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Dang it I hate when my dyslexia kicks in. Your right as to the sides but that I guess I can take some comfort in being right (I think) about the reasons for the names.
 

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lol I have brain fsrts too. I'm glad you posted the origins of the terms Michael. My dad told me that years ago but I had forgotten it till you posted it here :great:
 

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On newer marine engines there are certain items on the engines that are certified for marine use like alternators, starters, and air cleaners, and the engine block's have minor differences but unless you have a real sharp marine mechanic normally once it's installed he wont be able to tell the difference unless he looks at casting numbers.
I've bought a few boats with standard car engines in them where the seller has sworn he never did any work on the boat and that was the engine that came from the factory.
 

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Dang Nathan.....you started some great dialog with your thread. I like seeing all the opinions...great stuff!
 

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Well, just to get something straight here ...!!!!!

You should not run a car engine in a boat since there are some BUILT differences, a boat has no shifting tranny with 3-4-5 gears so the load on a boat and top RPM is way higher then on a car.... they have inconell ex valves and SS intake valves to take more heat ( wich a car engine does not have, the clearance on the built is looser then in a car since a boat runs for hours at 4000-5000 RPM and a ( stock ) car engine would not take that ! But again what do i know !?
 

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Your right it shouldnt be done, but unfortunately I think its done quite often because a car engine is cheaper to source than a marine engine and there are those that either dont know theres a difference or dont care. I'd be willing to bet it's the reason some boats suffer premature engine failure, the engine just cant handle the extended time at high RPM's.
 

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Here is something a little off the topic.....and it's Different and Very Interesting.....It is a Brand New Outboard from Seven-Marine......and what is Interesting about it.....is that it has a G.M. Supercharged Cadillac V-8 Engine and it will have...557 H.P....


.........Seven Marine Reveals 557-HP Outboard at Miami Boat Show.........


Our Outboard Expert describes a new outboard motor powered by A G.M. Supercharged Cadillac CTS V-8 Engine,
A wild new 557-horsepower outboard motor from Seven Marine revealed on Thursday at the Miami International Boat Show appears to set new benchmarks for outboard power, technology, and price. Are you ready for a $70,000 outboard motor?
The Seven Marine team mounts 557 motors on the Intrepid 370 Cuddy.

The 6.2-liter V8 outboard features an all-aluminum, supercharged powerhead sourced from GM Powertrain that is the SAME Engine Used in the Cadillac CTS-V Automoblie .It has closed cooling, a computer-controlled disc-clutch transmission with hydraulic shifting sourced from ZF Marine, and joystick control when paired with bow thrusters.
A pair of Seven Marine 557 motors were unveiled on the transom of an Intrepid 370 Cuddy, a boat that can be powered by triple 300-hp outboards. Other Intrepid models range up to 43 feet and can be rigged with four of the biggest outboards on the market. A pair of the Seven Marine 557 outboards could replace four 300- or 350-hp motors, offer about 300 less horsepower but also weigh 668 pounds less, and significantly reduce drag by placing only two gearcases in the water.
Seven Marine was founded about a year ago and is based in the Milwaukee suburb of Mequon, Wisconsin. Its principals include Rick Davis, who resigned in 2008 as executive vice president of advanced engineering at Mercury Marine. Davis is joined by his sons, Eric and Brian Davis, and manufacturing specialist Sandy Ballou.
Ready to roar: Twin 557's on the back of Intrepid's 370 Cuddy

In a video presented at the boat show, Rick Davis says that the concept for this new motor was hatched by Eric. According to media materials, Eric Davis holds 15 patents, the first of which was earned when he was 13 and on a “take your kid to work day” at Mercury. Eric Davis is also a champion powerboat racer, and the name of the company comes from his racing number.
The Seven 557 has a claimed dry weight of 1,000 pounds, compared to 667 pounds for a Mercury Verado 350 SCi. The top of the cowl is hinged and opens to reveal the V8 powerhead mounted horizontally, rather than in the usual vertical orientation. According to Rick Davis, the engine will remain in stock form as received from GM, with the exception of double-walled stainless steel exhaust and computer programming, and will run on 89 to 92 octane pump gas. I asked Eric Davis how the engine’s power made the 90-degree change in direction to mate to a drive shaft, and he just shrugged and smiled. “I’ll have to explain that to you later,” he said. Apparently the Seven team is not ready to reveal all of its secrets.
We do know that shifting is accomplished above the gearcase. The gearcase has a four-inch-diameter tube – a standard size – but has twin pinion gears to transfer power from the vertical drive shaft to the horizontal prop shaft, while keeping the size of the case small and hydrodynamic. An integral power steering system was developed with the input of Latham Marine, and the motor will be rigged with custom Hering propellers.
Rick Davis says the Seven 557 will have a three-year warranty, with 10 years of coverage against internal corrosion. How much will it cost? A cool $70,000 per motor, according to Eric Davis. You could buy the entire Cadillac for less.
Rick Davis told me that he and his team still have some testing and final calibration work to complete before we can actually take a boat powered by Seven 557 motors for a spin, and that work should be done this spring. In the mean time, I’m setting up a more-detailed tech briefing which I hope will answer some of the “how did they do that?” questions I’ve got about this exciting new motor. So stay tuned.
Charles Plueddeman



Link to....Seven-Marine's Web Site,
http://www.seven-marine.com/

 

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UNBELIEVABLE MIKE!! That's amazing for an outboard. Thanks for posting. When I look at that first pic it's easy to see why they are $70,000 a copy :)
 

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they are the same. my cousin had a friend that sold him a boat that had a 350 V8 in it he was pulling it with his 1990 1500 that also had a 350 in it as well. he spun the bearings in his truck and couldn't afford to fix the motor and turned out the boat actually needed new decking and hull repair on it too so we swapped out the 350 from the boat to his truck and didn't have to swap out anything. getting the 350 out of the boat however was a small miracle though the only thing we found different between the two were the mounts and the intake aside from that it was the exact same motor. truck ran pretty much the same as it had before didn't really notice any difference but to be fair about this his was not designated a "marine" motor it just had 350 firing order and standard 350 ribbed valve covers like the ones that came on his truck.
 

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Yes it will fit I bought an fj40 and the last owner had put in a 351w With 302 components lil complicated for me at the time but 3 years later I know everything about them lol c-4 tranny Holley 500 and 351w with a mild cam only issue I had so far is the wiring I’m still learning Toyota electrical going adapting to 351w Ford
 

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I've got a question that may be stupid but I was just wondering. I know a lot of people talk about swapping automotive v8's in boats but the car engines aren't made as strong and don't have enough power that a boat requires. So if a boat engine is made "better" than could you put a boat engine in a car?
I have installed three different Mercruiser 5.7 liter engines in cars, 1 was a Chevy 3500 panel van. I got a 5.7 liter Mercruiser that was tinned and changed out the water pump to a car water pump, the shaft is shorter on a car to accommodate the fan for the radiator... I used a block off plate for the fuel pump, and used a H.O. pump for the M.P.I. I installed. The injection was a kit I bought for a conversion from Carb to M.P.I,... The factory Mercruiser Cam is the same as a R.V. Cam, it gives you just a little bump so it sounds awesome in a car or truck.
 
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