Verado 350 sci engine height
 

Hi,

I hope you all are well

We will start rigging my Phantom 25 next week. Almost all parts are now in house, included a very nice Gorilla jackplate. I have read about the issues about blow out and water pressure using the 2nd generation gearcase of 350 sci. Lets hope the new Poseidon is faster. Since I use a 20 inch midsection on a 25 inch transom, its important to get the jackplate mounted correctly. The reason for using a 20 inch midsection is to get the COG as low as possible. 350 sci is a tall engine, although its only 12 cm taller than a Promax 300

I wonder how high the 350 sci propshaft can be run before loosing waterpressure. I need it to be approx. 2-2,5 inches below the bottom to receive the top speed I need. I did have a Promax 300 some years back, and 2 - 2,5 inches below was spot on. I do not want to add a nosecone, as it will slow me down. Estimated speed will be approx. 82-83 mph. The Promax 300 (not X) pulled the boat to 76-77 mph.

The propshaft height will be approx 3,5 inches below at cruise (plus the fact that the water hits the prop higher due to 4 1/4 setback.

Look forward to hearing back from you.

All the best, Toffen

Verado 350 sci engine height
 

Hi,

Any ideas?

Cheeers and thanks! Toffen

Send us pictures. We just rigged our new 41 w/ 3 - 300 hp Verados and went all the way up on the bracket.