Cummins swap?

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Jan 27, 2015 | 10:57 AM

#16

79Supercab

Elder User

Joined: Jul 2001

Posts: 581

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From: Milton, Wa

Quote:

Originally Posted by Eli1644

He will only take 225$. Well one more question would I have to move my c6 more back? Or that hasn't be modified?

I don't have experience with the C6, but I doubt you'd be able to use the stock holes in the frame for the trans crossmember. I'd imagine the trans crossmember would move some. How much it moves depends upon how low and back you place your motor.

Does the motor you're looking at have A/C? Do you plan on using the A/C compressor if it does?

Jan 27, 2015 | 11:04 AM

#17

Eli1644

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Joined: Dec 2013

Posts: 250

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Yes it does have a/c but I was looking at buying the one on the newer cummins 12 valve. It's not as long...

Jan 27, 2015 | 03:16 PM

#18

co425

Cargo Master

Joined: Oct 2010

Posts: 3,417

Likes: 32

Quote:

Originally Posted by Eli1644

Yes it does have a/c but I was looking at buying the one on the newer cummins 12 valve. It's not as long...

Not as long??? All 12 valves are the same length. FYI I had to move my tranny crossmember to the rear to accommodate my nv4500. I'm betting you will have to move it no matter what tranny you use. The issue is radiator clearance. To get enough your rear valve cover has to be almost under the firewall.

My engine to firewall clearance.

How far I had to move my tranny crossmember.

Radiator clearance is 3/4" at the bottom.

Jan 27, 2015 | 03:31 PM

#19

79Supercab

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Joined: Jul 2001

Posts: 581

Likes: 2

From: Milton, Wa

I was thinking he meant the A/C compressor was shorter on the newer cummins?? I thought they were all the same??

Jan 27, 2015 | 06:33 PM

#20

co425

Cargo Master

Joined: Oct 2010

Posts: 3,417

Likes: 32

Quote:

Originally Posted by 79Supercab

I was thinking he meant the A/C compressor was shorter on the newer cummins?? I thought they were all the same??

Yep, those are the same too. I'm sure even for the 24 valve.

Jan 27, 2015 | 09:15 PM

#21

Eli1644

Thread Starter

Senior User

Joined: Dec 2013

Posts: 250

Likes: 0

Quote:

Originally Posted by 79Supercab

I was thinking he meant the A/C compressor was shorter on the newer cummins?? I thought they were all the same??

Whoops, I meant different brackets. I'm going off the info dieselconversions.com website. Old (Ford cummins). But I guess I got confused. With all this reading I been doing. Also the dana 70 was sold today. I was 30 minutes to late. But I guess I'll wait for a good donor vehicle. One more question. For the people who have completed their swap. Are you happy with the result? Would you ever own a gas rig ever again?

Jan 27, 2015 | 09:38 PM

#22

4wydnr

Elder User

Joined: Feb 2008

Posts: 550

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From: N. IL

I've been driving my 77 with the Cummins for the last 5 summers and it is a fun truck. My engine is all stock, not a smoke breathing dragon but moves the truck well. I get tons of looks and questions but most of all the satisfaction that I built it all on my own.

I never drove the truck with a gas engine in it. Every mile has been Cummins powered. I have a somewhat unique situation that has me considering moving to a gas truck. I have access to cheap, $0.70 per gallon, propane. At 10 miles per gallon it would have the same fuel cost per mile as a prius! Otherwise, I eagerly await every spring when the last of the salt is what washed off the roads and I can start driving it again.

Jan 27, 2015 | 11:27 PM

#23

co425

Cargo Master

Joined: Oct 2010

Posts: 3,417

Likes: 32

Quote:

Originally Posted by Eli1644

Whoops, I meant different brackets. I'm going off the info dieselconversions.com website.

One more question. For the people who have completed their swap. Are you happy with the result? Would you ever own a gas rig ever again?

If you have any sort of fab skills stay far away from ford cummins or the new name for them diesel conversion specialists. From the brackets they give you and the prices they charge are a total rip off. Their engine mounts that I have seen are very basic brackets that don't warrant the price.

I am absolutely happy with my swap. Better mileage and more power whats not to like. They only thing that throws me off is the sound it makes due to being so used to my old 460. As far as never buying another gasoline powered rig who knows. I do however prefer a diesel in a truck.

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Jan 28, 2015 | 07:39 AM

#24

mean351stang

Cross-Country

Joined: Jan 2008

Posts: 78

Likes: 0

From: Eastern Ohio

1985 F250 5.9 cummins D60 front-D80 rear

Doing the swap on my 85 was a night a day difference.. Pulled out the tired 351 Windsor/T-18 4 speed replaced with a VE pumped 5.9 and NV4500 trans.. Even though my 5.9 was mostly stock I still doubled torque and fuel mileage.. I had a ton a comments on my truck and it was nothing to look at.. I will be starting the swap on my 79 this weekend...

Jan 28, 2015 | 11:01 PM

#25

wils3825

Senior User

Joined: Dec 2014

Posts: 140

Likes: 0

Since I didn't see anyone say this, (I probably missed it) A D44 will not, repeat not, repeat not, handle the Cummins. That's a whole lot of weight, and power to push through it. If the engine were bone-stock, and you drove it gently it might work, the problem is that most 12 valves remain stock, with an untweaked pump for about ten minutes. Older brother has blown out drivelines, and a few destroyed axles from his '79 Fordge to go with that statement. That said, it sounds like you have a really awesome project going. I'm really interested to see what you do with it.