just found these on TAS and wonder what kind of improvements i should except. .horsepower gain, if any. I mean for the price, they should be giving something right?
http://www.secureleadercom.com/exsto...nuStatus=block

 

unless the valves are lighter weight dont expect anything out of them, even more hp, lighter valves will improve the response a little and reduce the chance of valve float at very high rpms but you wont get much else out of it
valve float usually happens a couple thousand rpms beyond the f series rpm limit