im building a 6.0 with a z06 cam and ported factory heads with the decks cut about 25 thousandths.i have 1.75 roller rockers,long tubes a ported throttle body and going to get a cutom tune.im wondering if theres more horse to be found by me advancing my timing gear. a local builder is telling me its work it by going 2 degrees but im not sure and dont want to damage anything.my came has a 112 lobe seperation also if that changes anything.thanks for any help........happy easter everyone!!