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Poll

First poll on RMTS! What 14-bolt axle should I build?

OPTION A: GLO diff cover, Keep 3.73 gear ratio, use stock gov-lock differential, no TMR Shave kit.
OPTION B: GLO diff cover, Change to 3.55 gear-ratio, new Grizzly locker, no TMR Shave kit.
OPTION C: GLO diff cover, Full-tilt: 3.55 gear-ratio, new Grizzly locker, TMR Shave kit.
OPTION D: GLO diff cover, keep 3.73 gear ratio, new Grizzly locker, TMR Shave kit (Ken's option)

Author Topic: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion  (Read 62940 times)

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Offline Flyin6

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #150 on: March 26, 2015, 03:50:45 PM »
Oh, cool

Just noticed it

Voted!
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Online JR

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #151 on: March 26, 2015, 03:57:21 PM »
C (yes I voted) do it right,,,,,,,,,,,,,,,
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Offline BobbyB

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #152 on: March 26, 2015, 04:30:38 PM »
Voted for "C"
So, Bobby...being the calculating trained warrior NCO that you are.  Take the appropriate action, Execute!
your standard grunt level CQB is just putting rounds and rounds on scary stuff till it stops scaring you!

Offline Sammconn

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #153 on: March 26, 2015, 04:42:14 PM »
Couple comments. You can't say 'build' and put the gov bomb under the cover.
Gears will need to be what the calculator says is ideal.
It appears you have already bought the shave kit.
As well you have pointed to the ground clearance issues with the desired tires.

Yes it will be more cost and time but option c seems to fit the bill.

And yes I voted too.
I just don't want to wind up missing a digit or limb.  I can sometimes get in a hurry to get results.
Sam

Offline Flyin6

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #154 on: March 26, 2015, 07:19:28 PM »
Just to clarify my choice. If I didn't know this guy (Like a brother) I'd have voted for "C" as well. But since I do know him, I don't want him spending a ton of money which will slow down this build even more. I want to see parts coming off that ugly yellow thing PDQ!

I know what he is going to be getting into when he starts putting that big pig iron in the engine bay!
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OldKooT

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #155 on: March 26, 2015, 08:06:07 PM »
May I present another option?

Change your front Dana 60 to 3.73 (used Gears are $75)... any rear axle Dana 60 3.73 set will work...say like a half billion Ford Vans and F250's

Advantage to this is cost, and being a front axle, gear set up is less stressful. Take the money saved and purchase a front L/S locker of choice.

Run the rear 14 bolt as is. Shave off the bottom lip with your sawzall and grind smooth and your back to almost Dana 60 diff clearance.

Run some short 35" rubber, like say BFG's as an example that are a true 33.5 or so. This will net you close to the same cruise rpm as a average 31.5" tall 33" tire. It's a old Dodge it will need new springs anyway, a mild lift is a simple upgrade. Or go for 4" of lift and run some 37" rubber that's 35" tall. Or some 345/75/16 KM2's they are right under 36" actual. All these are just ideas/examples.

I'd run the gov lock for now and upgrade it at a latter date. Besides the fact I don't think you can even buy 3.54 gears for the 14 bolt. The other issue is you will need a open carrier to put a locker in it. You can't use the gov lock carrier.

That's ma two cents worth.


Offline Flyin6

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #156 on: March 26, 2015, 08:13:35 PM »
^^^Now that makes sense!
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Offline KensAuto

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #157 on: March 26, 2015, 09:53:15 PM »
Option D: 3.73s, Grizzly, shave (only because you already have it)
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OldKooT

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #158 on: March 26, 2015, 11:52:38 PM »
Yah in thinking about what Ken just mentioned... shave that thing, ya own the parts...doesn't cost anything but time at this point. Besides.....it look like it would be a fun project.

BTW don't forget regardless how you set that thing up... weld the axle tubes to the center section. That is a must do for any 14 bolt that will see hard use. (Cummins)

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #159 on: March 27, 2015, 12:35:43 AM »
Yukon shows a 3.42 ratio.
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Offline Dustoff35

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #160 on: March 27, 2015, 07:29:24 AM »
OPTION D (Ken's Choice) added.  You can change your vote if you like, you know; vote against it after you vote for it; that kind of thing…
 
This POLL feature has a lot of options.  Kinda cool.

