Difference between OHV and SOHC 4.0 - Ranger-Forums - The Ultimate Ford Ranger Resource


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

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Old 03-06-2007
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Difference between OHV and SOHC 4.0

I have no idea what i have in my rig expect that its a 4.0L V6. Its a 98 XLT 4x4. I know SOHC means Single Overhead Cam, but what does OHV mean? Which engine is better? My rig has 142,000 miles on it and it is still running like a champ. My check engine light is on but thats because I need a new MAF. For whatever engine I have, what are some good tips you can give me for my mileage and to get the most life out of it? Thanks guys!!
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Old 03-06-2007
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You have an OHV (Over-Head Valve) .. 160hp vs 207hp for the SOHC
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Old 03-06-2007
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OHC is what you have. the SOHC was introduced in '01. Horsepower & torque numbers were dramatically changed. The SOHC makes 207hp/238tq at the flywheel. Ohv mean Overhead Valve. I know bob will post specific specs/differences.....I would, but I gotta go to work.
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Old 03-06-2007
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over head valve VS. Single over head cam
160hp VS. 207 hp
old VS. new
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Old 03-06-2007
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arent the 3.0s OHV? not to go off topic....
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Old 03-06-2007
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Wow, great info guys, so thats why my rig seems a bit slow for a 4.0 V6 and the newer ones seem a bit quicker.

So, with the OHV is there anything that is a common issue or problem (besides the 47 lost horsepower) once they get a little high in mileage? Im at 142,000 and just wondering if I should start to look out for somethings.
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Old 03-06-2007
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Quote:
Originally Posted by Ranger Kid17
arent the 3.0s OHV? not to go off topic....
yes.
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Old 03-06-2007
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Quote:
Originally Posted by BigRed911
Wow, great info guys, so thats why my rig seems a bit slow for a 4.0 V6 and the newer ones seem a bit quicker.

So, with the OHV is there anything that is a common issue or problem (besides the 47 lost horsepower) once they get a little high in mileage? Im at 142,000 and just wondering if I should start to look out for somethings.
usually the ohv 4.0's tend to be known to run for a while without problems, just keep up maintanance
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Old 03-09-2007
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Quote:
Originally Posted by telemaster1952
usually the ohv 4.0's tend to be known to run for a while without problems, just keep up maintanance
well, that makes me feel a lil better bout my truck, i have a 94 with aobut 178,000 miles on her, she's deffinately due for a good tune up tho, which i will do sometime in the next...oh, lets say 8 months while i dont have a license haha.
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Old 03-10-2007
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On the SOHCs, isn't there a cam above each cylinder head??....hence the single overhead cam?? I know DOHCs have dual cams above each cyl head.

I havnt actually dug into the internals of our engines.....but if it were a small block chevy, I'm a stud when it comes to tearing into sbcs.
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Old 03-10-2007
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Quote:
Originally Posted by Fx4wannabe01
On the SOHCs, isn't there a cam above each cylinder head??....hence the single overhead cam?? I know DOHCs have dual cams above each cyl head.
your correct.
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Old 03-10-2007
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Quote:
Originally Posted by telemaster1952
over head valve VS. Single over head cam
160hp VS. 207 hp
old VS. new
I actually like my OHV engine better then my new SOHC
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Old 03-11-2007
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Quote:
Originally Posted by redranger4.0
I actually like my OHV engine better then my new SOHC
I wish I had an OHV. Freaking stupid crappy first year Sohc....pos.

The OHVs are known for longevity(however your spell it). Known for long life. I guess the 3.0L Vulcon just won't die.....they like an energizer, they keep going and going and going.
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