"Wayne.B" wrote in message
...
On Mon, 05 Nov 2007 09:26:15 -0800, Capt John
wrote:

About five years ago I had a shop I've been dealing with for years
build me 300 hp 350's, completely remachined, new sheet metal, pistons
rings cams, bearings timing gears and chain, oil pumps, ect.

I'm sure there are people who can get that kind of power but it can't
be easy or durability/operability is compromised in some way. If it
was easy Mercruiser would be doing it and they're not.
One of the challenges is maintaining low end torque while you hop up
the high end. Another issue is what happens to durability if you have
to run at 5000 RPM to get the 300 hp.

I have a 6.2L MPI (about 373 cid) that Mercruiser rates at 320 hp, so
300 hp out of a carburated 350 is a bit of a stretch.

Not really. My 350 MPI engine is rated 330 hp.
http://www.michiganmotorz.com/Marine...07+replacement)
315 hp. But they are Vortec base engines.