Mercury 350 OptiMax

[XSive]

Why would they make a 4 liter twin turbo verado when they can just increase the boost on the one they have now and get a easy 450 hp. The lower unit is the problem they havent made any more power with them.

DUh, he's joking around....

[spareparts]

they arent even close to approaching Formula 1 HP to CID ratios yet... there are stock automobiles out these days with long warranties that exceed the cid to HP ratio that the verado is... shelby cobra with the ford motorsports 750 kit... is 2.3 HP per CID and carried a 36K mile warranty... the GT40 can easilly exceed 1000 hp with stock fuel system and factory shortblock.. out of a 330 CID engine... for over 3HP per CID... there are other combos out there as well... 700 RWHP 2.5L Evo's.... they arent even into race fuels teritory yet..... they could build a verado to require 112 and then even 700-800 would be totally possible and totally safe in terms of octain requirements,..... but good luck keeping a lower alive..

yeah, but how many of those motors run at a constant 80% throttle at cruise? Under a full load? You're looking at maybe a 2 or 3% duty cycle engine at WOT in thsoe applications. And as far as the lower units being the limiting factor, there's plenty of room in a Bravo lower for shifting hardware, the hp Bravo lowers can handle any thing a clamp on can put out. With the given rpm range and gear ratio, a sport master should be able to handle the Vrod.

[service860]

The 350 is using straight cut gears, which are the strongest. That tells me the gearcase is limited.

[RBT]

It is an opti, has the Verado 350sci gearcase.

[Mr. Demeanor]

Try hole-shoting and barking the prop on a Bravo with over 400hp and see just how long they last. How much more HP over 350 would it take to offset the drag of a larger lower unit and then it breaks because it isnt big enough. You reach a point of dimishing returns and my guess is we are pretty much there. This is probably why the quad 350SCI 38 Fountain has not lived up to its hype. Bigger lowers and extra weight killed it. It only 2mph faster at best than the same boat with trip 350SCI's.