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You're dead right about the exhaust bumps. They can be ground away to get a decent HP increase for minimal cost. The stock ford heads are pretty easy for even an amateur to improve since theyre fairly restrictive to begin with.
I'd say an 86 motor would be in the vicinity of 9 or 9.5:1 compression. Not sure how many CC's the heads you have ...
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Here you go!
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I'm assuming youve got the heads off. That bump (thermactor bump) youre talking about can usually be ground off as its just there to ''fix'' emissions. You will gain a reasonable amount of hp for the effort. Dont go nuts porting beyond that if you're not sure what youre doing.
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