I have this intake manifold, but i can't find anything on it. Anyone ever run one or know it's rpm range? Anything at all will be helpful.

its one of their older, not so efficient designs...do yourself a favor and ditch it for a performer or rpm air-gap manifold.

Agreed. I got one on a car I bought, and it's pretty much garbage by today's standards. It was good new technology in the early 1970's.

It's a low rpm single plane intake. It's got long small runners that wheeze out badly above 4500 rpm. It gets decent power between 2500-4000 but that's about it. Not good for mileage either. Basically you get the worst of both worlds, poor throttle response & mileage of a single plane, but you won't get good power out of it either.

I'll be getting a Performer to replace it as soon as I can afford it.

Looks like it's time to search for another intake. Thanks guys i really appreciate it.