Edelbrock LD4B - what's the operating range?

I’d call that an idle to 6,000 intake. But of course, like said above, a larger camshaft and ported head and etc….. you get the idea…
I really don’t see a problem to 6500.

I do wonder what the old catalogs listed it as. Hummmm
I had one on a 318, small cam, 216@050. I’d run it to 5500. That’s all that the llittle cam really had in it inside the 318. Peppy lil’bastard it was, for what it was.