What are you guys seeing stock? Are they pulling close to what they are rated. I know my old Hemi truck would only pull 280ish and it's listed 340hp at motor. My SRT4 will dyno 215-220 and it listed as 215. So are they underated? My brother in-law has a new F350 and he dyno'ed at 422whp after mods. Just wondering how much I'd need to stay ahead.

 

If you go dyno your truck on a dynojet.........Stock....you will probably see about 270-280hp and 500-550lbs torque.

Who knows what you will see if you dyno on a Mustang.

 

on a mustang with a good operator you will see the same numbers. the one you guys had unreliable numbers from I would stay away from.

 

You will see the same numbers on the same Mustang. They are very reliable and work well. With each different model you will see different results. If you use a Mustang, just go back to the same one, you cannot flop around.


Quad

 

I was hoping it was underated like my SRT. Oh well.

 

The 325hp/610tq rating is at the flywheel.........so there will be some driveline loss thru the tranny, driveshaft, rear axles...etc.

Don't worry though, you can turn that Cummins into a beast if you build it up right. You will have no problem smoking your brother-in-law in the F350 if you spend the money in the right areas.