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!!

You have an OHV (Over-Head Valve) .. 160hp vs 207hp for the SOHC

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.

over head valve VS. Single over head cam
160hp VS. 207 hp
old VS. new

arent the 3.0s OHV? not to go off topic....

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.

yes.

usually the ohv 4.0's tend to be known to run for a while without problems, just keep up maintanance :biggthump

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.

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.

your correct. :biggrin:

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.