Boats For Sale:
351W Intake needed |
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79skinautique 
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Joined: December-02-2005 Location: Gainesville, GA Status: Offline Points: 48 |
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 Topic: 351W Intake neededPosted: March-03-2006 at 6:08am |
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I am in need of a new intake for my 79 351. I think I would have clearance issues with ski dims high performance. Does anyone know if this intake is the same aa a car or truck from 1979? Does anyone have an original one from there boat to sell?
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Aaron
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AWhite70
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Joined: March-05-2004 Location: United States Status: Offline Points: 242 |
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Posted: March-03-2006 at 6:19am |
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I have the Edelbrock Performer intake on my '79. It's the same one that SkiDIM sells but you can buy it at Summitt Racing for quite a bit less.
It is taller than the stock manifold. My original flame arrestor was over 3" tall and I couldn't get the motor cover to close. I had to switch to an arrestor that's 1.5-2" Tall. I still have the original manifold but I'm going to hang on to it for awhile. |
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79nautique
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Joined: January-27-2004 Location: United States Status: Offline Points: 7872 |
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Posted: March-03-2006 at 7:23am |
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If you get the air-gap then you'll have some issues but I didn't have a problem using it with teh arrest skidim sells, pretty sure it's not 3" tall but a 2" seems right. They also have some knock-off edlbrock mainfolds on e-bay that are polished at a good price and they have an extra cross over for the water passage.
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David F
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Joined: June-11-2004 Location: United States Status: Offline Points: 1770 |
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Posted: March-03-2006 at 7:46am |
I am pretty sure the answer is yes. However, if it was me, I would switch to the lighter weight higher performance aluminum manifolds. Especially if you have to change it out anyway. If you want to go back cast iron, I would think that the manifolds are readily available at salvage yards for $30 or less. |
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GottaSki
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Joined: April-21-2005 Location: NE CT Status: Offline Points: 3327 |
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Posted: March-03-2006 at 8:15am |
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Most truck manifolds would have an egr port you need to block off.
I agree, and Weiland Stealth appears not quite as high as the Performer. Also modern marine carbs have the PVC port right on the carb so you can omit the carb spacer with the Performer. Don't run PVC to an intake runner because it will make 1-2 cyllinders go lean, making idle adjustments a compromise at best, and can make these cyllinders run too hot. |
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"There is nothing, absolutely nothing, half so much worthwhile as messing around with boats...simply messing."
River Rat to Mole |
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trikeaholic
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Joined: August-10-2005 Location: United States Status: Offline Points: 163 |
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Posted: March-03-2006 at 5:11pm |
Do you mean PCV? PVC is a plastic (poly vynil chloride or something) and PCV is something like pressure crank case valve? right? |
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NECC
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Joined: February-12-2006 Location: NH Status: Offline Points: 29 |
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Posted: March-04-2006 at 3:38pm |
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Be careful of the aftermarket aluminum intakes as most if not all are not designed for Raw water cooling marine applications. Most are designed for closed cooling car type applications and carode quickly over time in the cooling passages. In addition dissimilar metals from aluminum intake and Cast iron heads tend to have gasket problems in marine applications.
Also some of the intakes are designed for high end power and when in a marine application your low end power is what you really want. |
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79skinautique
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Joined: December-02-2005 Location: Gainesville, GA Status: Offline Points: 48 |
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Posted: March-04-2006 at 6:53pm |
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I was able to find an original intake that is in great condition from a member of this site. Thanks for the help.
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Aaron
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abolton
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Joined: September-07-2005 Location: United States Status: Offline Points: 81 |
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Posted: May-31-2006 at 9:15am |
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I just put on a performer intake on my 78SN 351W. The flange gasket to the thermostat housing leaked at start up. I replaced it with RTV the tol. is real close at the 7:00 o-clock position. Anybody else notice this? Any of you guys running the Edlbrock Performer intake? How do you like it????
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ABE
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79skinautique wrote: