Are all Dually's Dana 70? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

East End K5 · 05-25-2012, 09:28 AM

Hey guys, got a question. I've been doing some reading on the internet and found one interesting tidbit. A couple of threads I read stated that all Cab and Chassis rear ends were Chevy 14, and all other "wide track" Duallys were Dana 70. Is this correct? As I attempt to change my single wheel Chevy 14 rear to a Dual, it has been pretty much a maided voyage for me as I hit a wall with the single wheel drums and dually extended studs. The rim will not go in deep enough to bolt on. Which means I need a Dually Drum which is spaced wider and may not match up....I was under the impression that after a certain year, the Chevy 14 rear end was a standard, and whatever option you decided to purchase. I also figured the rear wheel and single wheel (other than cab and chassis, which we know is not as wide) were the same as well as long as the hubs and drums were swapped, just like the Dana 60 front which was way too easy.

Thx in advance....have a great weekend everybody.....

GM72K10 · 05-25-2012, 09:50 AM

"Hey guys, got a question. I've been doing some reading on the internet and found one interesting tidbit. A couple of threads I read stated that all Cab and Chassis rear ends were Chevy 14, and all other "wide track" Duallys were Dana 70. Is this correct? "

YES, I happen to have both types of trucks

ozark · 05-25-2012, 07:53 PM

I was told the dually backing plate mount location and backing plate are different than single wheel rear ends. I do know the drums and backing plates are interchangeable beween the dual wheel dana 70 and the dual wheel 14 bolt. So you will need to go with a dually conversion(wheel spacers) for the single wheel axle or find a true dual wheel axle.

05-25-2012, 09:28 AM	#1
East End K5 Registered User Join Date: Nov 2004 Location: Long Island NY Posts: 293	Are all Dually's Dana 70? Hey guys, got a question. I've been doing some reading on the internet and found one interesting tidbit. A couple of threads I read stated that all Cab and Chassis rear ends were Chevy 14, and all other "wide track" Duallys were Dana 70. Is this correct? As I attempt to change my single wheel Chevy 14 rear to a Dual, it has been pretty much a maided voyage for me as I hit a wall with the single wheel drums and dually extended studs. The rim will not go in deep enough to bolt on. Which means I need a Dually Drum which is spaced wider and may not match up....I was under the impression that after a certain year, the Chevy 14 rear end was a standard, and whatever option you decided to purchase. I also figured the rear wheel and single wheel (other than cab and chassis, which we know is not as wide) were the same as well as long as the hubs and drums were swapped, just like the Dana 60 front which was way too easy. Thx in advance....have a great weekend everybody..... __________________ I feel sorry for people who don't drink....because when they wake up in the morning, that's the best they're gonna feel all day long!---Frank Sinatra RIP [B]1972 Chevrolet K5 Blazer RIP 1986 GMC Sierra K3500 1TON, Long Box, V8350 RIP 1980 Chevy Silverado C30 Cab and Chassis, 454 TH400HD. RIP [B] 1995 Chevrolet Tahoe 2D [B]

05-25-2012, 09:50 AM	#2
GM72K10 Next! Join Date: Jan 2003 Location: Eastern Pa. Posts: 2,479	Re: Are all Dually's Dana 70? "Hey guys, got a question. I've been doing some reading on the internet and found one interesting tidbit. A couple of threads I read stated that all Cab and Chassis rear ends were Chevy 14, and all other "wide track" Duallys were Dana 70. Is this correct? " YES, I happen to have both types of trucks __________________ 86 K30 CUCV M1028A1 86 K30 CUCV M1028a2 dually 86 K30 C&C 6.2 4:56s, 4M, 11,000 gvw, ex fire truck, now lowboy dump More square bodies and CUCVs than I care to admit to 2020 Silverado K3500HD Work truck

05-25-2012, 07:53 PM	#3
ozark Registered User Join Date: Jan 2008 Location: Eureka Springs AR Posts: 179	Re: Are all Dually's Dana 70? I was told the dually backing plate mount location and backing plate are different than single wheel rear ends. I do know the drums and backing plates are interchangeable beween the dual wheel dana 70 and the dual wheel 14 bolt. So you will need to go with a dually conversion(wheel spacers) for the single wheel axle or find a true dual wheel axle.



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