Weight your options on heads too. Check out how much to do all the work on a iron head before you shell out the money. Porting is not cheap. If it gets anywhere past $600 you may be better off getting a aluminum head like that from 440 source. You will also have less tendency to detonate with aluminum heads. Another plus if you have junk gas where you live.
But on another note if you have the alcohol blended fuel (higher octane) where you live you should take advantage of it and build a high compression motor.
Allen
Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first.
Life was a little easier when I was just a wrench.
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