Looking for 3.73 gears - The 1947 - Present Chevrolet & GMC Truck Message Board Network

trinic · 04-28-2003, 09:59 AM

I believe the truck is running 2.93 or so at the moment in the 12 bolt. I'd like to move up to 3.73 gears. A few questions..
1. What brand/make/supplier should I look for?
2. Will I need to change to a different size carrier? I'm currently running a size 3 if I'm not mistaken. Some people say I can still use the size 3 with 3.73 gears, and not have to move up to a size 4.
3. Anyone in North Texas (Dallas), that recommends a shop or an individual to do the swap at a resonable price?
Any input would be greatly appreciated.
Thanks,
T. C.

LOHRTBT · 04-28-2003, 02:33 PM

www.speedtek.com Dont know how close they are to you..... I would recommend GM Motive gears.

bpmcgee · 04-28-2003, 02:54 PM

Trinic,

I know in my 12 bolt rear I had to switch carriers going from 3.73s to 3.07s. So, by extrapolation I would say that you'll need to do the same thing.

If you are looking for a used carrier or gears, I have them available.

Brian

79BIG10 · 04-28-2003, 10:39 PM

I'm in Wylie as well and I know that speedtek does them as well as 4wheel parts on Plano Road. Also you might talk with Ryan (67SS_396) on the other board as well. He might know of a guy that can help you out. I'm wanting to do the same thing as well.

littlebubba · 04-30-2003, 01:43 AM

If you want some real useful info on this, do a websearch for STRANGE AXLES and GEARS. I believe they are now known as U.S. Gear. These people have been around a long time making gears and axles, quality is excellent and thier prices aren't too bad.

Here's the website: www.usgear.com

AirMale · 04-30-2003, 01:45 PM

They make a 3.73 gear for the #3 carrier. I think it's $20 extra.

04-28-2003, 09:59 AM	#1
trinic Registered User Join Date: Aug 2002 Location: Wide awake Wylie (North Texas) Posts: 322	Looking for 3.73 gears I believe the truck is running 2.93 or so at the moment in the 12 bolt. I'd like to move up to 3.73 gears. A few questions.. 1. What brand/make/supplier should I look for? 2. Will I need to change to a different size carrier? I'm currently running a size 3 if I'm not mistaken. Some people say I can still use the size 3 with 3.73 gears, and not have to move up to a size 4. 3. Anyone in North Texas (Dallas), that recommends a shop or an individual to do the swap at a resonable price? Any input would be greatly appreciated. Thanks, T. C.

04-28-2003, 02:33 PM	#2
LOHRTBT BeWarE tHe eViL CrAnkTOe! Join Date: Oct 2002 Location: Yukon, OK Posts: 3,605	www.speedtek.com Dont know how close they are to you..... I would recommend GM Motive gears. __________________ ~Dave~ You can call me Mike, Mike Oxlong - 1986 Chevy SWB - Stock for now - *1986 Chevy Custom SWB* *Stolen 6/26/05* - 1985 Chevy SWB SOLD - 1999 T/A Some mods www.cardomain.com/id/ramairdave AIM Screenname - Jester84

04-28-2003, 10:39 PM	#4
79BIG10 I'm back with 2nd truck! Join Date: Feb 2002 Location: Texas Posts: 3,775	I'm in Wylie as well and I know that speedtek does them as well as 4wheel parts on Plano Road. Also you might talk with Ryan (67SS_396) on the other board as well. He might know of a guy that can help you out. I'm wanting to do the same thing as well. __________________ 1979 Chevrolet Bonanza Big10 "Tootsie Roll" 1985 Chevrolet Silverado (wife's) Member of the Southern Bowties Club "Don't underestimate how sexy a fat man who drinks to excess can be." Homer Simpson

04-30-2003, 01:43 AM	#5
littlebubba Registered User Join Date: Jun 2002 Location: Clinton Twp., Michigan Posts: 323	Website If you want some real useful info on this, do a websearch for STRANGE AXLES and GEARS. I believe they are now known as U.S. Gear. These people have been around a long time making gears and axles, quality is excellent and thier prices aren't too bad. Here's the website: www.usgear.com Last edited by littlebubba; 04-30-2003 at 01:57 PM.

04-30-2003, 01:45 PM	#6
AirMale Senior Member Join Date: Jan 2003 Location: Atlantic City, NJ Posts: 1,073	They make a 3.73 gear for the #3 carrier. I think it's $20 extra. __________________ 86 SWB 9.0 LITER T-400-OD 4.11 eaton-4/5 drop Best 1/4 12.51 @112mph no traction

04-28-2003, 02:54 PM	#3
bpmcgee Registered User Join Date: Mar 2003 Location: Northern Illinois Posts: 2,181	Trinic, I know in my 12 bolt rear I had to switch carriers going from 3.73s to 3.07s. So, by extrapolation I would say that you'll need to do the same thing. If you are looking for a used carrier or gears, I have them available. Brian

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