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Trying to turn my 79 620 into a 4wd


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#1 Trod8812

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Posted 05 November 2017 - 03:22 PM

I have a 1979 620 and I was to turn it into a 4 wheel drive but the only information I was able to find was about king pins and this
Article.

http://www.fourwheel...spotters-guide/

Can anyone help me with what I would have to do to accomplish this? As far as I know datsun did not make a stock 4x4 620.

#2 flatcat19

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Posted 05 November 2017 - 03:50 PM

Put it on a 720 4x4 chassis. Maybe even an S10.

Lots of work making a 620 4x4.


Redeye has a kick-ass 620 4x4.

You can't hang if your nuts haven't dropped...it's physics


#3 datzenmike

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Posted 05 November 2017 - 04:04 PM

Find a 620 that was converted by Low Manufacturing.... it wasn't a bolt on conversion, but more like a weld on and there was some question on the quality of the work done. By now they are likely well worn out.

 

Find a 720 4x4 and put your body on it. The 720 is OK but because of the IFS is much limited in how high you can run. Same as the Chevy S-10.

 

Find an 'early '80s Toyota 4x4 with the leaf spring solid axle front end and put your 620 body on it.  Almost unlimited lift available....

 

 

I never completed mine. 720 2wd long wheelbase frame, 720 T-100 trans case, Toyota SAS. With 33" tires I had to make my own power steering for it. Not advisable. Swap your body onto something else.

 

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#4 Rick-rat

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Posted 05 November 2017 - 05:27 PM

The easiest way is to do as suggested, swapping body on to something else. Another option would be dually's on the rear with a welded rear end and you would have 4WD :rofl:



#5 Trod8812

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Posted 06 November 2017 - 02:39 AM

How much alteration do I have to do to mount a 620 body to a 720 frame?

#6 datzenmike

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Posted 06 November 2017 - 05:53 AM

Mine pretty much fit right on.

 

If you have a long wheelbase or KC it won't fit a short wheelbase 4x4.

All cabs even the KC, have the same bolt pattern.

A KC and a short wheelbase truck use the same box.

You can fit a KC and box onto a long wheelbase truck by moving the two front box mounts back about 9". (this is what I dd)


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#7 thisismatt

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Posted 06 November 2017 - 06:01 AM

Buy a toyota, sell the 620
I'm your huckleberry.

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That's all, and that's no joke
These guys don't appreciate I'm broke

#8 banzai510(hainz)

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Posted 06 November 2017 - 08:41 AM

I agree with this is matt.

 

Lower your 620

and buy the toyota or

a  staight 6 Cammanche jeep truck

 

and still be cheapr overall and have 2 rigs


Throw on some Weber sidedrafts, Rising Sun hood.... call it good

#9 gene knight

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Posted 07 November 2017 - 01:02 AM

i want to do a 620 kc into a 4x4



#10 ]2eDeYe

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Posted 07 November 2017 - 05:52 AM

There are several ways to do this. Most involve a welder. 

 

Here is how I did mine. It was already 4x4, but I cut everything off and started over. 

 

http://community.rat...0-king-cab-4x4/


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Member- *Japanese Trucking Association*

**DATSUN FAQ** ~ If ya know it, post it ~ If ya don't know it, learn it ~

ratsun.net rising sun stickers                     ratsun business cards order thread

620 KA24 Motor Mount Swap Brackets

1977 620 KingCab Deluxe KA24DE Swap - Refresh and cleanup
1978 620 kingcab 4x4 - KA24E SAS w/Dana 44 front and Toyota rear

1967 RL411 Station Wagon

 

Whenever I think that I'm out of my mind for putting this much time and money into an old Datsun, all I have to do is look some of your threads to know that I'm not nearly as whack as you are.

You're going to skin a few knuckles, stand up too fast and bump your head, hunt around the floor for the nuts and bolts you dropped, invent a few new cuss words and when you're finished you'll say "That wasn't so hard after all!"


#11 ]2eDeYe

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Posted 07 November 2017 - 05:54 AM

IMG_3364.JPG

 

 

Even if you start with a toyota, if you wheel it, you will be rebuilding it. 


Smokin' Joe's House of Datto's

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Member- *Japanese Trucking Association*

**DATSUN FAQ** ~ If ya know it, post it ~ If ya don't know it, learn it ~

ratsun.net rising sun stickers                     ratsun business cards order thread

620 KA24 Motor Mount Swap Brackets

1977 620 KingCab Deluxe KA24DE Swap - Refresh and cleanup
1978 620 kingcab 4x4 - KA24E SAS w/Dana 44 front and Toyota rear

1967 RL411 Station Wagon

 

Whenever I think that I'm out of my mind for putting this much time and money into an old Datsun, all I have to do is look some of your threads to know that I'm not nearly as whack as you are.

You're going to skin a few knuckles, stand up too fast and bump your head, hunt around the floor for the nuts and bolts you dropped, invent a few new cuss words and when you're finished you'll say "That wasn't so hard after all!"


#12 datzenmike

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Posted 07 November 2017 - 06:31 AM

It never ends.


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#13 Trod8812

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Posted 07 November 2017 - 04:24 PM

What did you do with the gauges, did you use the stock gauges or after market, I got a standard cab short bed 620

#14 flatcat19

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Posted 07 November 2017 - 08:09 PM

Gauges seem like one of the last things to worry about with such a project.

You can't hang if your nuts haven't dropped...it's physics


#15 Trod8812

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Posted 08 November 2017 - 03:29 AM

Very true but I found a guy who has a 720 4x4 for 600 bucks and I have a welder and all the tools to do the swap so I want all the information I can get to do the swap as fast as possible. If I ask a question it's to gain knowledge, not because that's going to be the first thing I am going to do.

#16 thisismatt

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Posted 08 November 2017 - 05:57 AM

I would not go through the trouble of a 720 4x4 swap, especially if one of the early models. You won't be able to maintain the front drive...
I'm your huckleberry.

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That's all, and that's no joke
These guys don't appreciate I'm broke

#17 datzenmike

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Posted 08 November 2017 - 05:57 AM

720 speedometer cables have a different gauge end but same at the transmission so use the 620 cable. Fuel and temp gauges should work the same as the 620. I've used 720 gas tanks on a 620 no difference in readings. Everything else is 12 volt.

 

Are you planning to run the 720 engine and transmission?


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#18 Trod8812

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Posted 08 November 2017 - 06:36 PM

I was going to use the 720 engine and transmission so I can rebuilt my l20b

#19 Stoffregen Motorsports

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Posted 11 November 2017 - 02:16 PM

I know this isn't the right forum to peddle my wares, or even to try and broaden the minds of would-be off-roaders, but if you are serious about this, give me a call or send me an email and I can walk you through all the ins and out, the pros and cons, and some potential pitfalls to avoid.

 

One of the common myths of installing a solid front axle is that you lose driveability. That's not true in the least. With the right combination of parts and a good base of knowledge, a solid axle 4x4 can be a very safe and capable daily driver. My self imposed rules here at my shop start with "safety first", and then my "10 year rule" followed by my "valet test". Pass all three of these criteria and you will not be disappointed.

 

Will you have constant maintenance as some have suggested? Depends on how you build it in the first place and how you drive.

 

Is it so expensive that you should have gone out and bought a new used 4x4? No way.