PCM SAYS NO TO AFTER MARKET INTAKE MANIF

You can buy aftermarket intakes with or without rear water passages. Don't quote me on this but I believe the Performer does NOT have passages, the Summit does. So just do some homework and buy what fits your need.

I've run both with and without rear water passages and have never noticed a difference. You could also just block the passage with the intake gasket.

If I was not doing my home work I would not run in to these conflecting issues. Not one person said not to use a intake manifold with open rear water passeges , nor did they say block them off. I am the novice asking the questions , expecting answers from experts. Just like the marine Holley , or marine Edlebrock carb with a pcv port at its base neither company makes one. All I wanted to do was get on the water and not have the boat stall or blow up, so I ask a simple question what is the best way to do this. I end up with being told to ,put in a new mallory dist., put a 8 degree wedge, put a new edle or weiland, or summit intake manifold, use a edlebrock marin carb, oh no! only a Holley marine carb will work properly. Edle are cheap use orginal stuff. If somebody out there knows exactly how to make a 1985 SN 2001 Purr like a kitten at idle and run like it should smooth and fast, tell me. I know how to build car engines , I just do not want to take a chance with my family lifes at stake in a boat. Why am I so paranoid, my buddy in florida about 30 years ago had his family on the dock while he went to start his boat , his jaw fell at his wifes feet after it blew up.

I am just venting, I am going to clean up the original intake, put a new holley on it, new Mallory dist ,new resistor, new coil, wires and plugs ,check all fuel lines and filters change oil, time it and see what happens. Thanks for your understanding.

There are a lot of us here that need to remove all our aftermarket parts .They will not work as well as the stock setup.
I have a 331 stroker , will anyone swap me even for a "STOCK" 302.Stroker has low hours,250 at least.
It was the fastest boat at "River Run" this year, even beating out the "Orange Crush"
Best to get rid of it now before I have problems, may concider a 6 banger...................boat dr

Thanks for all the help I will let you know how it works.