THIS IS THE PLACE TO LIST AND SELL YOUR TRUCKS AND PARTS FREE!

Home of all dually trucks with the GMC/Chevy 3500HD series truck a point of interest.

By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please register for an account above!

You can appreciate the “beef” of the GMC/Chevy 3500HD trucks, a stripped rolling 3500HD chassis weighs more than a running C1500!

When posting on this site you won't have to explain what the 3500HD Beast is! ie 19.5 wheels, straight axle, 10 bolt wheels, 15000lbs GVW, 4 Wheel Disc Brakes etc

We are based in the U.S. If you are not from the U.S. or Canada (all IP addresses checked) you will be rejected. If you are a legit overseas applicant, contact me via email: borderdrop@yahoo.com


Welcome to the 3500HD.com forum created October 2009

Author Topic: 4x4 conversion using parts from a srw 3500  (Read 829 times)

mark86

  • Single Axle Driver
  • *
  • Posts: 3
4x4 conversion using parts from a srw 3500
« on: February 05, 2017, 09:02:38 PM »
I am looking purchasing a 2000 3500hd That needs a new motor.  I have the donor motor from a 2000 k3500.  Is there any reason why I couldn't use that transfer case for the start of a 4x4 conversion.  Is my understanding right, that there are several front axle options available.  If so what is the easiest way to go on the front axle? 

RPF207

  • 3500HD Driver
  • ****
  • Posts: 223
  • Age: 29
  • Location: Maine
Re: 4x4 conversion using parts from a srw 3500
« Reply #1 on: February 06, 2017, 12:39:01 PM »
The transfer case will work just fine. There's already the dimple in the floor board of the HD where the shifter would go. The front Dana 70 which is specd for the gvw of the truck is hard to find but they are out there. A regular Dana 60 front HP from and '91 and earlier ford will work but the axles tubes just aren't as big as the 70 and the hubs are only 8 lug. So you'd have to find a 19.5" 8 lug odd ball set of rims. Those years had the king pins and the late 80s had a wider spring pad width which would be closer to the HD width. I'm sure the Dana 60 will hold up against normal abuse under the HD. But when I did mine I made sure it was a 70 since I planned on have a 9' plow, Cummins, and and 9' dump body.
1999 chevy HD 4x4 135.5" 6.5 nv4500 bw4470 Dana 70 HP 10 lug front

Due to recent budget cuts the light at the end of the tunnel has been turned off

mark86

  • Single Axle Driver
  • *
  • Posts: 3
Re: 4x4 conversion using parts from a srw 3500
« Reply #2 on: February 06, 2017, 05:28:40 PM »
Ok,  what year of vehicle will I find the dana 70 on?  Also will the 70 have 10 bolt hubs?  Finally can the brake on the drive shaft can it be moved to behind the transfer case or don't I need it?

1999HD

  • Single Axle Driver
  • *
  • Posts: 16
Re: 4x4 conversion using parts from a srw 3500
« Reply #3 on: February 06, 2017, 06:39:55 PM »
Only axle your gonna find a Dana 70 under is the 3500HDs that have been converted, and Ford F-450 or Superduty's, late 80s to late 90s I think. If your gonna use a 60, Dodge is the closest to match the spring perch width. Ford and GM are within a 1/2" I think, but the Ford is 78 and 79 ONLY. The later years have the perches too far apart at 36.5". The 10 lug hubs are gonna be the toughest. I'm looking for a set, and Quigley has a brandy new set for a measly $1700. But if you need/want to stick to 19.5s, there are 19.5s out there with the 8 lug pattern, and will bolt right up to standard dually hubs. Bread vans and similar delivery vans have them, they are also available new, but pricey....

RPF207

  • 3500HD Driver
  • ****
  • Posts: 223
  • Age: 29
  • Location: Maine
Re: 4x4 conversion using parts from a srw 3500
« Reply #4 on: February 06, 2017, 08:30:16 PM »
The e brake mechanism parts including drum and pads will work but you need the special output housing for the back of the BW4470 transfer case. I honestly think that finding a HD that's already 4x4 might be easier instead of trying to source parts to get yours 4x4. Buying a whole truck might end up being the only way you will get these parts. I didn't even buy my HD until I knew I could get all the parts for the 4x4 conversion. But whatever route you take is be glad to help. I see at least one 4x4 HD a year for sale on the web.
1999 chevy HD 4x4 135.5" 6.5 nv4500 bw4470 Dana 70 HP 10 lug front

Due to recent budget cuts the light at the end of the tunnel has been turned off

mark86

  • Single Axle Driver
  • *
  • Posts: 3
Re: 4x4 conversion using parts from a srw 3500
« Reply #5 on: February 06, 2017, 08:48:04 PM »
Well, I'm only paying scrap price for the truck so I thinks its worth a shot.  Did this trucks have open diffs in the rear?

RPF207

  • 3500HD Driver
  • ****
  • Posts: 223
  • Age: 29
  • Location: Maine
Re: 4x4 conversion using parts from a srw 3500
« Reply #6 on: February 06, 2017, 09:01:14 PM »
Mostly open diff but I believe there are some limited slips or Gov locks out there
1999 chevy HD 4x4 135.5" 6.5 nv4500 bw4470 Dana 70 HP 10 lug front

Due to recent budget cuts the light at the end of the tunnel has been turned off

 


LINK SECTION - FEEL FREE TO SUGGEST ANY LINKS (YOURS INCLUDED).



DIESEL HUB
DIESEL PLACE
JEEP WRANGLER WIRING DIAGRAMS
MILLER TIG Welding Calculator
VINTAGE CHEVY/GM FORUM