i just recently dropped a 350 SS engine into my 1990 GMC Sierra. i would like to start modifying the truck for the track. what mods should i first do to the engine. keep in mind that im not richy rich, so no off the wall supercharger ideas. just cant afford that right now. if anyone with some expert ideas. please post, it would be greatly appreciated. and when i change the cams, what ratio should i use for max performance and horsepower

 

headers, intake, cam, n2o?