Engines with lack bottom end power?

mgoblue9798 said
Problem is that dyno test usually start at 3,000rpm, a few at 2,500, so there is not much info about torque below those rpms.

True, so far I haven't found any under 2000 rpm dyno results, so yes it's at best guesstimation from what info we have at 2000/2500/3000 rpm. But in a race or even a good part throttle take off from a standstill like a traffic light you spend almost zero time under 2000 rpm.

And even for normal driving under 2000 rpm say were probably taking 250-350 lbs-ft for the average V8 at around 1500 rpms is 71-100 hp every 100 lbs-ft equals 29 hp, 14.5hp per 50 lbs-ft. Not a huge range in hp and not much hp needed down there, normal a slant 6 makes more than enough for typical driving probably at 100-200 lbs-ft, 29-58hp.

Not saying it has no effect but to me it's doesn't seem a lack of bottom end torque is the issue in itself

Phreakish said
Part of it is relative power.
Making stock torque levels will never really feel powerful. It feels "soft" because 2k more rpm and suddenly you're pinned in the seat.

Except maybe in the way Phreakish pointed out basically the more top end power the greater the gap in power will be from the lowest rpm power since there's little you can to increase it substantially making it seem relatively weak.