Building a dually...got some questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

spudz · 12-15-2008, 04:24 AM

Ok I have a 84 1/2 ton 4x4 that use to be a diesel. I sold the 6.2 for what I paid for the truck. I am going to rebuild the 700r4 and beef it up. Install the gas tanks, wiring and TBI motor from a 87 parts truck I have. I also have a complete 77 chevy 4x4 3/4 rolling chassis. What I want is a 4x4 dually. Can I use the axles from the 77 chassis or is the rear narrower? If so what can I get the rear from? Is the front axle different as well or is it just in the rotor?? AS for the bed.. my bed is decent.. Is there a way to convert my bed to a dually bed?? Is it as simple as drilling some holes and bolting the dually fenders on?

**Captkaos** · 12-15-2008, 01:49 PM

The axles are the difference in dually vs single. Is the 77 a dually 4x4, if you swap both axles.

spudz · 12-15-2008, 02:08 PM

no the 77 is not a dually.. Whats the difference in the front axle between a dually and single wheel? Is a dually rear a bolt in thing??? can I convert my bed by just bolting on some fenders??

**Captkaos** · 12-15-2008, 02:24 PM

Front is the same (short of lugs) you really want to get the axles in pairs so they are geared the same.

A dually rear should bolt up to the truck the cab/chassis trucks have narrower mounting.

*Stitch* · 12-15-2008, 08:01 PM

the front requires different hubs...the rear is shorter, but you could take the rear you have and shorten the axle tubes and put dually axles in it...

Chuck.

kainzien · 12-15-2008, 08:21 PM

You will need dually hubs for the frontand buy a dually rear or buy dually adapters which are basically spacers to run the dually wheels. And yes the fenders will just bolt on, but you may need to cut out your fender wells also..

12-15-2008, 04:24 AM	#1
spudz Registered User Join Date: Oct 2005 Location: Branchville SC Posts: 1,647	Building a dually...got some questions Ok I have a 84 1/2 ton 4x4 that use to be a diesel. I sold the 6.2 for what I paid for the truck. I am going to rebuild the 700r4 and beef it up. Install the gas tanks, wiring and TBI motor from a 87 parts truck I have. I also have a complete 77 chevy 4x4 3/4 rolling chassis. What I want is a 4x4 dually. Can I use the axles from the 77 chassis or is the rear narrower? If so what can I get the rear from? Is the front axle different as well or is it just in the rotor?? AS for the bed.. my bed is decent.. Is there a way to convert my bed to a dually bed?? Is it as simple as drilling some holes and bolting the dually fenders on? __________________ 2004 z71, 96 z71 on 38s, 88 Chevy k5 blazer, 4in lift. 84 swb project, 82 SWB project , 84 chevy 4x4 lwb project, 88 Jimmy beater/highschool ride. 79 c30. 99 tahoe 4x4 project. and a bunch of parts trucks..

12-15-2008, 01:49 PM	#2
Captkaos www.73-87chevytrucks.com Join Date: Dec 1999 Location: Birmingham, AL Posts: 6,935	Re: Building a dually...got some questions The axles are the difference in dually vs single. Is the 77 a dually 4x4, if you swap both axles. __________________ Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com

12-15-2008, 02:08 PM	#3
spudz Registered User Join Date: Oct 2005 Location: Branchville SC Posts: 1,647	Re: Building a dually...got some questions no the 77 is not a dually.. Whats the difference in the front axle between a dually and single wheel? Is a dually rear a bolt in thing??? can I convert my bed by just bolting on some fenders?? __________________ 2004 z71, 96 z71 on 38s, 88 Chevy k5 blazer, 4in lift. 84 swb project, 82 SWB project , 84 chevy 4x4 lwb project, 88 Jimmy beater/highschool ride. 79 c30. 99 tahoe 4x4 project. and a bunch of parts trucks..

12-15-2008, 02:24 PM	#4
Captkaos www.73-87chevytrucks.com Join Date: Dec 1999 Location: Birmingham, AL Posts: 6,935	Re: Building a dually...got some questions Front is the same (short of lugs) you really want to get the axles in pairs so they are geared the same. A dually rear should bolt up to the truck the cab/chassis trucks have narrower mounting. __________________ Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com

12-15-2008, 08:01 PM	#5
Stitch Account Suspended Join Date: Jul 2008 Location: Where I come from, it's cornbread and chicken... Posts: 3,122	Re: Building a dually...got some questions the front requires different hubs...the rear is shorter, but you could take the rear you have and shorten the axle tubes and put dually axles in it... Chuck.

12-15-2008, 08:21 PM	#6
kainzien Registered User Join Date: Apr 2006 Location: Texas Posts: 93	Re: Building a dually...got some questions You will need dually hubs for the frontand buy a dually rear or buy dually adapters which are basically spacers to run the dually wheels. And yes the fenders will just bolt on, but you may need to cut out your fender wells also.. __________________ Chickenhouse chopshop 81 rcsb chevy bagged LS1/4l60E(under the knife) 94 ecswb L92 headed LQ9/ 4l80E(waiting to go under the knife) 78 rcsb chevy LQ4/4L80E



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