The boat is located in Lakewood CA. I don't own the boat. I just posted it for a customer of mine. You can call him at 562-256-4403 for more details.

My friend said to reduce price to $3000.00. Really needs to move the boat.

Asking $3800.00 guess I should have mentioned that.

the boat is a 1970 Hawaiian Cobra with a 468ci chevy big block with about 10-12 hours on it, Berkley 12jc pump unknown hours, new battery, alternator, starter, fuel pump, $450.00 worth of new A/N fule line and fittings, 5year old interior, trailer is single axle with new tires, tongue jack, lights. boat comes with life jackets oar two person innertube never used. both are currently registered and i have pink slips on both. 562-256-4403 jeremy.

I have no intention of racing it just would like to make it more usable until time and money allow me to get a bigger boat. I wasn't planning to spend the money I already have on it. It was purchased back in 06 for 6000.00 as a turn key beginner boat. For the first couple of years it was then the problems started showing up. Carburator, then ignition then pump and now the engine. Was going to just sell it with a blown motor but with this economy I wasn't going to get much or anything for it. Like all my old cars, I am kind of at the point of no return. I still don't see how a couple of plates would cost more than a diverter kit, but so far the experts are saying they are.

Why?

Well I haven't got a lot of input yet on the hull. Learned a few things like at least what model boat it is. I would like to learn more about the hull, what the differance adv/disadv between the Cyclone and Super Cyclone. From pics I have seen here the hulls look different but which is better and for what. I just don't want to get to carried away. Eventually I am going to need and want a bigger boat, but when I think how much fun I have had with a tired motor, what can this boat really do? One thing it will never be good at is dealing with rough water. Just this side of useless.

Curious what CR you have in it now....

You're looking to pick up over 250 HP by doing a rebuild and a cam change? Hate to say it, but very tall order..Maybe. 

The reason I threw 5,200 RPM at you is because that seems to be the sweet spot for most big block powered jets sporting a Berkeley.

I have seen guys thinking they want to see 6000+ RPM and watched boats running 5K walk right passed them. It's all in  the set up and matching of parts..

Most important, forged pistons and crank with a good set of rods. A two bolt block is adequate, but I would recommend studding the mains and balancing it to within 1-1.5 mils...Studding the mains will require a line hone.

The cam is really part of a bigger picture....carburetor, intake, exhaust and valve size all need to be working in perfect harmony...

If you get the HP to where you think it will be, you may find yourself putting an "A" impeller back in it...


Off to work.   

GT

If I am understanding you right you are saying that a 454 Rectangular port HI Perf Block only has 250 HP. I was just basing my estimate on tech articles, Horsepower TV etc. 500HP shouldn't take much with a 454 rectangular port. Is there something I am missing here?

Don't need to turn more than about 52-5500 RPM unless you are planning on spending a whole bunch of money on building a pump and have a stupid light hull....

GT

Well as I mentioned before its a Rogers Super Cyclone. Is that considered a light hull or for that matter a good hull?

That was one of the cams I was looking at. Is 5200 all you can get out of a jet? I was hoping with a fresh motor and some modifications I could get 6000+ easy out of a 454 but then my knowledge of what can be done with a jet is pretty limited.

I am rebuilding the 454 for my Rogers Super Cyclone. The motor was origional and never apart before. Its a rectangular port 454 high performance casting block and heads. I don't want to go crazy on this one as I have a tendency too on motors and I don't want to be tuning and adjusting all the time out in the water. I have done some mild porting to the heads which are open chamber type. I am running headers, a Team G manifold, 850 Holler DP, and a recurved HEI. The jet is a Berkley that was rebuilt by Harmon Marine a couple of years ago with a B impellar. What would be a good camshaft for this combination? I am going to shoot for around 10.1 compression. When I first got the boat it had a cast iron two plane manifold and transom type exhaust. Motor was pretty tired as was the jet I later found out, but still mustered 62 mph on the river with GPS at 4200rpm. After adding headers, Team G manifold with 1 inch spacer and rebuilding the jet it got up to 4500 rpm. Never GPS checked it but I would guess that is a little better than 65. Don't know what these boats did fresh out of the factory but thought I would make some minor changes for improvements without going to crazy on $$$$ and reliability.

Thanks

It's a Super Cyclone, I've never seen a Cyclone built after around 72. There may be a few out there, but after the Super Cyclone came out not many Cyclone's were built.
18' Super Cyclone and 18'Bonneville share the same bottom.

Thanks. So is the only differance between a Bonneville and Super Cyclone the bubble top then? What is the differance in the hulls. Is one better or should I say better at one thing than another?

Not me in the photos LOL