- Joined
- Jan 29, 2010
- Messages
- 2,259
- Reaction score
- 615
- Points
- 113
- Location
- Central Indiana
- Vehicle Year
- 2000
- Make / Model
- Ford
- Engine Size
- 3.0
- Transmission
- Manual
Area under the curve is one thing, and it's a big one, but based on peak numbers the 4.0 SOHC isn't really significantly more powerful or torquey than the 3.0 relative to it's size.
According to the Tech Library here:
The 4.0 SOHC had 207hp @ 5250rpm and 238ft-lbs @ 3000rpm. 51.75hp/L and 59.5 ft-lbs/L
A '00 3.0 OHV had 150hp @ 4750rpm and 190ft-lbs @ 3650rpm. 50hp/L and 63.3 ft-lbs/L
The 4.0 SOHC was designed in the mid 90s. The 3.0 was designed in the early 80s. 15 years of progress and a much more mechanical complexity didn't really gain as much as people might think. If anybody can find the actual torque curves for either engine that might show a bit more of a difference to justify the changes.
Seems like most of the 4.0 SOHCs went into heavy trucks with 4WD, extended cabs, etc. I'd bet that a 2wd/3.0/manual/regular cab truck could probably move just as well as the more powerful and torquey 4.0 truck with the extra 1000lbs of options they typically had to haul around.
According to the Tech Library here:
The 4.0 SOHC had 207hp @ 5250rpm and 238ft-lbs @ 3000rpm. 51.75hp/L and 59.5 ft-lbs/L
A '00 3.0 OHV had 150hp @ 4750rpm and 190ft-lbs @ 3650rpm. 50hp/L and 63.3 ft-lbs/L
The 4.0 SOHC was designed in the mid 90s. The 3.0 was designed in the early 80s. 15 years of progress and a much more mechanical complexity didn't really gain as much as people might think. If anybody can find the actual torque curves for either engine that might show a bit more of a difference to justify the changes.
Seems like most of the 4.0 SOHCs went into heavy trucks with 4WD, extended cabs, etc. I'd bet that a 2wd/3.0/manual/regular cab truck could probably move just as well as the more powerful and torquey 4.0 truck with the extra 1000lbs of options they typically had to haul around.