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Discussion Starter #1
I haven't checked my build sheet but i'm positive that i have the 3.42 set up and i'm sick of constantly having to down shift 2 gears to comfortably get up hills. I was wondering if anyone who has a 4cyl and 5 spd has swapped out their gears and how much did it cost? I'm considering the 4.10's.
 

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ChevTech06 said:
I haven't checked my build sheet but i'm positive that i have the 3.42 set up and i'm sick of constantly having to down shift 2 gears to comfortably get up hills. I was wondering if anyone who has a 4cyl and 5 spd has swapped out their gears and how much did it cost? I'm considering the 4.10's.
I'll install 4.10's for $750.
 

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XHR -- I haven't looked into it with the local shops, and maybe others here can chime in, but how much would you expect shops to typically charge for the swap? I'm interested in it, but not sure what places up here would charge...
 

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Discussion Starter #4
Well, i'm not so sure that you can just change the ring and pinion and be ok. I think that the 4.10's come in a bigger axle housing. In the Service manual it lists repair options for the 8.0/8.6 axles under colorado's and they only have 3 choices of final drive. being that i have 3.42's and want to go to 4.10's i would probably have to find axle housing's with 4.10's in them in a junkyard and swap them in. Plus i have a 4wd and would have to do the front as well. I might just chip my truck instead of all this hassle.
 

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Discussion Starter #6
XHRcustoms said:
Don't worry, they all interchange. I went fron 3.42 to 4.10 with the same carrier.
GM parts? How much?
 

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hmmbagodden said:
XHR -- I haven't looked into it with the local shops, and maybe others here can chime in, but how much would you expect shops to typically charge for the swap? I'm interested in it, but not sure what places up here would charge...

The job is mostly labor, so it's really up to what there labor rate is.
 

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XHR,

How much would you charge to change a 4x4 to 4.10. Z85?
 

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Discussion Starter #10
XHRcustoms said:
I bought mine off of drivetrainspecialists.com. They were like $250 plus shipping.
We have a 8.0 inch right? Do you have a 4wd? I was planning on changing my front and rear R&P's.
 

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The 4x4's use a 7.6" front diff and the 8" rear...same as the H3, according to AAM, the makers of our diffs.

See below for some info I got from AAM.com, the manufacturers of our diffs, for those interested.

I have no idea on costs....I believe you must go through a distributor to purchase these....go to aam.com to locate distributors. My guess is that other aftermarket R&P's would be cheaper, but don't really know. I'm looking at upgrading from 3:73's to 4:10's on my 4X4...but may be too expensive for it to become reality.

AAM 800 Rear Differential (2WD/4WD) Colo/Canyon

74011438 12471429 1 ST 2004+
RING GEAR & PINION SET (4.10 RATIO; 2 CUT)

74011437 12471428 1 ST 2004+
RING GEAR & PINION SET (3.73 RATIO; 2 CUT)

AAM 760 Front Differential (4WD) Colo/Canyon/H3

74010972 10360972 1 H3 4WD 2006+
RING GEAR & PINION SET (4.56 RATIO; 2 CUT)


74010431 12479240 1 4WD 2004+
RING GEAR & PINION SET (4.10 RATIO; 2 CUT)

74010428 12479238 1 4WD 2004+
RING GEAR & PINION SET (3.73 RATIO; 2 CUT)

Stevo
 

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Discussion Starter #13
StevoZ71 said:
The 4x4's use a 7.6" front diff and the 8" rear...same as the H3, according to AAM, the makers of our diffs.


AAM 800 Rear Differential (2WD/4WD) Colo/Canyon

74011438 12471429 1 ST 2004+
RING GEAR & PINION SET (4.10 RATIO; 2 CUT)
GM P/N #12471434 GMPARTSDIRECT.COM PRICE 539.00


74011437 12471428 1 ST 2004+
RING GEAR & PINION SET (3.73 RATIO; 2 CUT)
GM P/N# 12471433 GMPARTSDIRECT.COM PRICE 215.00

AAM 760 Front Differential (4WD) Colo/Canyon/H3

74010972 10360972 1 H3 4WD 2006+
RING GEAR & PINION SET (4.56 RATIO; 2 CUT)

74010431 12479240 1 4WD 2004+
RING GEAR & PINION SET (4.10 RATIO; 2 CUT)
GM P/N 12479241 GMPARTSDIRECT.COM PRICE 207.00

74010428 12479238 1 4WD 2004+
RING GEAR & PINION SET (3.73 RATIO; 2 CUT)
GM P/N 12479239 GMPARTSDIRECT.COM PRICE 262.00

Stevo
GM part numbers should be accurate and they came up as good numbers on gmpartsdirect.com. I took the time to look up the prices for everyone.
 

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Thanks for the links and pricing, guys.

XHR....how many hours do you think I'd be looking at for a shop to do both fr/rr gear changes?

Stevo
 

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Has anyone tried the front H3 gears in the front of our trucks yet??
 

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I found on gmpartsdirect.com website the front ring and pinion for 303.32.. but doesnt say 4.56 are they all 4.56.....

thanks
 
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