[Richard Hudgins]

Hi Folks,

First I know nothing about NOS systems. Or for that matter drag racing which is where one would apply this system.

But, I have small problem with the pump size thing.

The question was the size of pump with a 535 hp 460 engine with NOS. (Remember, I know nothing about NOS.)

OK. Here goes. Lets assume that the above engine is running on the rich side at .48 lbs per hour per horsepower.

Therefore: 535X.48=256.8 lbs of fuel per hour at peak output.

Therefore the gallons per hour required is: 256.8 lbs divided by 6.5(What gasoline weighs)=39.50 gallons per hour.

So, my question is this.

Why does one need a 110 gph pump?

Of course there is the question of: are the pumps guys telling the truth?

Or are your fuel system pressure drops so severe that you are not getting the output assumed.



I would really like the answers to the above. Help me out here.