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Old 07-07-2010, 12:00 AM   #1
Patriot
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Question Making a G20 a 4x4???

As the title says fellas, I want to make my 1991 GMC G20 conversion van into a factory looking 4x4. I have a near mint drivetrain to put in it and I was just wondering if any of you pros have done this before??
I want to make a good Bug Out Vehicle(BOV).

The chassis I have is a SM465/205 with a Dana 44 front and 12 Bolt POSI rear. I do have a 3/4 Ton and 1 Ton drivetrain I can use(Dana 60 front, Corp 14 bolt rear and Dana 60 rear posi)


Thanks fellas for your input.

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Old 07-07-2010, 12:23 AM   #2
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Re: Making a G20 a 4x4???

This project sounds so bad ass, please post pictures, im sure its possible.
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Old 07-07-2010, 01:30 AM   #3
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Re: Making a G20 a 4x4???

wont the shifter on that 3 speed be 2-3 feet to far back......

i'd find a divorced np205 to go behind the transmission in there now.. fab up a crossmember (current thread in the 4x4 section) and get yours drive lines made.... just swap the rear axle with possibly some custom lift springs and then do something like a b52 kit on the front....

Last edited by bikes&bowties; 07-07-2010 at 01:34 AM.
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Old 07-08-2010, 09:02 AM   #4
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Re: Making a G20 a 4x4???

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Originally Posted by bikes&bowties View Post
wont the shifter on that 3 speed be 2-3 feet to far back......

i'd find a divorced np205 to go behind the transmission in there now.. fab up a crossmember (current thread in the 4x4 section) and get yours drive lines made.... just swap the rear axle with possibly some custom lift springs and then do something like a b52 kit on the front....
If you took the bend out of the shifter or even turned it 180 degrees in the case and reshaped it a little I bet it would work. I think the shifter boss would end up right about where the front edge of your seat is so probably a forward bent shifter would be needed.

You would need to find and adapt a hydraulic clutch setup for sure though.
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Old 07-08-2010, 10:29 AM   #5
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Re: Making a G20 a 4x4???

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Old 07-08-2010, 12:01 PM   #6
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Re: Making a G20 a 4x4???

not to be a buzzkill, but aren't 4x4 vans notorious for bent frames?
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Old 07-08-2010, 12:16 PM   #7
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Re: Making a G20 a 4x4???

Quote:
Originally Posted by willett View Post
not to be a buzzkill, but aren't 4x4 vans notorious for bent frames?
That's after you watch too many episodes of the A-Team.
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Old 07-08-2010, 07:31 PM   #8
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Re: Making a G20 a 4x4???

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That's after you watch too many episodes of the A-Team.
HAHA awesome! I always like how they use a completely different van for the jump scene, usually with the round headlights.
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Old 07-08-2010, 08:48 PM   #9
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Re: Making a G20 a 4x4???

Quote:
Originally Posted by willett View Post
not to be a buzzkill, but aren't 4x4 vans notorious for bent frames?
GM vans do not have frames they are basically unibody.

I have seen this done before, but it required massive modification to the front of the van structure as the engine cross-member and 2wd suspension mounting points are all in the way of a solid axle.
Years ago a company called Pathfinder made a kit to "bolt-in" and add either a leaf sprung or coil-over solid axle.
Leafs are very hard to do unless you want to have your mounts sticking well out in front of the van.
Coils are a bit easier, but still require massive amounts of fabrication.

Also you have to consider the differences in steering between a van and a solid axle truck.

Not to try and steer you away from this, heck I have a 94 G20 sitting in my garage that I want to do the same thing to, and I have a full 1/2t driveline sitting around to swap into it as well.

Check out Pathfinder Vans
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Old 07-08-2010, 10:51 PM   #10
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Re: Making a G20 a 4x4???

I have a HP60 that came out of a Pathfinder van, was built in 85 or 86.

After reading some of the stuff in that site, I don't know if I'd want to buy anything that have...

*Small block engines and big block engines have different bell housing patterns.

*4-speed trannys can be installed if you use the rare 465 tranny top that has the shifter mounted to the rear of the shifter top. Used in the mid 80’s in 1 ton GM trucks
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Old 07-09-2010, 11:24 AM   #11
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Re: Making a G20 a 4x4???

Quote:
Originally Posted by b454rat View Post
I have a HP60 that came out of a Pathfinder van, was built in 85 or 86.

After reading some of the stuff in that site, I don't know if I'd want to buy anything that have...

*Small block engines and big block engines have different bell housing patterns.

*4-speed trannys can be installed if you use the rare 465 tranny top that has the shifter mounted to the rear of the shifter top. Used in the mid 80’s in 1 ton GM trucks
I agree, blatant errors like that are a good sign they don't know jack about Chevy parts and are just making stuff up to fill space.
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Old 12-28-2010, 10:10 AM   #12
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Re: Making a G20 a 4x4???

Looks like you've had several months to ponder this. Are you talking about bolting your van body to a 4wd 73-87 pick-up frame? Obviously some modding would be needed in certain areas but it sounds like the result would be worth it.
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Old 12-28-2010, 01:28 PM   #13
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Re: Making a G20 a 4x4???

