dually owners or dually conversion guys...have a few questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

superchevy · 12-15-2008, 07:56 PM

Hi guys. I'm seriously thinking about converting my '72 K25 into a dually. I've searched and read all the post I could find, and there's a lot of info/pics on adding the stepside fenders to my bed for the dually look, but I need some help on the actual rear-end conversion.
I currently have the stock Dana 60/leaf spring set-up. What dually rear end do I need to look for to swap in it's place? A Dana 70? A 14 bolt? Any particular year I should look for? Width differences I need to be aware of?
Any help appreciated.
Thanks, Casey.

Bus Ted Knuckle · 12-15-2008, 08:14 PM

Either one of those would be fine. I would start by locating a donor truck, probably from the 73-87 era trucks. That way you get your rear-end, springs, frontend (hubs, etc.), wheels, brakes, and all of that good stuff. They can be had pretty cheap with bad motors or rotted out bodies.

Elephanthead · 12-15-2008, 09:08 PM

The 67 I have has a very narrow rear axle, but you don't necessarily want that look. I don't know if 72s we the same.

12-15-2008, 07:56 PM	#1
superchevy Got big-block? Join Date: Jul 2000 Location: Austin, Texas Posts: 2,453	dually owners or dually conversion guys...have a few questions Hi guys. I'm seriously thinking about converting my '72 K25 into a dually. I've searched and read all the post I could find, and there's a lot of info/pics on adding the stepside fenders to my bed for the dually look, but I need some help on the actual rear-end conversion. I currently have the stock Dana 60/leaf spring set-up. What dually rear end do I need to look for to swap in it's place? A Dana 70? A 14 bolt? Any particular year I should look for? Width differences I need to be aware of? Any help appreciated. Thanks, Casey. __________________ '68 CST SWB factory 396/T400 buddy buckets, a/c, ps, pb '72 Corvette convertible 454/4spd/ac, ps, pb '73 GMC Sierra Grande short wide 454/T400 ps, pb, ac '77 K5 Blazer black on red, 350/T350/NP205 ps, pb, ac all original '78 GMC Sierra Classic short wide 454/T400 ps, pb, ac '72 GMC Sprint SP454. 1 of 38 built. '73 GMC Sprint SP454. 1 of 71 built. '75 GMC Sprint SP454. 1 of 25 built. SOLD! '72 GMC K25 4x4 468/4L80e/NP205 build thread http://67-72chevytrucks.com/vboard/s...23#post4324423 SOLD!'55 Chevy gasser 496/4spd build thread http://67-72chevytrucks.com/vboard/s...96#post4324396

12-15-2008, 08:14 PM	#2
Bus Ted Knuckle Son of a gun Join Date: Jan 2007 Location: Hot Springs, Arkansas Posts: 1,636	Re: dually owners or dually conversion guys...have a few questions Either one of those would be fine. I would start by locating a donor truck, probably from the 73-87 era trucks. That way you get your rear-end, springs, frontend (hubs, etc.), wheels, brakes, and all of that good stuff. They can be had pretty cheap with bad motors or rotted out bodies. __________________ Bill BEATERS ARE NEATER

12-15-2008, 09:08 PM	#3
Elephanthead Registered User Join Date: Nov 2008 Location: Carmel, IN Posts: 187	Re: dually owners or dually conversion guys...have a few questions The 67 I have has a very narrow rear axle, but you don't necessarily want that look. I don't know if 72s we the same.



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