4.3 liter io

[nipper]

I had a brand new 4.3 litre mercruiser put in my 1991 V20 Cuddy last year. I have only run it about 10 hours, so it is really too early for me to tell. I had a previous 4.3, and I can tell you it is pretty miserly on the gas. I have never done the calculations. I have never done speed off gps, but the speedo says about 42-45 depending on the conditions at wot.