383 for a 67 cuda

xingcuda said

My budget for the whole car is about 15k to 20k. I was going to put about 7k to 10k in the engine, trans, and rear end.


I checked the cylinder heads I have for the casting number and they were 2206324. After looking around it shows them as 1961-1962 Intake 2.08 Exhaust 1.60.

Can the heads be opened up and if so by how much?

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I believe they are the earlier version of my 516's. For your power output, the small ports and the work necessary to get them to flow isn't worth the effort in my opinion. If you want to stick to factory heads, any of the newer designs, 915's 346's 906's 452's etc. have much more flow potential. Unless you get a deal on a used, PROFESSIONALLY done set, ( home hogged out, big valve factory heads often flow LESS than if they were left alone) You really need to know what you are doing to get good numbers. The Edelbrocks, Stealths, etc. will be cheaper than most professionally prepped factory heads. I have a set of 906's that I have $1,500 in, and they were done 10 years ago.