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  #11  
Old 04-03-2014, 07:45 PM
Cloaked Cloaked is offline
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Originally Posted by Jc5229 View Post
And after spending 6 hours in the scrapyard today I managed to walk out with these gt-40p heads. Now on these holes need to be stepped out to 1/2 inch and the plugs need to be changed to brass any special setup for the springs or valves compared to stock to make it ready for the 351?
Stoke for stock, that's all you need, aside from a gasket kit...

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..Some of you give a whole new meaning to the phrase "another @sshole with a Mastercraft."

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  #12  
Old 04-03-2014, 08:02 PM
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Awesome and I'm already staring at that in my living room felpro 351 marine gasket set
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  #13  
Old 04-03-2014, 10:15 PM
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j.mccreight@hotmail.com j.mccreight@hotmail.com is offline
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Awesome and I'm already staring at that in my living room felpro 351 marine gasket set
You are at the limit on the stock valve springs. You probably won't have coil bind or float valves at 4600-4800 rpm's but if you decide to replace the camshaft the springs will need to be changed.
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  #14  
Old 04-04-2014, 01:53 AM
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I was looking at doing all of the above when I had my TriStar. Actually had the GT40P heads and the Edelbrock manifold. Then I sold the boat. Such is life.

If you are going to be into your engine anyway, the next thing to look at is the cam. The go-to people are Cam Research. They specialize in Ford cams and have experience in grinds for marine engines.

http://www.camresearchcorp.com/
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  #15  
Old 04-04-2014, 10:30 AM
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There are some good threads here (use search function) on the GT40 heads:

http://www.correctcraftfan.com/forum/default.asp
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  #16  
Old 04-04-2014, 06:51 PM
Cloaked Cloaked is offline
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Originally Posted by Jc5229 View Post
Awesome and I'm already staring at that in my living room felpro 351 marine gasket set
.....
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Quote:
Originally Posted by Thrall View Post
..Some of you give a whole new meaning to the phrase "another @sshole with a Mastercraft."

RE: Thrall, Welcome to the club....
NEW SKINS in TN... Leading Edge Marine Interior

feedback on a TN company: http://www.mastercraft.com/teamtalk/...ad.php?t=58767

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Last edited by Cloaked; 04-05-2014 at 05:40 PM.
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  #17  
Old 04-04-2014, 07:15 PM
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Originally Posted by Jc5229 View Post
Awesome and I'm already staring at that in my living room felpro 351 marine gasket set
Stare at it long enough and bam! . . . it will just assemble itself before your eyes. LOL
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  #18  
Old 04-05-2014, 01:32 AM
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Yea I don't see me doing anything with the cam just yet I'm over budget with the wife as it is but hey it had to look good and run good. I'd already have this all done but I'm waiting on the boat to get back from the fiberglass place and waiting on the heads to get finished up then it's game time.
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  #19  
Old 04-07-2014, 01:42 AM
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I read on another thread today about clear coating valve covers and intake manifold to help with corrosion on the aluminum. Has anybody ever done this if so did you worry about over spray or did you tape everything off and also what kind of clear coat did you use?
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  #20  
Old 04-07-2014, 01:46 AM
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wheelerd wheelerd is offline
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I've had several auto engines with aluminum intakes and never had them corrode, even after 25 years. Not sure if marine engines would be any different.
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