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Discussion Starter · #1 ·
HI, I purchased edelbrock heads and I have an alumnium intake manifold, the manifold water ports are one in the front and one in the middle, the new heads have one in the front and one in the back they don't match up, what do I do buy a new manifold to match the heads? see pictures,does anyone know what type of manifold I have ? from what I can tell it is a pre 1969 with the oil filler in the front.
 

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All Small Block Chevy heads have symmetrical water ports, that way they can be used on either side of the engine. No small block intake manifolds have a rear water crossover, the rear water port is always blocked by the manifold, this is normal unless a racing manifold is used to modify the cooling system.

You are fine, bolt it up.

That center port on the manifold is not a water port, it is the exhaust heat crossover port from the factory head. The Edelbrock heads don't have this port, it is not neccesary with aluminum heads. Again no big deal, bolt it up, you are fine. :)
 

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Discussion Starter · #4 ·
what about the open port in the back of the head it will be blocked off?
the manifold does't have an opening on it. will my manifold work on those heads thanksfor the info never saw this situation the old heads match the old manifold that is what makes me wonder.
 

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Discussion Starter · #5 ·
what about the back open port in the back side of the head it will be blocked off ?
the manifold does't have an opening on it. will my manifold work on those heads thanksfor the info never saw this situation the old heads match the old manifold that is what makes me wonder.
 

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watchdude1 said:
what about the back open port in the back side of the head it will be blocked off ?
the manifold does't have an opening on it. will my manifold work on those heads thanksfor the info never saw this situation the old heads match the old manifold that is what makes me wonder.
If you are talking about the rear water port on the head at the manifold mounting face, the manifold blocks this off. ALL small block chevy's are this way unless the manifold is specially modified or is a race manifold.
It was blocked by the manifold on your old heads too. This is normal
 
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