I called summit, they didn't stock anything called vortec...

Vortec is a word GM used to describe a swirling of the intake gasses in the
cylinder and combustion chamber - what specifically are you talking about?

"Dave" wrote in message
. com...
If I recall correctly, the '97 was pre-vortec (at least the marine
engines).
If so, you definitely want vortec for hole shot.
Dave

"bomar" wrote in message
...
Buy, borrow, or steal the book "Small Block Chevy Marine Performance" by
the
GOD of GM marine engines Dennis Moore.
Read it cover to cover and it will answer all your questions.
Amazon, eBay, or www.mooreperformance.org
Dennis has forgotten more than anyone else will ever know about GM based
marine engines.

"no one" wrote in message
...
I'm wondering what are good price/performance modifications for this
motor
(1997, in an inboard ski boat). Specifically, what modifications that
would
commonly find on street of off road vehicles, such as heads, cam, MPFI
kit,
intake manifold, supercharger, etc, would not work or not work well on
a
marine engine application? Obviously exhaust is one of them.

Secondly, how will the existing fuel system cope with additional
horsepower,
or is an aftermarket open loop MPFI system one of the required
modifications?

The boat has enough low end for my purposes, so I'd like to bump the
power
range to 2000-6000rpm and get another 5-10MPH (70-100 hp?) out of the
boat.
(Let's assume it is or will be prop'ed appropriately)

My background is in street and off-road, so any marine application
advice
is
appreciated.

Thanks in advance.