i searched for this first but i could not find ne thing help full i have a 99 gsx that i just did the 6 bolt sway but i had the block bored 40 over n got jam 8:2 lower compression raishopistons n i put the 7 bold head on it all in and it starts and idels but when i drive it i wont get power over 4000 rpm can ne 1 help

 

sorry about the spelling