Edelbrock heads vs Indy

I was told many many moons ago it was originally for the air injection.
they were committed to production when the idea was abandoned.

BS? maybe but it makes sense.

Iron, Edelbrock or Indy heads will all work well for you. 

jcisworthy, the difference in flow between Edelbrock advertised and what you get could just be the difference in the flow benches used, though I'm sure Edelbrock will advertise the best numbers they can find (the ones they flowed could be cleaned up some...)

About the sealing area...  IMHO you may as well port out at least part of that lower area. The gasket is still going to seal on the smaller area, what you leave above the gasket won't help. Unless of course you're thinking about the possibility of going back to a stock manifold at some point. Then the extra sealing area might come in handy. You might want to compare a stock manifold gasket to the header gasket.

If you've already considered this (and there's a good chance you have!) I apologize for pointing out the obvious...

When it comes to street and mild racing, Edelbrock is a better choice for weight reduction and higher flow with less work. It's essentially the bolt-on option but it's restricted to the fat bore engines only. The Indy heads are for hard race. Production value is good and those tall chambers are exciting but I have issue with the large valves and the amount of material to seal them.

I fear no man. But those heads. They scare me. O_o

jcisworthy wrote: Iron, Edelbrock or Indy heads will all work well for you.  There was an old article where a mild 401 boosted made over 700hp using hardly touched iron heads and something like 14 lbs boost.

That article you are referencing was from Hot Rod. It is the build which I based mine off of. I went with Eddy heads, roller cam and just a tad more compression so I am gessing I would be making at least as much in the HP/TQ numbers but suspect it is likely a little more. I was inspired by the article you might say.