Best Bang for the Buck Head???

eddys

more resistant to ping, less weight on the nose, you can just order them from a supplier that can port them for you..

but like brian (or someone else?) said, you will gain on top end nothing on the bottom. so higher revs is where you will see a difference. THAT being said, if you plan on making use of the power at higher revs, you better make damn sure you are doing it right. solid lifters (no hydraulics not even if they claim to be high rpms reccomended by NASA or whatever) go solid. adjustable rockers. best oiling system you can get.

but there will be some who say oh yeah hydraulics are fine you can run 7500 rpms then one day you have something break & a valve drop on top of your piston lol.

like others have mentioned, it depends on the purpose of the build. if you are just cruising around any old head will do. iron, aluminum, whatever. bracket racer, go for the best dont try to nickle and dime your way up with increments then you will end up spending quarters and 50cent pieces because you were trying to save pennies.

i'm a big fan of building a 2nd engine out of the car then swapping it in when you are ready. in-car bolt on upgrades generally dont get the job done as well.