Dyno Test Results

Without torque ratings I cannot know if she is all out on the dyno. Your horsies spike at two different RPM values making for a somewhat unsmooth chart. (once at 1460 and again at 16xx) with a average of 350.

You did not specify what HP rating and torque rating of that particular engine, there is nothing to compare it to. Today's Mack MP8 will give you roughly 415 to 5xx hp and a torque rating that is around 1600 or so give or take.

I hate to be difficult, but eh, that engine has been through alot it seems. The coolant temperature combined with one of my rules "A ten pound drop in engine oil pressure combined with a coolant increase in temp plus a increase in oil temp says a engine is getting too hot." but without pyrometer and other data I cannot collaborate. (Had a hard time fitting that last sentence together.)

She likes to run at 185 or so degrees, but when loaded up by the dyno and started to get hot, your boost started getting shaky and your oil pressure not so steady.

I need more input. But if this is all that is then I would not want that truck. I don't really know for sure, I don't have anything else to compare it to, but remember many trucks in the 500+ hp range that did well.

 

It did show 404, but generally more 350ish most of the time.

It's not bad. For a 460 I suppose that's going up there in years. The more I thought about it is this, if you are in a relatively flat area for it to run about like say up and down 95 on the east coast, you would be pretty happy with it. But if you were running mountains it's going to struggle a little bit if you push it.

 

Looks good to me - 86% of rated HP.

The CCP - is that stated in decimal tenths of an inch?

 

That’s blowby, measured in inches of water.

CCP - Crsnk case pressure - amount of combustion gases escaping past rings - worn cylinders.

 

My concern is really low CCP numbers on engine with lot of hours and miles. was it measured correct?

 

Pressure measured in inches of water