i have you a 97 f250 7.3 liter diesel auto with 4.10 gears , the valve says 225 hp@ 3000 rpms ,7.3 liter 445 cubic inches so my question is the valve cover right or do they make more horsepower ? p.s mine is all stock

 

Valve cover is horsepower rating at the crank. Rwhp will be somewhere around 170.

 

How much torque at the crank stock?

 

IIRC...425 lb/ft [EDIT: See Below post]

Robb

 

What I have compiled from different places,
94.5 thru 96
215 HP @ 3000 RPM and 450 ft lbs @ 2000 RPM

97
225 HP @ 3000 RPM and 480 ft lbs @ 2000 RPM

 

Dave, thanks for the correction. Question...what was the change that the '97's had for a couple extra HP & lb/ft's?

 

My information is from several different places, so I am not going to say it is completely accurate/gospel truth.

It seems if you look in several places, you come up with several answers, which are different.

Also notice there was no mention of California trucks, which are again different.

As far as I know, the differences were all in the computer flash version.
I don't remember exactly when the IDM voltage increased to 120 volt, but that is the only other thing that comes to my mind quickly.

 

I believe that was in 98 with the change to the SD Dave.
FWIW, my 96 is a CA model with split shot injectors- valve cover says 215 hp. My E99, with essentially the same setup (different turbo and IDM) said 250 on the valve cover.

 

I believe the 97 HP rating was increased strictly with a "hotter" stock tune.

I have driven my truck with a 97 PCM, and it does have a little more punch...

 

The stock as far as I know IDM in my 97 was a 120 volt unit.
And I do believe the 99 and up Super Duty has a 140 volt IDM, but again I may be wrong.

I have 250 HP @ 2700 RPM and 500 ft lbs @ 1600 RPM for the 1999 and 2000 engines.
Part of that came from the down pipe, the rest from the IDM, electric fuel and PCM tunes I guess.

My info shows 275 HP and 525 ft lbs torque as the top stock numbers for the 7.3 in a manual tranny F series 2001 thru 2003.

 

Super Duty's all use a 120 volt IDM.

I've never checked the voltage on OBS trucks, but IIRC, they are 100.

 

the IDM in my 97 was 110v stock.

 

they do have a 100 that what mine is i think the 120 came out in e99

 

my 97 idm was 100V

 

The 140v IDM is the result of the IDM mod... no factory IDM that I'm aware of was ever rated at 140v. My memory is hazy now, but I'm pretty sure the E99's have a 110v IDM and the late 99-03 had the 120v IDM. My 96 CA emissions truck has a 100v IDM.