On the shave kit, I saw one installed on the Xtreme 4x4 show on Powerblock TV a few years ago. I knew if I ever had a vehicle with a 14 bolt, I would want to do that.  The kit itself was not that expensive, Its mostly labor / welding, which will already be happening on this axle with the new perches, shock mounts and tube welding.

http://www.powerblocktv.com/episode/XT2011-09/14-bolt-axle-101-low-dollar-wheeler-part-3#.VRU-8kv_ITs







 

Offline Flyin6

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #161 on: March 27, 2015, 07:56:09 AM »
I changed to "D"

Used a "Big D"  Now where have I heard that before?????
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Offline Sammconn

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #162 on: March 27, 2015, 09:10:48 AM »
I like the way Ken was thinking. And Norm brings many good points to the table as well.
Changed to "D" now as well. May be the most effective use of time and money.
I just don't want to wind up missing a digit or limb.  I can sometimes get in a hurry to get results.
Sam

Offline EL TATE

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #163 on: March 27, 2015, 12:00:46 PM »
I also choose D. 3.55 is not an option for the rear, 3.73's are ideal for 33" up to 35" for the CTB depending on trans obviously, but I offer you a new option as well: YDGGM11.5-30-1 a classic limited slip option just assembled last week by our group here in WA. smooth street driveability with high performance nodular casting, 8320 forged internals and raebestos clutches. no governor to blow up, but still a limited slip, so not as much traction and brute strength as the grizzly. I'm not as good putting the pros and cons list together but there you have my $0.02
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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #164 on: March 27, 2015, 05:09:02 PM »
That looks good for my rear 14bt!! I don't really like a locker for its street maners. But then again I have spun a truck all the way around in a corner with a posi.
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Offline Flyin6

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #165 on: March 27, 2015, 06:54:00 PM »
That looks good for my rear 14bt!! I don't really like a locker for its street maners. But then again I have spun a truck all the way around in a corner with a posi.
I'll tell you JR, until you try that Grizzly, don't pass judgment on all lockers. Mine is so smooth, you barely know it's there!
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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #166 on: March 27, 2015, 10:04:42 PM »
Hmm, always open to advice. This one?


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Offline Flyin6

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #167 on: March 27, 2015, 11:56:41 PM »
Hmm, always open to advice. This one?



Mine was the whole piece, but I have the 11.5 AAM, not the 14 bolt...

Tate...???
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Offline KensAuto

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #168 on: March 28, 2015, 12:23:11 AM »
Norm also brought up a very good point....you have to have an open style diff to accept a locker.
Maybe you have that covered already...?..?
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Offline Dustoff35

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #169 on: March 30, 2015, 08:41:56 AM »
Norm also brought up a very good point....you have to have an open style diff to accept a locker.
Maybe you have that covered already...?..?

I do not have an open carrier for a locker so I would have to either source one or go with a complete unit like the one EL TATE posted above.  As for the transmission, I have a Getrag 5-Speed.  I don't know what the final drive ratio is.

Offline Dustoff35

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #170 on: March 30, 2015, 09:10:04 AM »
I just came across this:

http://www.ebay.com/itm/GM-10-5-14-Bolt-Chevy-Ring-Pinion-Gears-3-55-Ratio-Thick-14T-39-11-/281311020712

3.55 ratio R&P gears for a 10.5 inch 14 bolt...

« Last Edit: March 30, 2015, 09:11:30 AM by Dustoff35 »

Offline Drunksailor

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #171 on: March 30, 2015, 10:26:36 AM »
Maybe i missed something but is there a GLO cover for a shaved 14 bolt?
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Offline Dustoff35

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #172 on: March 30, 2015, 11:36:18 AM »
Maybe i missed something but is there a GLO cover for a shaved 14 bolt?

