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Which Inlet Manufold ?

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Old Dec 31, 2006 | 12:35 AM
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Which Inlet Manufold ?

I have an 89 F150 with 5 Ltr EFI motor. Not truck's original motor. I had problems with the lower inlet manifold so went to buy a used one to replace it, only to find that the inlet ports from my upper manifold are rectangular and the ports on the manifolds I keep getting given are sort of oval shaped. My upper manifold won't fit the other manifolds anyway. Can anyone tell me what vehicle/motor has the rectangular ports. Friend seems to think motor is out of a Bronco but I just think it's a year/model issue.
Very confused.
 
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Old Dec 31, 2006 | 07:53 AM
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The intake manifolds are truck specific - it sounds like you are getting lower manifolds from cars. You should be able to use a lower manifold from any 85-96 truck with the 5.0. You do have the twin throttle body, right?
 
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Old Dec 31, 2006 | 11:07 PM
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Truck Inlet

Yeah, that may be what's happening. My 5 Ltr has the twin throttle bodies into the air intake plenum chamber.
 
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Old Jan 2, 2007 | 09:23 AM
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Both the pickup truck and vans use the same lower intakes.
 
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Old Jan 2, 2007 | 06:27 PM
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Yep, you need one from a 86-96 truck/van.
 
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