318 rebuild/upgrade

Hum, I know that asking Edelbrock at this point, I'll probably ethier get a kid saying, "Whaaat intake is that called again, hold on, I'll need my boss for this." and or how many liters is that again? >jk<
Seriously. I don't think I'll get an answer for that question. I'd bet because the Performer was made after the engine was discountinued.
I would certainly see the performer as a better intake. Just a IMO thing.
The intake does indeed fit and would work on the engine in everyway except that , hum,, 1 or 2 year 5/16 attaching hardware with a different angle bolt engine.
I forget.

Pop quiz, who knows?

The Performer has .95 X 1.95 ports. How does this match up to the shared smaller port heads of the 318/273?
I went outside to measure up my '79, 318 heads and found 15/16 X 2-1/32. How this translates into decmials? I don't remember how to do it.
(Besides I worked ast night and I'm a lil'tired right now)
I also have in hand a LD4B and measured the ports to be 1-1/16 X 2.

Other Edelbrock site intake window measurements just for the here and now ref. for those interested.

Regular Performer......97 X 1.95
RPM Airgap, ............98 X 2.16
TorkerII,...............1.00 X 2.17
RPM (regular) .......1.01 X 2.17
Magnum RPM.........1.08 X 2.10