[1blackbb66]

I think your OK Mark.
I'm sure there is some one out there that could give all the data on brake specific fuel consuption per engine and horsepower leval but here is the laymans (my) method of calculating.
If you going 60 MPH in your car your probably getting about 10 MPG. This translates to one mile per minute or ten minutes to burn one gal of fuel. Your pump will put out 72 GPH which is 1.2 GPM, 10 min = 12 gallons in that 10 minutes, no problem. If you were going 120 MPH, now you would probably only be getting 4 MPG. This is 2 miles per minute and it would only take 2 minutes to burn one gal of fuel. In 2 minutes your pump will still keep up as it would put out 2.4 gallons in that 2 minutes so your still well within the pumps capacity.
Now if your going 150 MPH and..........................

Ray