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Intake ?

Old 08-11-2014, 12:30 PM
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Default Intake ?

Can you go from a rectangle port head to a Weiand blower oval port intake manifold? If you can what is the best intake gasket to use?

Last edited by Craney; 08-11-2014 at 03:18 PM.
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Old 08-11-2014, 01:04 PM
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I think its possible, ive heard of it done but have never done it myself.

I would think you need to use the oval port intake gasket.

But I could be wrong
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Old 08-11-2014, 02:14 PM
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Originally Posted by Craney
Can you go from a rectangle port head to a Weiand oval port intake manifold? If you can what is the best intake gasket to use?
Not sure what you're trying to gain, but why would you want to assemble using mis-matched parts? I've always used components that were designed to work together, then "gasket-matched" my aluminum intake manifolds, and aluminum exhaust as well. I've tried to work my cast iron heads to the gaskets as well, always looking to get the best "un-interrupted" flow through the breathing portion of the engine. I don't want to be a nay sayer, but I don't see how you're going to accomplish that with mis--matched parts...
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Old 08-11-2014, 02:26 PM
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Very hard to do because most oval port intakes will not cover the top of the rectangular port openings in the head. Can you say massive vacuum leak ?

However, the Dart Single Plane Oval Port intake usually has enough height to it's head mating surface to cover the rectangular port openings on head.

And yes, many have done this.

Last edited by SB; 08-11-2014 at 03:13 PM.
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Old 08-11-2014, 03:11 PM
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I would think you would want to use the square port gasket, provided there is enough surface to fully seal it as SB has mentioned.
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Old 08-11-2014, 03:15 PM
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I think one of the older Holley High Rise Dual Plane (oval port) Intakes would seal it too, but that was a long time ago, and i'm old, so that millimeter of a memory may be way wrong. Howevever, I have good memory on the Dart Single Plane Oval Port intake.
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Old 08-11-2014, 03:17 PM
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This is NOT my motor it's a friends motor. This is a Weiand blower intake.
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Old 08-11-2014, 05:11 PM
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See how things mate up and go for it.
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Old 08-11-2014, 05:39 PM
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Since you deflated my sails by not giving us correct info earlier.

I'll ask now: which Weiand Blower ? They made several different sizes.

Ah, forget it.

Just call Weiand. If they have no answer - they should - then do what was said above and take the intake and lay across a rect port intake gasket and see if it will seal.
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Old 08-11-2014, 05:52 PM
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I think it's 177 but I'm not sure this is not my motor.
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