Need Rear Gears 3.73 and Posi - The 1947 - Present Chevrolet & GMC Truck Message Board Network

79BIG10 · 02-27-2002, 01:26 PM

Hi I'm looking for some 3.73 12 bolt gears. I can use series 3 or 4 with the right posi. I presently have 3.07 and need lower gears. I would like a Eaton Posi. Thanks!

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BRANDON
1979 CHEVROLET BONANZA BIG10
350 GM Crate Engine ZZ4,1406 Edelbrock, 1 5/8" Heddman Headers
2 1/2" Dual Exhaust with X pipe and Flowmaster 40 Series Mufflers,350 Turbo Transmission,3.07 Gears

My website for the truck.

*Fast68Chevy* · 02-27-2002, 04:22 PM

you have to use series 4 carrier with factory 3.73 gear set, im parting a 3.73 axle right now

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71 C-10, not complete

*paint is overrated

Randy- Lincoln, IL

r68c30@hotmail.com © RSS Enterprises 2000

79BIG10 · 02-27-2002, 04:49 PM

Right I know that you have to do that. If I happen to get a series 3 Eaton posi then I would have to get the thicker gears to fit it. I have the Series 3 carrier now. I just need new gears. What do you have in that 3.73 as in parts? Also how much do you want for the parts?

*Fast68Chevy* · 02-28-2002, 12:10 PM

emailed you back, these are good used, not new, parting a 3.73 12 bolt axle out

79BIG10 · 02-28-2002, 01:20 PM

Sorry I haven't received it yet. Try again cjhicks1@msn.com

**MJN** · 03-08-2002, 06:20 PM

I have a ring and pinion out of a '70 2WD 12 bolt rear. 3.73 ration and are in good shape. I don't know how many miles are on them but everything on that frame was really good yet.

**crossy** · 03-08-2002, 10:15 PM

Brandon, or anyone just so you know i have a 3 series posi in good shape that i would trade for a 4 series unit . DAVE

79BIG10 · 03-09-2002, 04:22 AM

Sounds like a good deal Dave. I'll let you know what happens after Mike Reeh and I get things figured out on his gears. His is a locker setup. I'd like to have a posi instead. But for the price I really can't pass it up.

02-27-2002, 01:26 PM	#1
79BIG10 I'm back with 2nd truck! Join Date: Feb 2002 Location: Texas Posts: 3,774	Need Rear Gears 3.73 and Posi Hi I'm looking for some 3.73 12 bolt gears. I can use series 3 or 4 with the right posi. I presently have 3.07 and need lower gears. I would like a Eaton Posi. Thanks! ------------------ BRANDON 1979 CHEVROLET BONANZA BIG10 350 GM Crate Engine ZZ4,1406 Edelbrock, 1 5/8" Heddman Headers 2 1/2" Dual Exhaust with X pipe and Flowmaster 40 Series Mufflers,350 Turbo Transmission,3.07 Gears My website for the truck. __________________ 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

02-27-2002, 04:49 PM	#3
79BIG10 I'm back with 2nd truck! Join Date: Feb 2002 Location: Texas Posts: 3,774	Right I know that you have to do that. If I happen to get a series 3 Eaton posi then I would have to get the thicker gears to fit it. I have the Series 3 carrier now. I just need new gears. What do you have in that 3.73 as in parts? Also how much do you want for the parts? __________________ 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

02-28-2002, 01:20 PM	#5
79BIG10 I'm back with 2nd truck! Join Date: Feb 2002 Location: Texas Posts: 3,774	Sorry I haven't received it yet. Try again cjhicks1@msn.com __________________ 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

03-08-2002, 06:20 PM	#6
MJN Registered User Join Date: Feb 2000 Location: Maquoketa, Ia/ Orr, Mn Posts: 3,051	I have a ring and pinion out of a '70 2WD 12 bolt rear. 3.73 ration and are in good shape. I don't know how many miles are on them but everything on that frame was really good yet. __________________ '51 South Bend Model "9A" '56 Chevy 3600 NAPCO '74 Chevy Cheyenne Super K20-restored on 37's '72 GMC Sierra Custom K2500- in progress '08 GMC Envoy Denali '12 GMC Sierra 2500HD Denali '17 GMC Yukon XL VCCA member #58596 http://www.nohrco.com

03-08-2002, 10:15 PM	#7
crossy Oh,you can't buy that new Join Date: Apr 2000 Location: Pennsville,N.J. 08070, USA Posts: 2,039	Brandon, or anyone just so you know i have a 3 series posi in good shape that i would trade for a 4 series unit . DAVE __________________ "been there, done that, ruined the T-shirt". 2007 LBZ GMC Sierra, ECSB 2006 LM7 RCSB Silverado 98 Vortec project. 94,3500,6.5L 4L80 81 SWB GMC POS finally gone 73 Pinto, stock, w/CragarSS's-eww LOTS of Cummins trucks.

02-27-2002, 04:22 PM	#2
Fast68Chevy Account Suspended Join Date: May 2000 Location: IL Posts: 0	you have to use series 4 carrier with factory 3.73 gear set, im parting a 3.73 axle right now ------------------ 71 C-10, not complete *paint is overrated Randy- Lincoln, IL r68c30@hotmail.com © RSS Enterprises 2000

02-28-2002, 12:10 PM	#4
Fast68Chevy Account Suspended Join Date: May 2000 Location: IL Posts: 0	emailed you back, these are good used, not new, parting a 3.73 12 bolt axle out

03-09-2002, 04:22 AM	#8
79BIG10 I'm back with 2nd truck! Join Date: Feb 2002 Location: Texas Posts: 3,774	Sounds like a good deal Dave. I'll let you know what happens after Mike Reeh and I get things figured out on his gears. His is a locker setup. I'd like to have a posi instead. But for the price I really can't pass it up. __________________ 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



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