I have the original 327 in my 69 vert. It was originaly a 2 barrel engine with 210 HP. It is now 30 over with forged flat top pistons in it, 64 cc 194 intake heads with the 350 HP 327 chev camshaft 447 lift. In the past I ran it with headers and a torker intake with a 600 holley carb and it ran well.
I am almost at the end of a frame off Resto project and have installed the original exhaust manifolds with a stock dual exhaust. I am going for a stock look for the engine I know it should be a 2 barrel but I can't live with that.
I have decided to go with a Q-jet carb and would like to run a repro cowl intuction air cleaner setup to go with my cowl hood. I have a Edelbrock Performer RPM on it now with the holley this manifold fits square bore carbs only. The car has a 3.73 posi 12 bolt with a turbo 400 Trans {2004r in the future}. I am unsure what manifold I should go with. I am thinking with the stock exhaust a plain performer may be better suited to the engine so then I thought how much better is a performer than a stock Iron 4 barrel manifold? I can get a stock Iron manifold and Q-jet with a hot air type choke for a really good price. I don't mind buying a new one but do you guys think with my engine combo the performer would be that much better?

It sounds like you have a nice engine going for you already. The performer should give you more torque than the stock cast iron intake. How much more, I really don't know. Maybe someone here will chime in with some first hand experience. Since it's a 327 (relatively small in the cube department like my 302), I'd imagine that you'd want as much torque as you can get out of it. Did the 350 hp 327 come factory with an aluminum intake similar to that of the Z/28? If it did, I'd definitely stick with the performer. Plus from an appearance stand point, it's tough to beat the good looks of an aluminum intake, but that's just my opinion.

whoa whoa whoa, wait a minute.

you can spend $15 on an adapter that lets you put square/spreadbore carbs on your manifold. Go for that rather than buy a whole new manifold.

whoa whoa whoa, wait a minute.

you can spend $15 on an adapter that lets you put square/spreadbore carbs on your manifold. Go for that rather than buy a whole new manifold.

Those adapters are "icky"!

He, He!!

"Icky", just think of it as a "spacer" that adds power and it will be cool, imho..

He, He!!

pdq67