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Originally Posted by huntsonora
Originally Posted by Take_a_knee
What's a "killer dowel pin"?


During engine assembly, a steel dowel pin is pressed into the block to precisely locate its timing-gear housing. Over time, vibration can cause the pin to work its way out, and because it's made of steel, there is no working its way through the engine. To fix the KDP you have to tab it. This was the weakest point of the 12 valve. Mine was tabbed within my first 100 miles of ownership


huntsonora is right. The KDP can be an issue with some of the 24 valve Cummins, but it is mainly a 12 valve problem. It is an easy fix with the engine out or in a truck because I had to do one in my RV which I couldn't see without using mirrors. If I could do it like that, then being able to see what you are doing would be much easier.

My RV had about 35,000 miles on it at the time. It was a hard 35,000 considering what it has to move plus I use it to pull a very heavy trailer when we race. The dowel pin should be flush to slightly recessed from the factory. Mine had already worked out about a 1/4". It will do a number on the timing gears and case if it comes all the way out.

The kit is only about $60 to $75. It is more labor intensive than anything. I decided to put a Fluidampr during reassembly. I have one on my 24 valve Cummins that really quietened it down. I don't believe the horsepower claims from Fluidampr, but I do feel it is good for the long term longevity of a diesel engine.

GB2

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That truck with the Cummins would be amazing!


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Sweet rig man!


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Well ya basstard(!), your post got me thinking and after a ton of research, I snagged a '93 12v and I'm planning on dropping her in this winter. Only had 150,000 miles on it and the price was good so I jumped on it. Tabbed the KDP the other night. Just found a low mileage Allison. Need a Superduty intercooler, adapter kit and a few various parts and I'll be in business. Thanks (I think?) Haha.


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She's getting there!
[Linked Image]
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Screw you! I'm voting for Trump again!

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Screw you! I'm voting for Trump again!

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Dude!!!!! You did it! I haven't seen this thread since early summer and didn't realize you found a 12 valve! That truck is going to be unfreakingreal when you're done with it!

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that is cool, a 70's Ford with a 6BT is a marriage made in heavan


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That really is pretty awesome!!

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you are building my dream truck, I've followed several builds like this over on fordtrucks forums.

Go man go!!

Awesome truck.

How was your roof? seems to me the roofs were a weak spot on the old crews?



Something clever here.

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That thing is so bad ass it's unreal. Nice work! and it looks like it was a lot of work!


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Can this be done with a 7.3l powerstroke?


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Originally Posted by tzone
Can this be done with a 7.3l powerstroke?


This was my first thought, but a Cummins gets better fuel mileage (18-20mpg), is way more abundant (cheaper), fits good, doesn't need a computer to run and can generate more power cheaper. Not to mention a ton of guys have done the swap and have laid down a good road map.


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Originally Posted by northern_dave


How was your roof? seems to me the roofs were a weak spot on the old crews?



The floor pans were it for rust. Everything else is solid.

I ended up going with the stock Dodge auto trans. I can replace it roughly six times for what it would have cost to go with the Allison. Just wasn't feasible.

Things left to do

Mount/plumb the 38 gal tank
Mount the divorced 205-order drive lines
Pressure test radiator and mount it-figure out hoses
Drill holes and bolt up inter cooler-figure out hoses
Mount two batteries and wire everything
A/C - trading the old 460 to a friend to put this in along with the trans cooler lines and hydro boost brakes.
Floor pans (half done)
Dynamat
Exhaust

I'm gonna run the 44 up front until I find a 78-79 D60 for the right price.

Thanks again for all the compliments and encouragement.




Screw you! I'm voting for Trump again!

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Looks great...


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Damn... sweet rig.


Originally Posted by ingwe
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Originally Posted by Higbean
I'm gonna run the 44 up front until I find a 78-79 D60 for the right price.

Thanks again for all the compliments and encouragement.




I didn't think they even put the 44 in the F250's. I thought it was the 60 right away. I might have a 60, but I'll have to check, though I'm only 3000k miles away, so that probably won't help you much. smile

You're building a truck a guy could have for life. Nice work.


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60's were only in the Sno Fighter and Camper Specials if I'm not mistaken. Easy to tell by looking at the knuckle. Should be cast into the pumpkin as well. If you have ball joints (and the axle is original) it's a 44.


Screw you! I'm voting for Trump again!

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What's your goal for completion?

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That 44 will serve you well for a long time if you don't do any "sky wheelies"

grin


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