The question is for mainly EFI injection systems on SBC's but I would think it would in some degree effect carb'ed SBC's as well.

Fuel pumps have two ratings.One is pressure and the other is GPH.I am saying GPH is the volume the fuel pump delivers.

So I am thinking that pressure of the fuel is more related to HP output of a engine.

And I am thinking that GPH or volume of fuel is more related to the torque output of a engine.

Am I correct in those assumptions?Comments please.