I would do it if we still had are 76 Chevy g10 with a built sb350, th400 15"x10" tires in back 15"x8" in front thing had more power than my blazer sb400, th350 fun burn out machine for a thirteen year old kid but neighbors landlord hired a tow company to take some cars off his property and they took it off of are property with the cars they were there for and it was never seen again.
imagine this with slot mags and lowered it would be the exact van
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1981 GMC C1500 stepside 250i6, 3spd, 12bolt with 3.08s 2.5/4drop on 15x10 with 275/50r15
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Last edited by bmchevy1979; 12-28-2010 at 01:33 PM. Reason: found pic
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Old 12-28-2010, 01:35 PM   #14
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Re: Making a G20 a 4x4???

But this would be cool you should definitely do this
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1981 GMC C1500 stepside 250i6, 3spd, 12bolt with 3.08s 2.5/4drop on 15x10 with 275/50r15
81 GMC C3500 cab-chassis dually with utility bed 350sbc, Sm465, 14bolt with 4.10s nv4500 getting ready to go in
1979 Chevrolet K5 R.I.P. http://67-72chevytrucks.com/vboard/s...d.php?t=434096
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Old 12-28-2010, 04:36 PM   #15
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Re: Making a G20 a 4x4???

Quote:
Originally Posted by bmchevy1979 View Post
I would do it if we still had are 76 Chevy g10 with a built sb350, th400 15"x10" tires in back 15"x8" in front thing had more power than my blazer sb400, th350 fun burn out machine for a thirteen year old kid but neighbors landlord hired a tow company to take some cars off his property and they took it off of are property with the cars they were there for and it was never seen again.
imagine this with slot mags and lowered it would be the exact van
That is a sick van! but did you ever get any money or anything for your van being basically stolen?
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Old 12-29-2010, 10:24 AM   #16
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Re: Making a G20 a 4x4???

It was my dads van but we never did get any money for it we never could get a hold of the landlord. he was avoiding us that has been 4 years now and have not seen a glimpse of him at all new people moved in and we never saw him once
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1974 Chevrolet K5 Blazer 350sbc/SM465/NP205, dana44 front, corp 14bolt rear with 4.10s and a powertrax locker, custom rear bumper 400sbc in the works.
1981 GMC C1500 stepside 250i6, 3spd, 12bolt with 3.08s 2.5/4drop on 15x10 with 275/50r15
81 GMC C3500 cab-chassis dually with utility bed 350sbc, Sm465, 14bolt with 4.10s nv4500 getting ready to go in
1979 Chevrolet K5 R.I.P. http://67-72chevytrucks.com/vboard/s...d.php?t=434096
1976 Chevrolet C10 R.I.P. http://67-72chevytrucks.com/vboard/s...d.php?t=434195
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Old 12-29-2010, 12:43 PM   #17
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Re: Making a G20 a 4x4???

Quote:
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It was my dads van but we never did get any money for it we never could get a hold of the landlord. he was avoiding us that has been 4 years now and have not seen a glimpse of him at all new people moved in and we never saw him once

Well that is b.s. if it had been my van i would of done everything to get a hold of landlord (im sure you did) and then filled it as being stolen
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Old 12-29-2010, 01:24 PM   #18
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Re: Making a G20 a 4x4???

You could always fab-up a Ford style radius arm from suspension.
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Old 12-29-2010, 09:30 PM   #19
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Re: Making a G20 a 4x4???

There is one for sale on CL in my area, been for sale for a while. I think it`d be a cool idea, weekend camper, beach cruiser.
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Old 12-30-2010, 10:50 AM   #20
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Re: Making a G20 a 4x4???

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Well that is b.s. if it had been my van i would of done everything to get a hold of landlord (im sure you did) and then filled it as being stolen
We reported it stolen but they must have stripped it and crushed it because it was never found

Sorry for jacking your thread
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1974 Chevrolet K5 Blazer 350sbc/SM465/NP205, dana44 front, corp 14bolt rear with 4.10s and a powertrax locker, custom rear bumper 400sbc in the works.
1981 GMC C1500 stepside 250i6, 3spd, 12bolt with 3.08s 2.5/4drop on 15x10 with 275/50r15
81 GMC C3500 cab-chassis dually with utility bed 350sbc, Sm465, 14bolt with 4.10s nv4500 getting ready to go in
1979 Chevrolet K5 R.I.P. http://67-72chevytrucks.com/vboard/s...d.php?t=434096
1976 Chevrolet C10 R.I.P. http://67-72chevytrucks.com/vboard/s...d.php?t=434195

Last edited by bmchevy1979; 12-30-2010 at 10:51 AM.
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Old 12-30-2010, 03:15 PM   #21
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Re: Making a G20 a 4x4???

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Old 01-06-2011, 10:57 PM   #22
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Re: Making a G20 a 4x4???

I just spotted this while looking for parts on craigslist. If you're interested in making the drive down I can go check it out and take pics. looks like it would save you alot of fab work and give you a rust free body.

http://austin.craigslist.org/pts/2128123291.html
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Old 01-06-2011, 10:58 PM   #23
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Re: Making a G20 a 4x4???

Opps just noticed that it says the body is trash....Still a good chassis!
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A veteran - whether active duty, retired, national guard or reserve is someone who, at one time in his life, wrote a blank check made payable to 'The United States of America', for an amount of 'up to and including his life.' That is Honor, and there are way too many people in this country who no longer understand it."
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Old 06-10-2014, 01:59 PM   #24
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Re: Making a G20 a 4x4???

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Old 06-10-2014, 09:05 PM   #25
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Re: Making a G20 a 4x4???

saw this the other day
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