Oooh....Still got the 35?
That's not going last, I killed mine with a 2.5.
Ended up with a custom 35 spline D489 @ about $3400.
YJ Hemi conversion
- Thread starter Donkey
- Start date
That's not going last, I killed mine with a 2.5.
Ended up with a custom 35 spline D489 @ about $3400.
Suspected as much...Please do not get yourself killed with that beast!!
And I'm sure it is a beast...
So couple hundred miles in now. Any gear will do. First not needed, second new first, third second first, and 70 mph is the new 55. I am worried about the tiny rear driveline and D35. I need to upgrade before they blow. Salvage some money by selling them.
It is now officially done. All the hoses hooked up, all the welds painted, and function tested. Thank you everyone for the support and advice. I hope this write up will encourage and help those in the future. Remember, engine swaps are only limited by your imagination and will power. Please reach out to me if you need any help in return.
Don M
Don M
Ok. I need some info from you. Do you have what flywheel to get? And measurements for the motor mounts, so I can weld them in at the right location.
The flywheel was out of a 07ish Dakota 4.7. Any 3.7 4.7 5.7 flywheel should work if its internal balanced 8 hole. I used the holley black heart mounts and they went in exactly as described. I loose set them to verify and they ended up just as described. Holley has the instruction on their website. I used standard Chevy ls rubber inserts but had to grind off the locating tabs.
Sweet. Thank you. I got a bellhousing out of a liberty since I saw that it would work, then realized I had to use a 10 3/8” flywheel, and I’m guessing that I may not find the flywheel to mate to the engine. And thanks for your diagram on the pilot bearing, just made one!
Once I get back from my deployment, I’m probably going to have a lot of questions for you.
The 3.7 flywheel should bolt up that I know of. The 11" Dakota clutch is about what I would say is minimum though. And consider upgrading the traction devices.
Any thing I can help with just let me know. I have about 3000 miles so far and the only issue was the clutch master. The master barely puts out enough volume to disengage the new clutch disc.
I appreciate it! I emailed someone about the Dakota bellhousing, it’s like trying to find gold. It’s out of a ‘94 with the 3.9 v6. I’d rather go that route than try and find a smaller flywheel. So we’ll see. Then I guess I need to figure out how to swap to an external slave.
Just look at my part breakdown. You will need the slave assembly off a 90's Dakota and a new nose adapter for the AX15. All readily available. I used the stock YJ master with a braided hose from fleabay. Advanced adapters has a complete setup too for a couple hundred bucks.
Thank you! I swear, I’m glad I ran across your post, you’re the only one who’s documented this stuff.
I made this post because I had to piece it together. I figured it would help if someone broke the process down. The amount of stock parts is nice and only had a couple home made units. PS you don't need to detune the PS pump and the wheel turns like a Cadillac.
Well it’s def come in handy, so props! I talked to Chris at Hotwire auto, big help too, great dude. I’ll be getting the harness and computer from him. I as going to do a Holley terminator, so I didn’t take any wiring or the computer. After reading up on the terminator, all I see is mounted and mounds of people with issues with them, so, Hotwire it is. Now you said the PS pump, you mean the one that comes off the hemi makes it turn like a caddy? That’s sweet.
That is correct on the ps pump. I used the stock hemi pump with an adapter to the YJ gearbox. I made a short hydraulic hose with the right ends for about 15 dollars. I was El Cheapo with wiring so I had the stock harness and programmed ECM. Using a stand alone would have been alot easier but costly.
Yea. I’m not a wire guy. I hate wiring. Hate it. But I have to rewire the whole jeep anyways (full wire harness is sitting on my shelf), so I would like to make at least one part of it easy. Hah. But that’s good to know about the PS pump, I planned on trying to use it anyways, since the one on my 4.2 leaks and didn’t really think it would fit anyways. I knew putting a hemi in as going to be confusing as hell just cuz nobody did it, till I found this post. And couldn’t go wrong for a $400 engine either. Figured that was cheap as shit for a hemi.
But the drawing you put on here. Big… big help and kudos for getting that information out… luckily on of the guard guys I’m deployed with is a machinist by trade… 
