Stop in for a cup of coffee

OK.. i get that on a chassis dyno there are torque multiplication factors from gearing and parasitic losses...... I'm just looking at engine dyno stuff (which seem to use about 3k as their bottom rpm range). But if any engine makes 300 lb-ft of torque at 2626 rpm, horsepower is half that? Math says so... and if it makes 400 T, HP is 200???? Just trying to wrap my head around it. Seems the 'gap' between HP and torque curves should look the same (or similar) for any engine (granted it's torque producing properties could make the slopes of the lines radically different, but the numeric 'gap' should remain the same, percentagewise).. i may be high tho...

Don't forget, engines rarely have a smooth, no dip in power , power band. Little dips can affect things and the curve over the rpm band.