Anyone know of any vintage boat/engine sites where parts maybe sold?

I'm told 2 YHs have less cfms than a 4Brl.  I would think they would be equal to or greater than 2 brl. 

As far as heat goes, does your manifold have the exhaust port or furnace?  One that I saw one on ebay did have it which surprised me as I don't know why they would put one on a manifold designed for marine use.  The downdraft manifold on my 312 has one that I would like to block it off as I don't like the look of burned paint and I'm told that it is not needed on a boat.  Do most people block them off on their cars?

Try the Interceptor section at marineengines.com.

Yes mine has the exhaust x-over and I was wondering if you could plug it also. I'm new to y blocks and haven't seen to many people running marine parts on street cars.

Yes you could block it off or used the restricted gasket for trucks (i think). Also the side draft carbs are the same Carter 1 Barrel that is used on the Corvair Syder (Turbo Charged). and the Blue Flame Corvette six.

They shouldn't be too hard to tune using a Uni-Sync.

BOB

did they make a 2barrel marine carb that was set up like the normal one. like could you take one and bolt it on a normal 2v intake and run with it. just thinking cuz if they have baffels and stuff in the fuel bowls that would be awesome to keep fuel from sloshing around when im driving on rough mountain roads.

I explored the marine manifold years ago trying to find a cheap way to use Ford EECIV EFI multiport injection on a yblock. I bought the whole marine enchilada from John Mummert, who had one hanging on his wall, including the little coolant bypasses with the tiny thermostats in them. Trying to fit injector bungs into 8 uniform places on the manifold was futile. The air flow in the manifold itself seemed very clunky and the carbs are small. The crossover part of the intake is narrow and would really restrict any serious flow. I think starting with some log intakes would be a better place to start and fab some runners and a common plenum with a throttle body. The marine manifolds were made for cruising quietly around on the lake not for any power applications. Now I have the thing hanging on my wall.



Mark Hebard

57 Black Tbird 312/auto

Mark would you want to sell the valley pan and coolant bypasses? I'm goin for looks over performance so the power issue don't bother me.

I don't remember having the valley pan now that I think about it. The coolant by-passes, carbs and linkage are buried somewhere in the my garage catacombs. I look around but not sure where they are and if I see that I actually still have them I will let you know.



Mark

57 Black Tbird 312/auto

Those set ups look pretty cool, I've had a couple and sold them,  kinda neat on a roadster.  I think the Carter YH is like 190 cfm but if you look at how the are mounted back to back I don't think this could be a very efficient flowing manifold, good for low profile though.

   God Bless.   Tim                           http://yblockguy.com/

350ci Y-Block FED "Elwood", 301ci Y-Block Unibody LSR "Jake", 312ci Y-Block '58 F-100, 338ci Y-Block powered Model A Tudor

tim@yblockguy.com  Visalia, California    Just west of the Sequoias

I think I have a marine valley pan, I will look tonight and make sure it is usable.