350 engine spec

I've seen some reference to the "high performance" CC motors in the past, and I've seen one with 11.2 compression, which I understand was the 350-hp version.

Personally, a 11.2 350 would be fun, but really a problem for the manufacturer to warrant. That's too much compression to last anywhere as long as the 8.0:1 ratio on the dimunitive 327F with 210-hp. When it comes to that unruly group known as the "general publlic" it's tough to sell and warrant a product you KNOW they'll use. If you have 350 hp you'll be out there using it, ha. Fun? You bet. Long lasting, uhhh, maybe. Fast, most certainly.

The 11.2 = 57cc cylinder head
The 10.3 = 64cc cylinder head
The 9.9 = 69cc cylinder head
The 9.0 = 76cc cylinder head

I understand the 350-hp version was available from CC as the "High Performance" motor, and it was probably a low production product intended to allow the XK to remain competitive with the Donzi or other muscle-boats that were being sold at the time. Along with the higher compression heads, I'm sure a more aggressive cam was also offered. It's a testament to the ability of the hull to take that kind of power, and I suspect it did so with ease.

With your boat having 300-hp, it seems to be PLENTY fast, and not in the "insane" category. In any case I learn something every day, and when it comes to CC marine motors and the Commander family tree, so much the better. Listening to the motor in your video, I was reasonably sure it wasn't the 327F I'm acustomed to hearing, with 8.0:1 compression.

Very cool boat you have there.

Regards,

Paul