Cam/heads or turn boost up
Motor is stock 99 ls1 with rod bolt and head studs.
Questions is whats next. Ordering a rear soon and now that i've got some rubber under it want to turn it up so ,
heads
cam
or turn it up. I need to get a different waste gate spring and want to switch it to E85. My goal right now is 650 ( with the correction factor ) to the tire.
Can I get there with just turning the boost up and running E85 or should I look for heads and a cam. Heads are stock 853's turbo is 76mm precession.
thanks in advance.

