and disks

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Great info and thanks! Want to be sure on what I'm getting