Question about rear Dif. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Chevy68c10 · 03-07-2006, 11:16 AM

How do I change the gears higher for the rear Dif. My truck use to be a towing truck, so it’s geared really low. I have no clue how to correct this.

**CUSTOM/10** · 03-07-2006, 11:23 AM

It would be easier to swap the complete rear end if you don't know how to set-up the gears. It takes special tools and a fare amount of time to do it correctly. If you find a complete rear with the gears you need, you could swap the whole rear in 1/2 a day. ( If it's a 4x4 you would have to do both the front & rear)

Gary

Joe67 · 03-07-2006, 11:26 AM

Easier to swap the rear end???

Just ask around and find someone local who can set the new gears in for you, it takes someone with experience to do it right.

It should run you about $125 or so to get it done, on top of the price for new gears

Bowtie67 · 03-07-2006, 12:08 PM

A couple years back I swapped out mine from 3.73 to 4.10, I didnt have a Hydraulic press to pop the pinion bearings on and off or a good dial indicator to set everything up properly so I brought the housing to a local guy and had him set it all up, cost me $150 if I had brought the truck in $250 for the labor, these guys also have plenty of shims handy which I didnt. There arent to many Differentials around here to locate spares is why I ended up swapping my gears out other wise I would have done the whole diff swap as well. New Gears about $150, Bearings about 20+ each. etc.

Chevy68c10 · 03-07-2006, 02:34 PM

This is great information, thx guys !!!!!!!!!!!!!!!!!

eagle23 · 03-07-2006, 06:50 PM

Keep us posted if you find anyone in metro Atlanta.

One guy at a trans shop quoted me $700 to overhaul the rear axle, including replacing the pinion bearing. And that's without changing the ring/pinion

I told him I'd think about it...

SSC's76 · 03-07-2006, 07:05 PM

It's a minimum of 4.5 hours to swap ring and pinion, add bearings and it goes up from there. It is not a DIY job! Have a professional do it or like mentioned swap out the entire axle for a more suitable gear ratio. Most of the time it is less expenisve to swap the whole rear end out and that is some thing someone can do with a small assorment of hand tools a jack, two jack stands and an afternoon to kill.

03-07-2006, 11:16 AM	#1
Chevy68c10 Located in Buford,Georgia Join Date: Apr 2005 Posts: 54	Question about rear Dif. How do I change the gears higher for the rear Dif. My truck use to be a towing truck, so it’s geared really low. I have no clue how to correct this.

03-07-2006, 11:23 AM	#2
CUSTOM/10 Senior Member Join Date: May 2003 Location: Sandown, NH Posts: 2,810	Re: Question about rear Dif. It would be easier to swap the complete rear end if you don't know how to set-up the gears. It takes special tools and a fare amount of time to do it correctly. If you find a complete rear with the gears you need, you could swap the whole rear in 1/2 a day. ( If it's a 4x4 you would have to do both the front & rear) Gary __________________ Gary 72 SWB 4x4 My 72 SWB Build http://67-72chevytrucks.com/vboard/s...d.php?t=259859

03-07-2006, 11:26 AM	#3
Joe67 67 is sold Join Date: Apr 2001 Location: Troy, Michigan Posts: 6,738	Re: Question about rear Dif. Easier to swap the rear end??? Just ask around and find someone local who can set the new gears in for you, it takes someone with experience to do it right. It should run you about $125 or so to get it done, on top of the price for new gears __________________ Joe - Formerly 67c10step ------------------------------- 1967 Chevy Stepside - ECE 4/6, fuelcell, 5lug - SOLD gr8lakes - My ebay auctions Click here to order forum apparel :: Click here to become a subscribing member

03-07-2006, 12:08 PM	#4
Bowtie67 Registered User Join Date: Jan 2004 Location: NH Posts: 2,266	Re: Question about rear Dif. A couple years back I swapped out mine from 3.73 to 4.10, I didnt have a Hydraulic press to pop the pinion bearings on and off or a good dial indicator to set everything up properly so I brought the housing to a local guy and had him set it all up, cost me $150 if I had brought the truck in $250 for the labor, these guys also have plenty of shims handy which I didnt. There arent to many Differentials around here to locate spares is why I ended up swapping my gears out other wise I would have done the whole diff swap as well. New Gears about $150, Bearings about 20+ each. etc. __________________ 1967 C10 - SWBSS Pro Street 427sbc, 700R4 & 4.10 Gears 1948 Chevy FleetMaster Coupe, LS1, (almost done) 1950 Chevy StyleLine Coupe 250/6 3x2 Dueces 2009 Toyota Tundra 1996 Harley RoadKing "I maybe getting old, but I can still burn rubber with the best of them" Last edited by Bowtie67; 03-07-2006 at 12:09 PM.

03-07-2006, 02:34 PM	#5
Chevy68c10 Located in Buford,Georgia Join Date: Apr 2005 Posts: 54	Re: Question about rear Dif. This is great information, thx guys !!!!!!!!!!!!!!!!!

03-07-2006, 06:50 PM	#6
eagle23 Active Member Join Date: Feb 2004 Location: Atlanta GA Posts: 174	Re: Question about rear Dif. Keep us posted if you find anyone in metro Atlanta. One guy at a trans shop quoted me $700 to overhaul the rear axle, including replacing the pinion bearing. And that's without changing the ring/pinion I told him I'd think about it...

03-07-2006, 07:05 PM	#7
SSC's76 No No Join Date: Jun 2005 Location: Pueblo Colorado Posts: 1,781	Re: Question about rear Dif. It's a minimum of 4.5 hours to swap ring and pinion, add bearings and it goes up from there. It is not a DIY job! Have a professional do it or like mentioned swap out the entire axle for a more suitable gear ratio. Most of the time it is less expenisve to swap the whole rear end out and that is some thing someone can do with a small assorment of hand tools a jack, two jack stands and an afternoon to kill. __________________ 1976 Custom Deluxe SWB Med FMB.3/4 Drop. Gen VI 454, Muncie HD 3 speed With Modified OE Hurst Shifter, 3.73 12 bolt, GMPP HO roller cam, Hooker headers, Performer intake with modified Q-jet, Accel distributor. Best 1/4 12.3 @108. Funnest run 19.84 @88 full 1/4 mile burn out. 1997 K1500 ext cab 5.7 stock except muffler



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