2.9L Vs. 4.0L
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Senior User
Joined: Sep 2001
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From: Massachusetts
2.9L Vs. 4.0L
I have an '90 Ranger 4x4 longbed with a 144,000 mile 2.9L V6 leaking oil. I think it makes 150 hp and 150 lb. ft. of torque. I'm thinking of replacing it with a 4.0L. What's the horsepower and torque ratings for the 4.0L V6? Would a swap to the 4.0L make a difference? How crazy can you get with the 4.0L? I saw a Dakota last night with a dual exhaust and I'd like to run with or beat a truck like that one.
Post Fiend
Joined: Jan 2003
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From: Connecticut
The easiest swap would be a 4.0L OHV which would essentially bolt right up. Plenty of low end torque but your only looking at 160-165 hp depending on the year. And it's not like there is a huge aftermarket regarding performance parts.
Have you thought about dropping in a 5.0L?
Have you thought about dropping in a 5.0L?
Senior User
Joined: Aug 2004
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From: Fort Wayne, IN
Originally Posted by NitrousAl
I heard it would eat up the stock transmission, transfer case and 7.5" rearend. I'll take a look at turbocharging the 2.9L. That might be the easier way to go.
. I think the only thing you'll kill with that 4.0L is the transmission. I don't know if you have an auto, but I was reading that the auto 4.0L tranny has harder parts than the 2.9. My friend has a 5.0L H.O. EFI on a 7.5" in a ford fairmont station wagon and is doing fine. I'm pretty sure the 4.0L has more power than stated as well, but you'll have to check the year. You can get pretty crazy stuff for these engines. I converted my 2.9L to MAF to put a non-computer friendly cam in. The weight to power ratio is good. It's getting harder and harder to find these performace parts though.
You'll see a big difference with the 4.0L (stock wise). It's a good engine. The 2.9L is also a good engine, just smaller displacement and different ignition system. I would take a 2.9 over a 3.0 (I'm all about my internal cam engines). I haven't rode in a performance 4.0L, so I don't know which I would take. My 2.9L is awfully fast, but I imagine a tweaked out 4.0L would destroy.
Good luck with the turbo. You'll have to let me know how to turns out. I want to turbo mine as well, but still saving for it.
Pete
Junior User
Joined: Jan 2005
Posts: 50
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From: Sierra Mountains
I have a buddy that had a '92 4.0 with a Paxton blower. I dont kow what the hp was but I do know it was EXTREMELY difficult to keep the tires from spinning in 1st & 2nd even with 33's and stock gears. Plus I have a buddy with an '87 with built 2.9 that can't keep up with my '94 4.0 supercab 4x4 with shell and lumber rack.These are just my experiances and opinions,but I prefer the 4.0.
Good luck
P.S. His ex. totaled the '92 thats the only reason it is not on the road any more.
Good luck
P.S. His ex. totaled the '92 thats the only reason it is not on the road any more.
Postmaster
Joined: Dec 2004
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From: Maple Valley, WA
Originally Posted by Psychopete
You'll see a big difference with the 4.0L (stock wise). It's a good engine. The 2.9L is also a good engine, just smaller displacement and different ignition system. I would take a 2.9 over a 3.0 (I'm all about my internal cam engines). I haven't rode in a performance 4.0L, so I don't know which I would take. My 2.9L is awfully fast, but I imagine a tweaked out 4.0L would destroy.
Pete
Pete
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Post Fiend
Joined: Jan 2003
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From: Connecticut
Originally Posted by RacinNdrummin
The 3.0 is an internal cam OHV engine.
The Ford 3.0L "vulcan" found in the Ranger and Aerostar are OHV engines.
The Ford 3.0L "duratec" in the Escape is a DOHC design.
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Joined: Feb 2005
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From: Lewiston
2.9 to 4.0
I was wondering if you ever did the swap. I also would like to swap my 90 4x4 5speed. The only problem I have ran into so far is, what is required to do the swap. I know that I need the tranny and of course the engine, but what about the wiring and the computer.
Seafire
Seafire
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Joined: Apr 2006
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Originally Posted by NitrousAl
I have an '90 Ranger 4x4 longbed with a 144,000 mile 2.9L V6 leaking oil. I think it makes 150 hp and 150 lb. ft. of torque. I'm thinking of replacing it with a 4.0L. What's the horsepower and torque ratings for the 4.0L V6? Would a swap to the 4.0L make a difference? How crazy can you get with the 4.0L? I saw a Dakota last night with a dual exhaust and I'd like to run with or beat a truck like that one.
did you ever swap your 2,9 for the 4,0? I'm looking to do the same with my 2,6 for a 4.0 but I'm told that there are difficulties with enginemounts, sizes etc.
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