Engines with lack bottom end power?

forphorty said
I saw a dyno operator (Richard Holdener IIRC) explain that the numbers taken at the very bottom of a dyno pull can't be regarded as accurate because of the way the dyno is loaded and the throttle is applied. This is why you sometimes see a dip in the curve immediately after the start of the pull and then it comes back up.

I've heard him talk and you can see on some graphs a 10 ish tq uptake at the beginning of the run

forphorty said
Anyways... I would bet that using 273's examples of the 360 300 hp vs 380 hp ,even though the numbers may be similar at 2500 , the 380 hp would be down a fair amount at 2000 . 500 rpm can be significant when we're talking long overlap cams.

It's possible but I have a hard time believing it drops of like a waterfall, could see the 380hp loss of torque at a higher rate but think they both are 380 tq at 2500 rpm which is a fairly high amount of torque and it's pretty easy to fill the cylinders at low rpm and even a stock stall should even get you to 2000 + rpm without much effort negating for the engine to make much 2000 and less rpm.

But yes could be a/the contributing factor especially part throttle cruising.