ok heres a long one. ill try to cover it all.
first, as for porting stock heads, if you try to get brave and redesign the ports or bowls or chambers you will hurt flow a little if youre not experienced. however, there isnt much you can do to hurt stock heads as any porting will help them. you dont need experience to grind off the smog bumps in the exhaust or gasket match the ports. and these are important areas on these heads. now, like i said ive been in this before all this head hype started and we've been going fast with no problem. tfs, afr,edelb. all work but not like they should. nor are they used properly. these companies just took advantage of the market and make money. simple proof.... who here has a nice set of heads that cost them 1000+ $ and is going 12's or 11's? just about everyone. now, back in 90 we were going 12's with basic bolt ons and stock heads. no mass air stuff, heads injectors etc. they werent even out yet. so stock stuff is just as good to a point. now, the aluminum heads craze. what are the benifits of aluminum heads? more prone to damage, run hotter, sealing problems, some have bad valve geometry, and of course we pay alot for that good stuff. but hey, they sure do look cool. and they save weight. so you save 50 lbs. what does that mean to the street driver? nothing. how about the bracket racer? well in theory it will add about .05 in the qtr. and help weight transfer. about the same as a battery relocation. yes, aluminum heads are good. when used properly.
i can go into so much with this but thats another topic.
as for the best heads (stock) for anyones 302, well, there all the same. it depends on what your plans are and how much you want to do to them. my 2 favorite heads are 69 351w heads and 289 hi-po heads. both bolt on and both make power. if you want to stay in the newer years then any 87 and up head will work. get a set of cheap heads, youll be happy with them. oh and the best kick, iron make more power than aluminum anyway.
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