derek o Posted May 25 Share Posted May 25 It needs engine I got the whole combine 7720 turbo Quote Link to comment Share on other sites More sharing options...
acem Posted May 26 Share Posted May 26 I think you will have alot of problems installing the engine from a JD 7720 combine into the truck. Quote Link to comment Share on other sites More sharing options...
derek o Posted 10 hours ago Author Share Posted 10 hours ago What should I use Quote Link to comment Share on other sites More sharing options...
Dirt_Floor_Poor Posted 10 hours ago Share Posted 10 hours ago 37 minutes ago, derek o said: What should I use What are your expectations? I would think that a donor vehicle with an engine, clutch and transmission already bolted together would be the easiest. This will likely require you to fabricate all the mounts and driveline. I doubt you will find anything that will bolt right in to that truck without a lot of work. I saw @R190 comment that a RD gas engine is the only thing that will bolt right in and anything else is going to require a lot of creativity. I think that is an honest assessment from someone who obviously has a lot of knowledge. Quote Link to comment Share on other sites More sharing options...
derek o Posted 9 hours ago Author Share Posted 9 hours ago So why not the 7720 Quote Link to comment Share on other sites More sharing options...
Dirt_Floor_Poor Posted 9 hours ago Share Posted 9 hours ago 25 minutes ago, derek o said: So why not the 7720 If you’re a skilled fabricator, there’s no reason it wouldn’t work. Finding a clutch, flywheel, and figuring out how to mate it to a transmission would be the main problem. As well as building the motor mounts and making sure the cooling system is adequate. But, those are not impossible to figure out. It just depends on you or the person you hire to get it in there. The way the governor is set up in the combine is surely different than in a truck application, but that would be easy to correct. Depending on how you are using it, I’d think that stock 7720 may be a little short on power. I’d love to see the pictures of this truck and its progress if you go ahead with it. Quote Link to comment Share on other sites More sharing options...
R190 Posted 4 hours ago Share Posted 4 hours ago You can make it work, GM put John Deere engines in a few trucks in the late 70s or early 80s . you just need to find compatible components from the crankcase back all the linkage, mounting , cooling ,braking, and air induction systems besides the drive line components which depend on the transmission you elect to use. It all depends on your skill level ,your stock of cash, and a little luck. You could try going on a JD forum and ask if any one has one of those GMs or has tried a similar conversion into any brand of medium duty trucks. Good luck. Quote Link to comment Share on other sites More sharing options...
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