fastestbowtie

CPPerformance, if I went with the stainless marine exhaust, would it be advisable for me to go with the HP riser to avoid reversion with my motor specs, or would that make it too hard to use the existing under swim platform outlets.

fastestbowtie

Brian, I will absolutely NOT be spending 3K on a set of headers. The absolute most I will spend might be 2K and even that seems ridiculous to me, but it seems there are few options for less. If the Lightning headers will work with my application, and no one has had any overwhelmingly bad experience with them, it seems they may be the best bang for the buck. To be completely honest, I fail to see where the Stainless Marine's would perform any better than the Revolution Marine's exhaust. I do like that they use a stainless tubes instead of cast aluminum for the exhaust, but then several other manufacturers use aluminum as well and for 1/2 the price of the Stainless Marines, it's hard to justify the extra expense when you know it will most likely run the same.

CPPerformance

What is the duration of your cam @.050? You normally won't see a reversion problem with anythng that is less than [email protected]

If you have below swim platform exhaust outlets then the long HP riser won't line up for you. You would have to have a custom pipe built to fit properly. Stainless Marine can build it, just cost a few more bucks.

teaguecustommarine

For about $1800 you could get into a set of IMCO PF2000 exhuast.
we have sold and instaled a good number of these and have had
nothing but great results.

fastestbowtie

I was just reiterating what he had said about not seeing himself spending 3K on a set of CMI, so he settled for the Stainless Marine's and I was saying there was NO way I would spend 3K either (allthough, the CMI's I saw for a small block were over 5K). I have seen the Stainless Marines for $1600.00, but was wondering how much better they are than the Revolution Marines, or possibly even some of the other less expensive cast individual runner type manifolds.

fastestbowtie

The cam currently in the boat is 222/230 deg at .050 with a 1.5 ratio, will most likely gain a couple of degrees when i switch to a set of 1.6 rockers. However, if I end up building a 383 in the future, I would consider upgrading the camshaft to try and keep my peak HP in the same range. Unfortunately, the next size cam in this Crane series jumps all the way to 234/242 deg at .050 which is a little larger than I would want so I may just stick with what I have and get some port work done. Of course these are long term forward looking possibilities, but if I spend 2K on a set of exhaust, I would like to feel comfortable knowing their is room to grow with them.

CPPerformance

The 234/242 @ .050 cam will likely require that you go to a dry style exhaust system. That's fine if noise regulations are not a problem in your area, but if they are you may not be able to comply or you may end up spending quite a lot on silencers.

I would recommend you take a look at this article on the Keith Eickert web site regarding Water Reversion for more information.