351W Manifold Question
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Elder User
Joined: Oct 2007
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From: Highland Village, TX
351W Manifold Question
Can you tell me what the hole next to the 2 center manifold bolts go? Its the hole on the drivers side of the carb up against the edge of the manifold.
Should I and how do I plug it?
Should I and how do I plug it?
I'll have the Roast Duck
Joined: Jul 2002
Posts: 9,622
Likes: 109
From: Northshore, MN
2 hard vacuum lines come from it. one goes to the back of the carb, the other goes into the choke control on the side of the carb.
I should mention that I'm not totally sure, as my 351W from 1976 has the hole on the P side, and that's where they go on the 2bbl.
I should mention that I'm not totally sure, as my 351W from 1976 has the hole on the P side, and that's where they go on the 2bbl.
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Elder User
Joined: Oct 2007
Posts: 790
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From: Highland Village, TX
Seriously though anyone know where I can find something to block it off with?
I'll have the Roast Duck
Joined: Jul 2002
Posts: 9,622
Likes: 109
From: Northshore, MN
https://www.ford-trucks.com/user_gal...190200&width=2 it's not a good pic, but by the door ****, you'll see the two vac lines on my intake that go up to the choke and rear of carb. Just gasket seal a piece of flatstock? FWIW, the EGR screws into the back.
Mountain Pass
Joined: Aug 2006
Posts: 216
Likes: 18
From: Central NC
FWIW.....
the choke stove is on the passenger side in your image.... the image of the 4v manifold shows the large hole on the driver's side... the choke stove does not need exhaust flow of an open port... only a heat source... early exhaust mainifolds are an example, a tube from the manifold to the choke... with either a small vacuum bleed or a port in the carb throat above the venturi to create the heated air flow.
yes, the egr on the 2v is at the rear of the carb.... but i think in a different place on the 4v manifold... i suspect this manifold came from a late 80's truck with the 351 (ho) engine (before fuel injection)
for a blockoff... find some stainless flat stock and whittle away...
the choke stove is on the passenger side in your image.... the image of the 4v manifold shows the large hole on the driver's side... the choke stove does not need exhaust flow of an open port... only a heat source... early exhaust mainifolds are an example, a tube from the manifold to the choke... with either a small vacuum bleed or a port in the carb throat above the venturi to create the heated air flow.
yes, the egr on the 2v is at the rear of the carb.... but i think in a different place on the 4v manifold... i suspect this manifold came from a late 80's truck with the 351 (ho) engine (before fuel injection)
for a blockoff... find some stainless flat stock and whittle away...
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Elder User
Joined: Oct 2007
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From: Highland Village, TX
Thanks guys, ghall actually nailed it. Did some number checking last nite and it is a 86 Truck 351 HO manifold. The hole is for exhaust heat for the choke and what I am looking for is a Choke Block Plate which Edelbrock sells. I bought one from Summit for $13.95 so I'm good to go.
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I'll have the Roast Duck
Joined: Jul 2002
Posts: 9,622
Likes: 109
From: Northshore, MN
Good deal, I have an E4TE 4bbl manifold for a 351W, also. But it was in the storage shed, and the wolves were out last night, lol. Anyway, the EGR hole is located just below where it says E4TE.....pointing out the back. Sounds like you got it. The hole is in the same location as yours as well.