No.  It has to be trimmed and the TMR cover plate welded on.
« Last Edit: March 30, 2015, 11:37:04 AM by Dustoff35 »

OldKooT

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #173 on: March 30, 2015, 12:11:22 PM »
Getrag 360
1st: 5.531 2nd: 3.017 3rd: 1.60 4th: 1.0 5th: 0.77 R: 5.029

I would call and see what the deal with those gears are. Be a first if someone is making them.


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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #174 on: March 30, 2015, 12:29:24 PM »
I do not have an open carrier for a locker so I would have to either source one or go with a complete unit like the one EL TATE posted above.  As for the transmission, I have a Getrag 5-Speed.  I don't know what the final drive ratio is.
OOps, Must have missed Tate's post when on my phone
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Offline Dustoff35

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #175 on: April 07, 2015, 04:49:01 PM »
 On hold until taxes are compete…  :-\

OldKooT

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #176 on: April 07, 2015, 08:50:09 PM »
I hope it works out better than you expect it to. On the bright side, maybe you can write off part of the project next year LoL


Offline EL TATE

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #177 on: April 08, 2015, 12:24:47 PM »
I just came across this:

http://www.ebay.com/itm/GM-10-5-14-Bolt-Chevy-Ring-Pinion-Gears-3-55-Ratio-Thick-14T-39-11-/281311020712

3.55 ratio R&P gears for a 10.5 inch 14 bolt...

incorrect. the photo is 14t, but 3.55 was never an option for that axle. either a miscount on the teeth, 41-11 is 3.73, 41-12 is 3.42, 41-10 4.10 etc. or he has used a stock photo of a 14t, 10.5 and confused his diff. GM's ran 10.5 dana 70 hd's as well and dealers will often tell customers that they have a "10.5" and the customer then assumes 14t, not 10 bolt dana 70hd. I would contact the seller and verify tooth count and pilot brg jrnl at the end of the pinion gear prior to ordering.

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Offline EL TATE

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #178 on: April 08, 2015, 12:28:07 PM »
I'm also an idiot and gave you the wrong part number on the limited slip. and you are also right in the fact that that you cannot run a grizzly with a Gov loc case, you would need a standard open case to put it in. YDGGM14T-3-30-1 is the right number on the Duragrip, but I was just informed they will not be available until mid June... cue "price is right loser music", wha wha wha wha, whaaaaaaaaaaaaa. at this time the eaton, EAT19689, (just like the duragrip) or the true trac, (like JR's front, TT 915A545) is available. or find yourself an open case, stick a grizzly in there and adjust your driving style to the locker.
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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #179 on: April 15, 2015, 03:34:16 AM »
What is the width on that axle wms to wms surface?? Looking at options for the SUB with stock H1 wheels.
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Offline Dustoff35

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #180 on: April 15, 2015, 07:38:03 AM »
I'll try to find where I wrote that down.  I can't measure it right now due to the axle being disassembled at present.

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #181 on: April 15, 2015, 03:14:59 PM »
Can you look at the year stamp to give me idea?

THX.
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Offline Dustoff35

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #182 on: April 15, 2023, 07:32:32 PM »
What should I do with this? Can it be saved?
« Last Edit: April 15, 2023, 07:37:49 PM by Dustoff35 »

Offline Flyin6

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #183 on: April 16, 2023, 01:14:19 PM »
^^^^^He is setting us up...!!!^^^^^^^^^^^^
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Offline wilsonphil

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #184 on: April 16, 2023, 02:53:57 PM »
Sell it to a Dodge person that will shorten the frame and add a Ramcharger body on top.

Offline stlaser

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #185 on: April 16, 2023, 04:06:00 PM »
Sell it to a Dodge person that will shorten the frame and add a Ramcharger body on top.

Day late and dollar short now I think…..
Living in the remote north hoping Ken doesn’t bring H up here any time soon…..

Offline Dustoff35

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #186 on: April 16, 2023, 04:31:13 PM »
Yep, too late…

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #187 on: April 16, 2023, 06:12:38 PM »
^^^ He's working you boys... There's something up here, and I really do not know!
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Offline Dustoff35

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #188 on: April 26, 2023, 05:34:33 AM »
Back in early October, Don and I worked out a deal for him to purchase the chassis that I acquired years ago for the PowerWagon build. He had wanted it for quite some time. His intent was to use the power train for his Suburban build.

