Originally Posted by thisistank

My 97 Baja 24 Outlaw came with a 454 from the factory. Boat weighed about 4500 lbs. I pulled the 454 and dropped in a fresh 525SC in 2000. You definitely can keep out of the boost and obviously save fuel but in the end, carb'd big motors suck lots of fuel and add a blower on top, it sucks even more. They weren't built with fuel efficiency in mind. Like Griff said, I was figuring around 1 mile per gallon too in both the baja and our Top Gun. So you have 54 gallons, you're good for 54 miles, stay out of the boost and I'm sure you could get into the 75 - 80 mile range.

Originally Posted by phragle

for comparisons sake... with a 330 hp 454 I was right at 60, raised the x 2.25 or so, and a rather warmed up 525sc has me at 83 and still playing with props.

Originally Posted by phragle

Originally Posted by flat rate

We had a new 1999 42 fountain with trip 525sc They were great engines and way conservative. They said they burned 60 gallons a hour at wot x3 and I would agree. The fuel burn plus premium fuel was stupid and back then it was $5.00 a gallon. We put high altitude pulleys on and it helped. I’m sure they could be leaned out a bit to help the fuel burn. They didn’t need the 1050 dominators on them. That being said you won’t hurt them they will
run forever !!