Your talking about a 1.5 times increase in hp. We are talking about adding
15 hp to an engine that has 190 hp to begin with. Going from 190 to 205
will not increase the speed by 13~17 MPH. It may increase it by 2 mph if
your lucky.

--
Tony
my boats and cars at http://t.thomas.home.mchsi.com

-
"Paul" wrote in message
oups.com...
I will. I added 15 hp to one of my boats and more than doubled my
speed. 9.8 HP outboard = 7~8 mph I switched to a 25 HP = 20~25MPH
depending on load. 15HP increase = 13~17MPH speed increase. on an 16'6"
aluminum boat.

Paul

JamesgangNC wrote:
I didn't see anyone disputing that.

"Woodchuck" wrote in message
.. .
Tony, don't sound like anyone believes you with the 15hp = 1mph faster!
I
do!


"tony thomas" wrote in message
news:PiKpe.27752$x96.17450@attbi_s72...
Unless you are rebuilding the engine anyway, I would not waist my
money.
It takes a lot of hp to gain any real benefit on the water. Most
quote
15 hp to 1 mph. Spend your money on a 350 assuming your boat is 18'
or
bigger. A 17' will probably run sideways from the torque.

Biggest bang for the buck is usually found by going to a good
performance
SS prop. You can see 5 mph gain with the right prop over a cheap
aluminum one.

--
Tony
my boats and cars at http://t.thomas.home.mchsi.com

-
"Gorf" wrote in message
...
I have done some research and heard you can put higher compression
flat-top
pistons in the 4.3 and gain a few HP. Who makes these pistons? I have
done a
bunch of searches and come up empty handed.

A related question, I have also read that the 4.3 is a 350 minus two
cylinders and that the pistons and rods are the same. Is this true or
false?




--
John

WWW.Firewalk-NC.com

"Be the change you wish to see in others"

----Gandhi