1/2 ton rear axle 5 lug & 6 lug interghange - The 1947 - Present Chevrolet & GMC Truck Message Board Network

wpotter · 01-11-2017, 01:23 PM

I have a 1987 1/2 2wd 5 lug truck with 2.73 gear rearend and a friend just gave me a 1/2 4wd 6 lug rearend with 3.73 gears and a gov lock. My questions is do the parts interchange between the two rearends? Can I swap axles or can I swap carrier with ring n pinion? I havent had time to measure so I'm not even sure if they are the same width. Any help would be appreciated. Thanks

barry1982 · 01-11-2017, 07:01 PM

I'm not positive about the squares..... but I know a 88-98 six lug is wider than a 5 lug. Attempted installing a 4 x 4 diff in a 2WD..... no go.

Rubble · 01-11-2017, 11:38 PM

Been about 10 years since I did it,but pretty sure all I did was swapped axles from 5 to 6 lug. I tried it with a 5 lug heavy half axle & the shafts were larger,ended up just using a regular 5 lug axle. Track width was same too.

TwoFiftyShifter · 01-12-2017, 09:36 AM

I did it. My 6 lug axles slid right into the 5 lug diff. 1 Shock mount needed to be moved.

01-11-2017, 01:23 PM	#1
wpotter Registered User Join Date: Feb 2009 Location: Adkins Texas Posts: 157	1/2 ton rear axle 5 lug & 6 lug interghange I have a 1987 1/2 2wd 5 lug truck with 2.73 gear rearend and a friend just gave me a 1/2 4wd 6 lug rearend with 3.73 gears and a gov lock. My questions is do the parts interchange between the two rearends? Can I swap axles or can I swap carrier with ring n pinion? I havent had time to measure so I'm not even sure if they are the same width. Any help would be appreciated. Thanks __________________ Never a failure, Always a lesson! 1968 Chevy SWB Fleetside ECE 4/6 327/350 1987 Chevy V20 Scottsdale 4X4 350/400 4.10 1987 Chevy Custom Deluxe SWB 305/7004R4 1991 Suburban Silverado V1500 4X4 350/700R4 2015 Chevy Crew Cab SWB (Daily Driver) 5.3

01-11-2017, 07:01 PM	#2
barry1982 Registered User Join Date: Oct 2015 Location: Waskatenau, Alberta Posts: 259	Re: 1/2 ton rear axle 5 lug & 6 lug interghange I'm not positive about the squares..... but I know a 88-98 six lug is wider than a 5 lug. Attempted installing a 4 x 4 diff in a 2WD..... no go.

01-11-2017, 11:38 PM	#3
Rubble Registered User Join Date: Feb 2012 Location: Big Valley. Alberta Posts: 674	Re: 1/2 ton rear axle 5 lug & 6 lug interghange Been about 10 years since I did it,but pretty sure all I did was swapped axles from 5 to 6 lug. I tried it with a 5 lug heavy half axle & the shafts were larger,ended up just using a regular 5 lug axle. Track width was same too. __________________ 1977 Chev C30 454/465/14ff DRW 1974 Chev C20.350/465/14ff " Rock n Roll ain't noise pollution"

01-12-2017, 09:36 AM	#4
TwoFiftyShifter Registered User Join Date: Nov 2008 Location: Gwinnett GA Posts: 1,803	Re: 1/2 ton rear axle 5 lug & 6 lug interghange I did it. My 6 lug axles slid right into the 5 lug diff. 1 Shock mount needed to be moved. __________________ 1982 K10 SWB 1987 V20 - Sold - Doh!

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