New member and hoping for extreme mods
09-06-2011, 03:39 PM
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New member and hoping for extreme mods
Alright I am new here and I am about to buy a 2000 cherokee classic. It has 150k miles on it and is in great condition. My big plans are to do an engine swap. Now I know everyone stands by the 4.0 but its big, heavy, bad gas mileage, and mediocre power. I don't care either if it has an aftermarket. I wanna swap in the 3.7 from the f150 since I have connections with ford. I know its only a v6 but 300+ horsepower is better than any v8 came close to in 2000 for small suv's. So any ideas on where to start and its good to be on here!
09-06-2011, 03:50 PM
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Year: 1999
Model: Cherokee
Engine: 4.0l
Where to start? You're going to have to figure out trans, tcase, and the rest of the running gear. Hope you can fab mounts and be able to figure out all the geometry for your drive line.
....not easy but rewarding
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09-06-2011, 03:56 PM
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I forgot to mention that the transmission (6 speed auto 4wd) will also be borrowed from the f150. Custom mounts are necessary, and full exhaust work will be to as the engine will not come with that and intake work as well (so custom headers is the only possible route, and obviously a CAI). What do you guys suggest for a axle ratio? And do you think new axles would be necessary?
09-06-2011, 04:15 PM
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yeah, this idea isnt so hot. how much tq does that motor actually make? From what I have read, the TQ down low sucks and probably more-so at part throttle. I would say for all the effort that it will take to do this, you are WAYWAYWAY better off with the many other options
Also, I hope that your fab, electrical, diagnostic skills are very good as with a brand new setup like that, you have integrated OBD/CAN, body controls, etc that are going to be interesting to get the ECU really working without. Not to mention that with that 6AT, the engine/trans will stretch from your radiatior to your backseat if their 6AT is anything like their other trannies
Also, I hope that your fab, electrical, diagnostic skills are very good as with a brand new setup like that, you have integrated OBD/CAN, body controls, etc that are going to be interesting to get the ECU really working without. Not to mention that with that 6AT, the engine/trans will stretch from your radiatior to your backseat if their 6AT is anything like their other trannies
Last edited by Hoooper; 09-06-2011 at 04:19 PM.
09-06-2011, 06:53 PM
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I am aware. The 4.0 makes what ....max 225 lb/ft, granted the large displacement, i am sure it comes pretty low in the rpm range.
The 3.7 makes 278 lb/ft. In the mustang low rpm torque is a little low, but that is tuned differently than the same 3.7 in the f150 which has slightly less horsepower, but was tuned to have more low end torque.
And its not just for wheeling, it gonna be somewhat of a dd too.
I'm fairly experience with engine diagnostics and I have friends in the business so I am not worried. I have gotten the area specifications nailed down so everything (technically speaking) should fit just fine, including the tranny.
The 3.7 makes 278 lb/ft. In the mustang low rpm torque is a little low, but that is tuned differently than the same 3.7 in the f150 which has slightly less horsepower, but was tuned to have more low end torque.
And its not just for wheeling, it gonna be somewhat of a dd too.
I'm fairly experience with engine diagnostics and I have friends in the business so I am not worried. I have gotten the area specifications nailed down so everything (technically speaking) should fit just fine, including the tranny.