Edelbrock LD4B

IfItsGotWheels said

As I understand the LD4B manifold was designed for use on the 273 back in the 60's. Port sizes on the 273 heads are smaller than your 318. Just like everything else, manifold technology has advanced in the last 40 yrs. IMHO you'd be stepping backwards switching manifolds.

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The D4b was the 273 intake manifold.

The performer 318/360 is a total pile of crap compared to a LD4b on a performance oriented build.

An LD4b is the 273/318 intake counterpart to an LD340 for the 340/360 port size. A 40 year old LD340 is just about as good as ANY dual plane intake for a street car even today, even the Performer RPM and Air Gaps. Ask any of the engine builders, Barton and two others have stated, if you have a LD340, getting an RPM or Air gap isn't worth the coin.

J, keep your feelers out. LD4b's pop up every once in a while. I'd have to look if I have one, last one I got cost almost $150.

I still have that shroud if you want it.