Is it worth the time in advancing that cam if the duration is to wide? or should i change it out? I don't have anymore info on it then what i've listed. I thought i had the tune down pretty good from the chassis dyno. I did try different launch rpm's and shift points. I do understand that the 60' is critical and until i sort that it's gonna be slow. With a correct cam for this engine wouldn't it be ideal to have the heads flowed?