What kind of distance/ mileage will I get out of my 65 gal. gas tank with a 454 mag running 3500-4000 RPM?

Thanks,
RJ

Someone posted this on one of the boating sites. May have been here on OSO.

http://www.boat-fuel-economy.com/mer...ion-us-gallons

Not even close to correct...ran a poker run for 4 hours at 80% at 4000rpm or better with 7 people burned a little over a 1/4 of a tank. Oh, and running 70mph at 4000.

Tantrums only hold 65 gallons?

you must be spinning 32 props 70 @ 4000

About 4 hrs of run time at 3500rpm. with that motor you might be doing 40 mph so 160 miles or less roughly...

when i had my new tank built a couple of months ago the math showed 69 gallons

I would bet you are going to safely get 2mpg so 130 or so miles.

You are correct.

What hp you making and top speed with the 32s, labbed or stock.