What's the real deal with liters vs power? (archive)

What's the deal with the relationship between liters and power? I basically understand that more liters means more power, but here's a "for example" for you.

I've got 2.8L on my Z. A lot of mustangs have the 5.0 . I was checking out a porsche site that said there is a Porsche GTS with 3.8 liters that has a bhp of 750 hp. A lot of 4 cylinder japanese cars claim +200 bhp. I know that this has probably everything to do with engine type, turbo, etc., but can anybody explain this to me in like an "Idiot's Guide" sort of way?

Thanks,
Ryan

Follow Ups:

A better relationship is with Torque.....(long) Cheuk in Seoul 17:41 4/16/2000 (2)
- Ahem! FWK-Z3 23:02 4/16/2000 (1)
  - Good catch. CYT 00:21 4/17/2000 (0)
That's what they mean by "there is no replacement CYT 12:42 4/16/2000 (3)
- thanks...(more) Ryan in NC 13:45 4/16/2000 (2)
  - Re: thanks...(more) CYT 18:54 4/16/2000 (0)
  - More info... Cheuk in Seoul 17:58 4/16/2000 (0)
There's no substitute for cubic inches....(m) Matt D 12:01 4/16/2000 (0)

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