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Thread: other rearend gears for 2500HD?
07-31-2008, 11:39 PM #1
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- Dec 2007
other rearend gears for 2500HD?
Since I can't give my truck away, I may have to keep her.
Are there any other rearend gears made for the 2500??
I've got 4:10 do not that. I'd like to get down to 3:42ish or lower.
08-01-2008, 12:17 AM #2
Yes, there are other rear end gears. I like Randy's site layout (ringpinion.com) as far as finding what's available for you axle. You can also look at most any other vendor (like Napa, partsamerica.com, Carquest, GM dealer, or a local 4x4 shop or whatever).
Know that if you have a 4x4, you also have to change the front axle gear ratio, or convert to 2wd.'98 K1500 Suburban LS 5.7 L 4L60E NV246 ARB
'92 Ford Explorer XLT 4x4 4.0 L A4LD BW13-54 Trac-loc rear
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08-01-2008, 11:40 AM #3
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- Feb 2007
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If you change gears, your speedometer will be wrong. For the GM 10-bolt rearend that is found on most 1/2ton trucks, they make gears as low as 3.08 and as high as...I think 5.56
For the 14-bolt rearend that's probably in your truck, I think the lowest there is is 3.42s, but I think that's even a bit low for that rearend.
Last edited by Crawdaddy; 08-01-2008 at 11:49 AM.Christopher
1991 Chevy Suburban 1/2 ton 2WD w/ chevy SBC 350-3/4 ton drivetrain upgrade w/4.10 gears 199K miles
2005 Saturn ION-2 Stock 255K miles
1982 Bronco, 1993 Bronco (sold), 1971 M35A2 Deuce and a Half
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08-02-2008, 12:04 AM #4
why do you want to lower your gears?? there are many other gears for your axle, my guess is a 14 or 12 bolt. i would keep them stock the 4.10 is a good all around gear ratio to stay with unless you get bigger tiresPETE
95 GMC Sierra 2500
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08-02-2008, 08:25 AM #5
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- Mar 2007
- Grand Prairie, Texas
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Not sure of the year model truck you have, but it shouldnt matter much the axles didnt change a lot over the years. I have 3.42's in my 1997 2500 4X4 Suburban w/7.4, the gears made a big difference in the mpg, when I got it I was only getting around 12 with 4.10's now it gets avg 16 and I've gotten as good as 21 on a road trip.
Randy's Ring and Pinion is probably one of the best gear vendors around. There are many others out on the market that can be found with a google search, but most prices will be comparable. Just remember to avoid any gears manufactured in China, they've been having reliability problems for a few years.
08-04-2008, 01:33 AM #6
i would have to ask why the gear swap as well? for the same cost you can get a gear vendor splitter or doubler to keep the same gear and get another gear when you want it....mikeMichael Collins
1993 4X4 Suburban
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