Mercury Marine Launching V-10 Verado Outboards

[TripleB]

Originally Posted by Zone 5

The old V6 300, the 350 and 400 were all the same motor with different programs. You used to be able to get a 350 programed up to more than 450, but Mercury clamped down on something and that went away, except somewhere on the dark side.

I assume you meant L6 and not V6, and yes they were the same motor except for programing
And FWIW the 350 was about 325hp and the 400 was about 370 hp, I asked the guy at Mercury who did the programing for these about the 450hp claim and was told any more programing , fuel, boost and etc produced very little extra power but put a ton more heat into the motor

[Zone 5]

Originally Posted by TripleB

I assume you meant L6 and not V6, and yes they were the same motor except for programing
And FWIW the 350 was about 325hp and the 400 was about 370 hp, I asked the guy at Mercury who did the programing for these about the 450hp claim and was told any more programing , fuel, boost and etc produced very little extra power but put a ton more heat into the motor

yes L6. confused the new V8 300's I had and the others

The story I got on my 350's was that they made 350+ on 93 and less on 87 or 89. No clue if its correct, but I never saw any difference more than maybe 1 mph running 93 vs 87 or 89.

Interesting on the quote from the Merc guy, because even Whipple was selling the reprograms with the HP claims and not saying they wouldn't fudge numbers but it would be easy to tell on the boat if they were true or not.

Kinda a moot point, as my S/C's are blue now.