Scored a small block tonight from Facebook

George Jets said

Cool, Good info
So that 318 alum intake would match up to stock 318 heads (and the 302 heads) for good port flow. Just like the LD4B 318 alum 318 intakes.

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OK, sounds like the SP2P-318 Intake is built for mileage not performance like gliderrider06 says.
LD4B is a better choice if you can find them for the 318.

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Basically it's a pos, they'd still use that tech/theory if it was worth a **** .lol
I'd rather use a webber progressive 2 barrel and 1 1/2 inch primary headers with all kinds of vac advanc. Probably about the worst thing edelbrock designed. Imho
Let's just say this... when you go to swap meets and see the guy with the big blue tarp littered with intake manifolds for sale....mostly... those are all the banished pieces of **** nobody wants..and you can count on seeing the sp2p intakes...should have called it "the asphyxiator"