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Ok, just for giggles, lets start off with a few facts. A performance engine is more than just an assembly of various parts. You have to think of it as a system. Therefore, there is little point to worrying about a cam grind of any design (vintage or other) unless you have the system figured out. I know that Phil and John P. agree with me on this point. There is not much point to guessing on a cam in your set-up. You could end up with something that is not what you want. Either Phil's cam or John's would be good choices given your stated use for the engine.
As for the head, I would do as was suggested and make sure that all the volume is not taken out of the head - but keep some of that volume and deck the block. My B20 needed 0.020" to get a zero deck - I further modified this to get the pistons to come 0.004" out of the block to get the squish as tight as I could.
The dual springs people are alluding to are a stock Isky part (pn 625-626) and are meant for a small block Olds. You'll need retainers etc - again all from Isky. They aren't all that expensive compared to the rest of what you're proposing. The lifters have been covered. Again, stock replacement parts for other engines. They work fine.
For what you are proposing, the stock FI exhaust manifold is fine (just port it and get the restrictions out of it. I've done several of these and it doesn't take much to make them pretty darn good. A header is going to help out up high in the rev range, but the stock manifold is pretty good.
Sorry if this is preachy, but when I saw Strombergs and performance in the same thread I wondered.
Craig
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b20 cams [140-160]
