Bill Bess Bill you can't compare a cobra motor to a boat motor. These people who have a ton on money and no common sense about anything. Running BBC motor at 6,500 rpm all day is no problem if built with the correct parts. If these people had any smarts they would be running diesel motors and turn 2,800-3,500 all day and saving fuel. 632 motors with 8 or 10-71 blowers on them if setup right will run a whole season without a failure. The right bearings, PEROILERS and good machinist will get you in the ball park. A/F meters on each bank of the motors will also tell any possible problem before it happens. A cobra wieght is about 2,800 lbs with fluids. A 38 Donza is 10-14,000 pounds and a ton of drag from the water. I know about the poker runs they have on Lake H. Some of the boats are in the 150 mph speeds. If you are going to go this fast, turbines are faster, lighter and in the long run cheaper. There are some engine builder that build endurance motors and give up 20 HP and not run on the ragged limits. These motor ran twice as long as "race motors" There are some FE motors being built that don't leak, make 600+ HP, are 500+ cubic inches and have a 7,000 rpm limit. You have to build a motor with what purpose it will be used for. FE have come along way in the last 7 years and the future is alot brighter with the new Cammer kits coming out. JMO Rick Lake Ps those boat parties are better than any Playboy party.
