Four Winns Prop


I own a 93' Four Winns 190 horizon i/o with a 5.0 302 ford engine (I apologize for not knowing the horsepower). Itís really a great boat...the original owner as well as myself are very anal about it's upkeep. I live in the mountains of Colorado and travel 1 or 2 times a year to lake powell in so. Utah/no. Arizona. However, my wife and I have found ourselves exploring several of Coloradoís lakes this summer. The raker stainless prop on the boat is a great prop for lower altitudes, or so I was told. I was wondering what type of prop you might suggest I use in Colorado. I believe my boat's max throttle at say 8,000 ft. is about 4,000rpm and approximately 36 mph/38-39 mph at 1/2 trim up. Incidentally, I usually have 2-4 people in the boat with me and very little extra weight. My goal is to have a faster hole shot and a higher top end if possible. But, I don't want to hurt the engine. I can accept the current performance if that is all there is.

Just thought Iíd ask!

Sincerely, Britt Bishop


Drop down in size a couple of inches and go for a Viper prop or something similar. These work better when power is down. The altitude will eat up 3-4% per 1000 ft.




Please submit whatever questions you have to  All questions and answers selected will be displayed on this page as they come in.  Note: though all boaters are welcome, priority may be given to I.H.R. members.  Randy can not be held responsible for any advice given.  Though his information and expertise is second to none, he has no control over what you do with your boat.  It is up to you to boat safely and act responsibly, and his advice is only to be used as a guidance for your high performance boat/motor of which you are the one responsible for the risks involved.

Mark C.


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