68 3/4 ton posi rear differential maxi tract R axle - The 1947 - Present Chevrolet & GMC Truck Message Board Network

scott72 · 03-07-2011, 02:47 PM

Anyone think I would have any issues swapping this out with my current 12 bolt on my 72 3/4 ton c10?

http://67-72chevytrucks.com/vboard/s...d.php?t=450950

Looks like a good deal, but want to make sure I can use it before I commit to buy it.

Thanks for the help.

Blazer1970 · 03-07-2011, 06:35 PM

C10 is a half ton
12 bolt is a half ton axle

That axle is a Dana 60, and it should bolt into your half ton truck but it is 8 lug, not 6 lug like your 12 bolt.

scott72 · 03-07-2011, 07:28 PM

Thanks for the help. I was thinking 3/4 ton springs.

**special-K** · 03-08-2011, 08:38 AM

What do you actually have? If you have a coil spring truck then that rear will work,but you will have an 8-lug rear. Are you saying you have a '72 C/10 with 3/4t springs? In that case you have 5-lug wheels,right? If you have a C/20,which is a 3/4t truck,this axle is just for you.

scott72 · 03-08-2011, 11:43 AM

It is a C10 with coil springs, and I was told from the previous owner he put in 3/4 springs in. He was hauling trailers around with it.

Yeah, the wheels are 5x5.

Any disadvantages of running a 3/4 axle on a 1/2 ton truck besides having to get new wheels, and probably new brakes?

Posi would be nice, but want to make sure I am going in the right direction.

cdowns · 03-08-2011, 12:02 PM

i've seen posted that some of those bigger rears that replacement brake drums aren't available. i'd check into that b4 buying

Beat68CST · 03-08-2011, 01:04 PM

Quote:

Originally Posted by cdowns

i've seen posted that some of those bigger rears that replacement brake drums aren't available. i'd check into that b4 buying

Finding a drum for me wasn't too bad, found one that was damn near identical, only .020 of an inch shallower.

It did cost $160 though...

03-07-2011, 02:47 PM	#1
scott72 Registered User Join Date: Oct 2009 Location: Bayfield, CO Posts: 187	68 3/4 ton posi rear differential maxi tract R axle Anyone think I would have any issues swapping this out with my current 12 bolt on my 72 3/4 ton c10? http://67-72chevytrucks.com/vboard/s...d.php?t=450950 Looks like a good deal, but want to make sure I can use it before I commit to buy it. Thanks for the help.

03-07-2011, 06:35 PM	#2
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,510	Re: 68 3/4 ton posi rear differential maxi tract R axle C10 is a half ton 12 bolt is a half ton axle That axle is a Dana 60, and it should bolt into your half ton truck but it is 8 lug, not 6 lug like your 12 bolt. __________________ Tim

03-07-2011, 07:28 PM	#3
scott72 Registered User Join Date: Oct 2009 Location: Bayfield, CO Posts: 187	Re: 68 3/4 ton posi rear differential maxi tract R axle Thanks for the help. I was thinking 3/4 ton springs.

03-08-2011, 08:38 AM	#4
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,862	Re: 68 3/4 ton posi rear differential maxi tract R axle What do you actually have? If you have a coil spring truck then that rear will work,but you will have an 8-lug rear. Are you saying you have a '72 C/10 with 3/4t springs? In that case you have 5-lug wheels,right? If you have a C/20,which is a 3/4t truck,this axle is just for you. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

03-08-2011, 11:43 AM	#5
scott72 Registered User Join Date: Oct 2009 Location: Bayfield, CO Posts: 187	Re: 68 3/4 ton posi rear differential maxi tract R axle It is a C10 with coil springs, and I was told from the previous owner he put in 3/4 springs in. He was hauling trailers around with it. Yeah, the wheels are 5x5. Any disadvantages of running a 3/4 axle on a 1/2 ton truck besides having to get new wheels, and probably new brakes? Posi would be nice, but want to make sure I am going in the right direction.

03-08-2011, 12:02 PM	#6
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: 68 3/4 ton posi rear differential maxi tract R axle i've seen posted that some of those bigger rears that replacement brake drums aren't available. i'd check into that b4 buying __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.