Because he was still somewhat recovering from back surgery and his lifted Chevy is not a great tow vehicle and he had not yet acquired his Ram pickup, I offered to drive the 65 miles to the farm, pick up his trailer, load the chassis onto it, and deliver the chassis back to the farm.  4 to 6 weeks later, he changed his mind regarding the Cummins/Suburban swap and bought the Jeep truck.

No money had changed hands so I drove back to the farm and retrieved the chassis. I brought the chassis to my friend Dan’s welding and fabrication shop with the intent to disassemble and part out the chassis. Dan’s shop is a mile from my old place, where the chassis was previously stored. In short, I drove 390 miles over 3 separate days, to move the chassis one mile down the road…
« Last Edit: April 26, 2023, 05:59:12 AM by Dustoff35 »

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #189 on: April 26, 2023, 12:34:24 PM »
With the chassis relocated to DKWELD, disassembly began…

But first, we had to organize a workspace with shelving, work bench, tool boxes, etc. I bought a Husky rolling toolbox from Home Depot and brought some tools over.

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #190 on: April 26, 2023, 12:40:16 PM »
I bought an old Safety Kleen parts washer off of FB marketplace and set about stripping, repainting and rebuilding it.

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #191 on: April 27, 2023, 10:21:26 PM »
Yeah, I was salivating some. 6BT with all the trimings, looks like a 4500 and 205 to boot.
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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #192 on: April 29, 2023, 08:38:18 AM »
Yeah, I was salivating some. 6BT with all the trimings, looks like a 4500 and 205 to boot.
The chassis is from a late model year 1991 IC 1st Gen Ram. Early 1991 models were not intercooled. The NV4500 was not available until the 1994 2nd Gen model so this chassis has the Getrag 360. The G360 was only in production for 5 years and does not have aftermarket support. I wish this one was a NV4500. It does have the NP205 transfer case, which is a very strong, gear-driven unit.
« Last Edit: April 29, 2023, 08:39:05 AM by Dustoff35 »

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #193 on: April 29, 2023, 08:47:40 AM »
After we removed the driveshaft, we pulled out the NP205 transfer case. After some research and a discussion with Shawn, I decided rebuilding this was something I could do. I ordered some parts from Great Lake Extreme Off-road a rebuild kit from Randy’s Worldwide and a technical manual from Torq-King and began disassembly.

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #194 on: April 29, 2023, 10:12:31 AM »
Within a few days, I received parts from GLO (Shawn). Here is a fabricated differential cover for a Dana 60 axle. We will use this on the front axle that will be built for the crew cab.

The flat plate with 6 holes is a PTO cover plate that will fit onto a NP205 transfer case and other transfer cases and transmissions. We will weld this plate to a section of pipe so that we can mount the transfer case to an engine stand for disassembly and rebuilding.

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #195 on: April 29, 2023, 10:25:30 AM »
We cut a section of pipe at a 45 degree angle and welded it to the plate. The assembly easily bolts into place on the NP205 PTO access port and slides right into our engine stand. Now we can tear-down and reassemble the transfer case without wrestling with it on the workbench. Brilliant! Thanks for a great product, Shawn.

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #196 on: April 29, 2023, 01:18:12 PM »
 :likebutton: Keep ‘em coming you have a ways to catch up yet……
Living in the remote north hoping Ken doesn’t bring H up here any time soon…..

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #197 on: April 30, 2023, 04:44:00 AM »
I just sold the Dodge 205 I had. Now Im selling the gm 203. 205s are easy to rebuild.

That picture looks like the motor is intercooled? Non intercooled have a direct pipe from the intake to turbo.
« Last Edit: April 30, 2023, 01:24:18 PM by JR »
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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #198 on: April 30, 2023, 08:18:42 AM »
During disassembly a random thought crossed my mind; If a transfer case was an animated character, which one would it be?

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Re: 1975 Dodge Crew Cab Power Wagon Build and Cummins 6BT Conversion
« Reply #199 on: April 30, 2023, 08:28:43 AM »
After disassembly, degreasing and power washing, a few hours of electrolytic rust removal. 

 

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