Thread: Thoughts about AED carb?

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Originally Posted by DennyW

Pretty much what was said. How ever, you can try a 1" spacer with the 4 holes (closed), not open. This will speed up the velocity for take off.

This the manifold you have ?

I was reading my Holley handbook and in chapter 8 it was talking about adapters. They claim that a 3310 rated at 780 cfm drops to 640 cfm when an adapter is used.
I've got the 650 dp mounted on the 289 in the Mustang with a 1in spacer. By their calculations that must drop the cfm to somewhere around 525. Does that make sense?

That does make sense. I was under the impression that carb cfm was set in stone. BTW, the manifold is a stock Ford unit I picked up at the local swap meet for $80 a few years ago. I'll have to find the numbers on it to see exactly what it was originally for.