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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 09-12-2009
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horse power differences???

i know i have seen the answer somewhere but i cant seem to find it again... what is the horsepower/torque differences between the OHV engines and the SOHC engines? and more specifically is there a difference in power between certain years of the SOHC????
thanks a lot guys
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Old 09-12-2009
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Not on the Ranger platform


The same engine is used in Explorers and Mustangs too....differently tuned. I think in the stang the output is 215hp.



Sorry...havn't a clue on OHV stats other than they have better torque down low compared to the SOHC.
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Old 09-12-2009
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ok i was wondering because i have heard people say the 2004 and up engines have 200+ horsepower and previous SOHC engines are rated at about 160?? but a friend of mine has a 1994 b4000 OHV and he says his is rated at the same power
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Old 09-12-2009
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Originally Posted by ranger4.0 View Post
ok i was wondering because i have heard people say the 2004 and up engines have 200+ horsepower and previous SOHC engines are rated at about 160?? but a friend of mine has a 1994 b4000 OHV and he says his is rated at the same power
ever since the SOHC has been offered in the rangers it was rated at 207 HP and something like 245 FT pounds. the ohv was somewhere around 160 HP or something.
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Old 09-12-2009
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The OHV is rated at 160hp 225tq.

The Ranger SOHC is rated at 207hp 238tq.

The newer SOHC in the Mustang and Expos rated at 210hp 245tq.
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Old 09-12-2009
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They need to put that new ecoboost motor with like 315hp in a ranger stock
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Old 09-12-2009
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Originally Posted by btm757 View Post
They need to put that new ecoboost motor with like 315hp in a ranger stock
HELL YES!

Twin turbos FTW!

The wiring would be a beotch im sure, but I almost bet it would bolt up to a 3.0 Vulcan tranny since it is a duratec based engine, and the older ones shared the FWD bolt pattern with the 3.0.

By the way, the 3.5L V6 version makes 340 HP and 340 Lb/Ft of torque.

Last edited by 05prerunner; 09-12-2009 at 03:27 PM.
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Old 09-12-2009
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Quote:
Originally Posted by Riceman View Post
The OHV is rated at 160hp 225tq.

The Ranger SOHC is rated at 207hp 238tq.

The newer SOHC in the Mustang and Expos rated at 210hp 245tq.
thank you riceman!!! i think that was what i had seen before. and it answers my question. now i have another one for you... can trucks with the SOHC tow more? my friends 94 b4000 seems to struggle a little hauling around our figure 8 race car.
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Old 09-13-2009
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The SOHC should pull better than a OHV. The main complaint people have is that the SOHC is a dog at low RPMs and that the OHV is better at low RPMs. In reality, the SOHC just seems like a dog down low because it has so much top end. Go look a at a SOHC dyno run vs. an OHV. They make the same power through about 2k RPM and then the SOHC shoots up and away from the OHV.

The OHV is a capable hauler if properly equipped. The main thing is tire size/gear ratios. A 3.27 gear ratio is going to struggle to get a trailer moving, but a 4.10 ratio shouldn't have much trouble. Taller tires with improper gears are also going to hurt a lot when hauling.
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Old 09-13-2009
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OHV takes more kindly to larger tires w/o gear change compared to the SOHC.

I still wish I had pushrods.
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Old 09-13-2009
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HP and TQ on a dyno don't mean everything when it comes to drivability.
While the SOHC definitely makes more power, it does it at higher RPM.
I know on a dyno the curves seems similar at lower rpms but they don't drive the same.
Take it however you want but the OHV has more low end grunt and just pulls harder at lower RPM than the SOHC does. However the SOHC takes the cake at higher rpm's without question.

I have owned two 4.0L OHVs and 1 4.0L SOHC. But I have driven a ton (dozens) of different rangers/explorers with different combos of transmissions and gear ratios and I still have the same opinion.

From what I can remember, Riceman has the correct numbers.
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Old 09-13-2009
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thats what i was thinking. he is running 31 inch tires with 3.73 gears. the truck has 350 000 km on it so i think part of it is just engine fatigue. thanks alot guys. you have managed to answer all my questions
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