Will my plan work out?
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Elder User
Joined: Jan 2010
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Will my plan work out?
Ok, so I am repairing my truck and came across a weird idea, and wanna know if it will work.
Ok, so i found a strait 10 transmission that came out from behind a 5.9 cummins. My question is, will this fit my truck, and if so, what kinda modifications am i looking at?? Also, if i decide to go to a diesel, probally a cummins 4bt, or 5.9 cummins, maybe even a 7.3, what would be required to adapt this trans. to the diesel from the 351?
Keep in mind that i am using the frame from a 84 F350 2x4. I think that the only stuff that i am currently taking from my F150 is the motor, brake system from a 2 ton gmc, and the transmission.
Ok, so i found a strait 10 transmission that came out from behind a 5.9 cummins. My question is, will this fit my truck, and if so, what kinda modifications am i looking at?? Also, if i decide to go to a diesel, probally a cummins 4bt, or 5.9 cummins, maybe even a 7.3, what would be required to adapt this trans. to the diesel from the 351?
Keep in mind that i am using the frame from a 84 F350 2x4. I think that the only stuff that i am currently taking from my F150 is the motor, brake system from a 2 ton gmc, and the transmission.
Junior User
Joined: Jul 2009
Posts: 98
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From: Phoenix, AZ
sounds interesting. maybe this video will inspire you. it's a part 1 of like 5 videos, so watch the others too. sometimes you just have to pioneer stuff on your own.
http://www.youtube.com/watch?v=gkW7P...os=VomM5uqQKj4
http://www.youtube.com/watch?v=gkW7P...os=VomM5uqQKj4
Posting Guru
Joined: Aug 2009
Posts: 2,271
Likes: 2
From: Mexia, TX
I'd say just run a 5.9, you'd save having to figure out a way to mate a different engine to that transmission. You'd still need to make the motor mounts, deal with mounting the transmission and possibly getting another driveshaft, and probably regearing your axle. I'm not sure about the axles if they're Rockwells, from what I've read, there aren't that many gear options for the more common 2.5 tons. They're like 6.50:1 or something.
Also by running a diesel, you could get better mileage. I've heard of guys getting around 20mpg with Cummins diesels in fullsize trucks. With a 10-speed, ain't no tellin...lol
Also by running a diesel, you could get better mileage. I've heard of guys getting around 20mpg with Cummins diesels in fullsize trucks. With a 10-speed, ain't no tellin...lol
Fleet Mechanic
Joined: May 2009
Posts: 1,460
Likes: 6
From: Bay Area, Unfortunately
You will also need an air system on the truck to run the splitter too. As for the engine, I would run the Cummins - you can get a bellhousing adapter easiest for it to the SAE bellhousing. Your next easiest adaptation would be to the 7.3 - you would need the adapter likely from an International truck or go with a Big Block. I do not even know if you can adapt it to a 351. There is a guy on here that is running a 10 speed in his F350, I am pretty sure he did a write up on it.
New User
Joined: May 2004
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My 4BT is in a 74 Cherokee chassis (1/2 ton equiv.) and weighs 5300lbs.
Since the 4BT/6BT's have been used with Chevy, Dodge, Ford, and SAE trans adapters it makes it pretty easy (though expensive) to adapt to most trans.
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Elder User
Joined: Jan 2010
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I think that there is a more cost effective way to adapt the trans to my new 351, rather than to replace the rewire kit and motor. Would it be possible to weld the bolt existing bolt holes shut, then redrill the holes to fit the small block pattern. And, im not sure about it, but if the transmission is too big, then put a steel ring plate in and weld the front to the motor, and the back be bolted to the transmission?
Fleet Mechanic
Joined: May 2009
Posts: 1,460
Likes: 6
From: Bay Area, Unfortunately
I like the thinking outside the box, what aboutmaking your own adapter? I would just wait to do the Diesel and transmission together, but if you have the ability, you might consider making an adapter. The SAE bellhousing is huge compared to a small block one.
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Methanoholic
Joined: Mar 2009
Posts: 6,442
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From: Maine (NorCal Native)
Alignment is critical.
I have made several adapter plates.
You don't get it aligned and all sorts of things go wrong, clutch never works right, pilot bearings get eaten, Input shafts, Input shaft bearings and the list goes on.
And bolt to the block, not weld!
-Enjoy
fh : )_~
I have made several adapter plates.
You don't get it aligned and all sorts of things go wrong, clutch never works right, pilot bearings get eaten, Input shafts, Input shaft bearings and the list goes on.
And bolt to the block, not weld!
-Enjoy
fh : )_~
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Fleet Mechanic
Joined: May 2009
Posts: 1,460
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From: Bay Area, Unfortunately
Weight is going to be an issue. The 12513s weigh about 700 to 800 lbs, so you are looking at about 600 to 700 lbs for the 10 speed I believe. You still need to come up with an air system too run it too. I would love to see a write up on it.
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Elder User
Joined: Jan 2010
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the weight is there but the 350 frame should hold it easy.
Where do the big trucks get the air supply from? I know that the transmission, horns, and brakes are air powered, but where do they get the air from? Also is there a way to adaot whatever that is to the smallblock ford?
Also, I am leaning away from yet another engine change, mainly because i just spent 3000 on the 351. The origional truck was a 81 f150, that went to the 351, that is dyno tested to be 551 horses. the 150 got hit, and it bent the frame, so i pulled the motor and put it in this truck.
Where do the big trucks get the air supply from? I know that the transmission, horns, and brakes are air powered, but where do they get the air from? Also is there a way to adaot whatever that is to the smallblock ford?
Also, I am leaning away from yet another engine change, mainly because i just spent 3000 on the 351. The origional truck was a 81 f150, that went to the 351, that is dyno tested to be 551 horses. the 150 got hit, and it bent the frame, so i pulled the motor and put it in this truck.
Fleet Mechanic
Joined: Apr 2007
Posts: 1,429
Likes: 4
From: patricia ab canada
The big trucks get their air supply from air compressors on the engine.you can get the same type of compressor with a v belt set up,you will have to fab mounting brackets up.the compressor make is Bendix.I used to have one kicking arround,but it grew legs and walked.lol