Also forgot, a good water pump too. Like an Edelbrock pump. Higher block pressures tend to squeeze out bubbles and steam pockets which collect/form in the heads and block. This reduces hot spots in the engine allowing more compression also. That said you can also get away with more coolant temp (ie 180 deg thermostat rather than a 160, etc). the main purpose of which is to hepl make more power. A hotter running engine actually produces more power than a cooler running one. Which is really makes me wonder about all those chip kits you see coming with 160 degree thermostats! All they are trying to do is fool the computer into running rich mode. Big whoop. The down side is a cooler running engine running richer which only accelerates things like wear and oil contaminant build up! Well anywhosit. Make sure your entire cooling system is up to snuff or you might have to run a cooler thermostat to stave off the effects of a more powerful engine. Which ultimately won't do squat once the entire cooling system has been saturated with heat!
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