Engine swap

Your exhaust manifold won't work. Good luck finding cleveland 4V port marine manifolds.

Plus the rotation is wrong.

The probability they are really boss heads is questionable.

Not something to undertake if you are not mechanically and have to hire this out.

For a fraction of the cost, you could change intake and carb to 4BBL and probably get the biggest improvement for your money. ...but 220HP in a Tique is certainly not underpowered. What are you trying to accomplish? It might be that a new prop would be the best money you could spend on improving performance.

Thanks for the info guys. I now have the "boss" 302 in my garage suspended on an engine dolly. It turns out it's NOT a true boss motor. However it does look to have some HI PO heads...not sure if they are Clevland or aftermarket??? I have been told that it also has a "mean" cam in it. I'm tempted to push forward and attempt to swap the stock 302 for the "HI PO 302" but this may be an uphill battle. I've learned that the initial obstacle is that my exhaust manifolds won't mount up to the "Hi Po 302" The bolt pattern is differnt. (Gotta Ski, you were right) This issue alone could be a show stoper. The stock 302 actually makes good power as is...I was just thinking about really "hot rodding" it up! I may look into a prop, some head work, a cam, hi flow intake, 4 BBl carb, etc...

Anybody out there able to list a few suggested engine mods???

Thanks!

Jim

A "mean cam" may have too much overlap for a wet exhaust.

I'm with Jameski all the way...put a high performance intake on...4 bb carb...acme 540 3 blade...maybe flow the heads....and you rollin.@ 250 hrs on the 302...keep it!

Thanks nuttyskier2002. I knew i had to watch how aggressive of a cam i got with wet exhaust, and now i do. Im looking for that low end torque and something that will sound good as i idle around. cause lets face it vintage CC's are just hotrods that pull skiers well.

I've got to go with '79 on this one in regards to the 4V-without-the-cam upgrade, and especially with this engine, unless your 302-2V has a firing order of 18456273. Here's what the firing order has to do with it. This is the typical 351 firing order which was used on almost all but the very earliest 302 4Vs, which meant it shared the same came and 351 heads. If you have a firing order of 18736245 then you have a lower profile cam than the 351 model and the 4V isn't gonna help that much. If you have the 351 firing and if by chance the 351 heads as well, (look under the valve cover for "351") then the 4V may do you a lot of good. Depends on what you have.

As for the cam, an economical one is from Clevite marine cams, and check this site/page which someone recently posted the specs on: http://engineparts.com/motorhead/techstuff/2003marine/Camshafts_Lifters_TimingComponents.pdf

Cam part number 229-1834 has been used several times by myself and Jim-in-Houston, and performs very well on the bottom and top. Something neat to be realized about upgraded cams in marine engines (from my experience) is that you basically have an inherent stall speed converter as a result of the unavoidable prop slip allowing the engine to rev immediately. I initially worried about loosing low end power but found that the bottom end-out of the hole power increased somewhat significantly, however this cam spec listed above isn't all that dramatic, but somewhat comparable or slightly better than a factory 5.0 HO Mustang auto cam, which we all know is no slouch. We've also got an older Crane cam engine (who's no longer providing Rev Rot cams I was told) which is a significant step upward with a split pattern and 494-512" +/- lift, and it has gobs of low end power as well. A good combination of parts on a 302 in a 16' CC, will accelerate like nobody's business.