Hey everyone. I own a 90 Camaro RS with a 5.0 tbi engine. I know that these engines were rated at only 170hp. I am trying to get it to make about 250-260hp. So far I have added a 3" borla cat back exhaust, Hedman headers with 2.5" y pipe, underdrive pulleys and a K&N filter charger. Any idea what I'm making now with these mods and what's the easiest cheapest way to get to where I want to be.
Please help!

 

get a flat tappet cam