2WD To 4WD Conversion..

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Re: 2WD To 4WD Conversion..

Postby coalroller1 » Wed Jun 12, 2013 7:30 pm

ive studied this post and many others, and being i have a '92 5 speed this one is most helpful, im currently going to attempt this, and i have a blown up 1991 w250 lined up for a donar truck, if you could do me so much as a list of other parts i will have to find or fabricate i would greatly appreciate it, by the way yours looks stunning!!

Image
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Re: 2WD To 4WD Conversion..

Postby 1990 » Tue Jul 02, 2013 9:09 pm

coalroller1 wrote:ive studied this post and many others, and being i have a '92 5 speed this one is most helpful, im currently going to attempt this, and i have a blown up 1991 w250 lined up for a donar truck, if you could do me so much as a list of other parts i will have to find or fabricate i would greatly appreciate it, by the way yours looks stunning!!

Image



You will not need anything if you have a donor truck. If the donor is in better shape then the 2wd, just swap the good engine into the 4x4 and your done.
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1990 D250 4WD CONVERSION Retired
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Re: 2WD To 4WD Conversion..

Postby coalroller1 » Tue Oct 15, 2013 3:13 pm

the donar actually is not useful the auto tranny is bad and truck is rusted apart, i have swapped the rear axle and rebuilt the front axle with new seals, u-joints and brakes, i got a new 4wd gear box and steering shaft, along with a coupler that will mate my 23 spline transfer to the 29 spline standard, my questions are what do u have to do to the stock 2wd crossmember, why did you use a crossover steering and not use a different gear box? and what structural integrity issues will i have to worry about with torching so many rivets off

thanks alot! sorry i havent gotten the ball rolling till the past 2 weeks
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Re: 2WD To 4WD Conversion..

Postby CumminsPower59 » Tue Oct 15, 2013 5:06 pm

Steering gears are the same, just different gear box plate tomounting location and orientation of the Pittman arm. You can torch off as many rivets as you need, as long as you replace whatever they are attaching with quality fine thread bolts, as they can be torqued further than coarse thread bolts. Using pinch nuts is always a good idea too. Crossover steering is a good choice as it results with better feel and response with the steering. As for the cross member, I can't answer that one... ;)
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Re: 2WD To 4WD Conversion..

Postby DodgeFreak » Wed Oct 16, 2013 5:03 am

last I knew you had to notch the ends I believe. I would swap crossmembers if the one in the donor is good.
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92 W250 Ext cab rotted completely out. Auto, pump maxed, 215 ppump nozzles, Denny T2 pin.
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Re: 2WD To 4WD Conversion..

Postby coalroller1 » Wed Oct 16, 2013 7:47 am

thanks guys! and I haven't seen it for myself but I was told the blind spline for the pitman arm is 1/4 back on a 2wd, plus I found a 4wd one that had a new draglink and everything, plus a revised steering column input shaft, so I wont have to be shimming it with beer cans any more :lol: and im not worried about it handling well, I drove a ramcharger with bent a spring hanger and 35" tires for years

as for the rivets I have a mess of grade 8 fine thread bolts, but should I hoist the weight of the motor up before I start torching off a-arms? and will I have to change motor mounts if I do just swap the crossmember
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Re: 2WD To 4WD Conversion..

Postby Sandhiller » Sun Oct 20, 2013 5:01 pm

I am wanting to do this swap but before I buy anything I was wondering if you had to change the title any.
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Re: 2WD To 4WD Conversion..

Postby dazedandconfused » Sun Oct 20, 2013 5:15 pm

Last one I did I just told them at the courthouse I converted when I played my registration and she just changed it and I gota new title. Nothing had to be inspected but that's Kentucky.
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Re: 2WD To 4WD Conversion..

Postby Sandhiller » Thu Oct 24, 2013 7:45 pm

I have a 1979 Gmc used to be diesel and was changed to gas when I told the court house couple years back they made me get a salvage title. I really didn't want a salvage title on my dodge, this is in Nebraska.
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Re: 2WD To 4WD Conversion..

Postby CumminsPower59 » Mon Oct 28, 2013 3:42 pm

Then don't say anything ;)
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Re: 2WD To 4WD Conversion..

Postby coalroller1 » Tue Oct 29, 2013 11:36 pm

i never thought of that either as far as insurance wise if you were to get in an accident and notice a 4wd titled as a d250, i suppose that could get sketchy
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Re: 2WD To 4WD Conversion..

Postby CumminsPower59 » Wed Oct 30, 2013 9:30 am

99% of non-1st gen owners don't know the difference between D models and W models. Heck, there are some 1st gen owners that don't even know the difference :roll:
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91 W350 SRW, 3.07's, NV4500, 370's, THD LPPP, Super HX40, 2nd gen IC swap, BHAF, Isspro's, 2" lift, 285's on 3rd gen 17"'s.
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Re: 2WD To 4WD Conversion..

Postby Sandhiller » Wed Oct 30, 2013 6:43 pm

CumminsPower59 wrote:Then don't say anything ;)

Pretty much what I was thinkin also my dads cousin (the county sheriff) said that I think you could talk both vins off the 4x4 and put em on, but otherwise just not telling them would probably work the easiest.
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Re: 2WD To 4WD Conversion..

Postby rb70383 » Sat Nov 16, 2013 8:27 am

Did u cut the bottom of the engine crossmember out?
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Re: 2WD To 4WD Conversion..

Postby coalroller1 » Tue Nov 19, 2013 6:56 pm

rb70383 wrote:Did u cut the bottom of the engine crossmember out?



i swapped crossmembers it's easier than chopping up the 2wd one, i have a build thread under conversions
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