Swapping a Gas to Diesel Engine
Lead Driver
Joined: Mar 2004
Posts: 5,372
Likes: 108
From: Northern Indiana
I have never done this myself but I do believe it would be a lot of work. You would have to change the computer, wiring, also have to change out the springs and make sure you are set up for the extra weight. I know I am missing a ton, but that is just the tip of the iceberg.
FTE Leadership Emeritus
Joined: Sep 2000
Posts: 23,174
Likes: 1,678
From: Stephensville WI
These sites specialize in Cummins conversions:
fordcummins.com - Increase Horsepower with Ford Cummins Diesel conversion kits
DESTROKED: Cummins Conversions
fordcummins.com - Increase Horsepower with Ford Cummins Diesel conversion kits
DESTROKED: Cummins Conversions
Postmaster
Joined: Apr 2006
Posts: 3,524
Likes: 2
From: CA Bay Area
Unless you have parts for free, don't count your own labor and are good welder -you will never find it economical.
I bought 1980's motorhome that was converted to diesel. The guy who did it - put pretty old Toro Flow diesel on it, but had to redo all the piping, add auxiliary transmission to get the thing going above 50 mph and upgrade front wheels to handle the weight. I bought the motorhome for $4000 about 14 years ago.
That was before engines were married to the computers under the dash and transmissions....
I bought 1980's motorhome that was converted to diesel. The guy who did it - put pretty old Toro Flow diesel on it, but had to redo all the piping, add auxiliary transmission to get the thing going above 50 mph and upgrade front wheels to handle the weight. I bought the motorhome for $4000 about 14 years ago.
That was before engines were married to the computers under the dash and transmissions....
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New User
Joined: Apr 2010
Posts: 12
Likes: 0
I am getting off topic here but if i had to buy a 2007 truck what should I buy?
2007 F-350 or a 2007 Dodge 3500 Cummins?
I need a truck that can pull my boat out of water without any boat launch because I fish in areas that are really wild. Also I need to have good fuel economy.
this site ranks cummins number one diesel engine
10 Best Diesel Engines Ever - Diesel Power Magazine
However ford trucks look more serious.
I will consider putting in a cummins. you see on a car auction gas trucks go way cheaper than diesel. I was thinking I could save on that but apperently not. These days electricity is taking over. Something breaks you cant fix it. you have to go to a dealer. Back in the old days, if my old mans truck broke, he would get in there and fix it.
Thanks for the replies.
2007 F-350 or a 2007 Dodge 3500 Cummins?
I need a truck that can pull my boat out of water without any boat launch because I fish in areas that are really wild. Also I need to have good fuel economy.
this site ranks cummins number one diesel engine
10 Best Diesel Engines Ever - Diesel Power Magazine
However ford trucks look more serious.
I will consider putting in a cummins. you see on a car auction gas trucks go way cheaper than diesel. I was thinking I could save on that but apperently not. These days electricity is taking over. Something breaks you cant fix it. you have to go to a dealer. Back in the old days, if my old mans truck broke, he would get in there and fix it.
Thanks for the replies.
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Posting Guru
Joined: Dec 2006
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ok part of me wants to say you should probably start another thread but more of me wants to tell you that by 07 the 6.0 had the bugs worked out and is a solid motor, while the cummins is a great motor the 6.0 makes more than enough power and is reliable and the Ford is a much better truck
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New User
Joined: Apr 2010
Posts: 12
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ok part of me wants to say you should probably start another thread but more of me wants to tell you that by 07 the 6.0 had the bugs worked out and is a solid motor, while the cummins is a great motor the 6.0 makes more than enough power and is reliable and the Ford is a much better truck
Cargo Master
Joined: Jan 2009
Posts: 2,769
Likes: 8
From: Lubbock
the reason i mention a cummins is depending on what you choose it can be easier. the 12v cummins have very little electronics and are capible of decent power, the 24v and cr cummins will make good power and seem to yeild more mpgs. the 7.3 is a great motor but lacks power and has alot of electronics. the 6.0 has good power but needs a few items to be a reliable motor. the parts for either are expensive and wiring can be intense. from what i have seen others post the wiring harnesses between gas and diesel are different specifically for ford meaning that you would need a complete harness or to merge a harness.
Cargo Master
Joined: Jan 2009
Posts: 2,769
Likes: 8
From: Lubbock
I am getting off topic here but if i had to buy a 2007 truck what should I buy?
2007 F-350 or a 2007 Dodge 3500 Cummins?
I need a truck that can pull my boat out of water without any boat launch because I fish in areas that are really wild. Also I need to have good fuel economy.
this site ranks cummins number one diesel engine
10 Best Diesel Engines Ever - Diesel Power Magazine
However ford trucks look more serious.
I will consider putting in a cummins. you see on a car auction gas trucks go way cheaper than diesel. I was thinking I could save on that but apperently not. These days electricity is taking over. Something breaks you cant fix it. you have to go to a dealer. Back in the old days, if my old mans truck broke, he would get in there and fix it.
Thanks for the replies.
2007 F-350 or a 2007 Dodge 3500 Cummins?
I need a truck that can pull my boat out of water without any boat launch because I fish in areas that are really wild. Also I need to have good fuel economy.
this site ranks cummins number one diesel engine
10 Best Diesel Engines Ever - Diesel Power Magazine
However ford trucks look more serious.
I will consider putting in a cummins. you see on a car auction gas trucks go way cheaper than diesel. I was thinking I could save on that but apperently not. These days electricity is taking over. Something breaks you cant fix it. you have to go to a dealer. Back in the old days, if my old mans truck broke, he would get in there and fix it.
Thanks for the replies.
Posting Guru
Joined: Dec 2006
Posts: 1,118
Likes: 1
12v cummins is what i would go with. With a little modification it makes ton of power, it's simpler, and easy to build. the fordcummins.com site sells good conversion kits from what I've heard.
If you're buying an 07 i would just get a 6.0 350 and not swap in the cummins. The 07 will do what you need no reason to stick the cummins in it unless you just want to have a ford with a cummins diesel. (only thing is if you're going to get more power out of the 6.0 put in better head studs)
If you're buying an 07 i would just get a 6.0 350 and not swap in the cummins. The 07 will do what you need no reason to stick the cummins in it unless you just want to have a ford with a cummins diesel. (only thing is if you're going to get more power out of the 6.0 put in better head studs)
FTE Leadership Emeritus
Joined: Sep 2000
Posts: 23,174
Likes: 1,678
From: Stephensville WI
One rule we always followed when boating, you take 2 vehicles and a tow strap, or a solid 4 wheel drive vehicle.
Launching on unimproved ramps (like some of the drift boats I have seen put into rivers) I'd also opt for a front mounted winch.
Launching on unimproved ramps (like some of the drift boats I have seen put into rivers) I'd also opt for a front mounted winch.
