The beautiful thing about the huffer is that it relaxes the cylinder head/cam portion of the game. Just a wee bit.

The bottom end still needs to be built like a brick crapper though.


Good luck in the project. Looking forward to it.

GT

I agree, a bonneville is not the best choice for a go fast boat.... Unless it's a TR.


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75 HP out of 35 cubes? Interesting.

The word that shut it down for me was "Inexpensive".

I can tell you this, 700 HP would be tuned to the gnats ass and on the ragged edge. You could not cheat on one single part. A 496 would have to turn near 5,800 RPM+ to make those numbers. Not sure reliability would be there. This does not sound like a quarter miler, but more of a river racer.

GT

What hull?


Over 100 in what hull?

GT

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Wow, well 700hp is getting pretty serious in a boat, but on pump gas that may be streching it a bit. Why so much?, Do you want this naturally or are you going blown? HP above a certain level doesn't come cheap or easy, you have to really work for it. Although those numbers can be achieved always remember reliability is going to suffer. There is always a sacrafice when you build an engine to produce impressive power. What it's going to come down to is how much power can you afford to build. From this originating thread you were looking to get your hands on a long block assembley for roughly $2,000, that most likely would of been worthless to produce numbers like that. To be quite honest your looking at a cost of $8,500-9,500 for a quality engine that is assembled from scratch by someone that knows what they are doing, then dyno tune it, that's the ONLY way to find out what the engine needs as far as timing, air/fuel ratio ect...Just my two cents worth from the years that I have been doing this, but I don't know what your budget is, that dictates alot.

joshes Rogers is a nice piece 👍


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I have never had an electric pump fail pulling from the top.

Just remember to pull the anti-siphon valves and install ball valves instead. Also, the oil pressure switch is an absolute must.

Put a screen filter in front of the pump and push through a water separator.

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You're correct with a GEN V engine you will have to use an electric pump, The Holley blue pump is a good pump and will feed an engine up to about 600 hp, and yes it should be gravity fed to make life easier on it. When I built my boat I did elect to go with a Holley mechanical marine 130 gph pump, but I have a 1978 Mark IV ,I like simplicity and I am more of a fan of mechanical items when I can get away with it, just to make it more fool proof. I have had some issues with electric pumps in the past, a mechanical pump can last for twenty years...

That boy's bumped his head if he thinks a bare hull is going to get him 2g's.