Heads/pushrod Question



I was hoping someone here would be able to help me out...
I have a COMP CAM: 232/236, 575/578, 113+2 LSA and I am looking at buying these heads:
http://forums.corvetteforum.com/sho...6977&forum_id=1
Livernois Motorsports CNC Ported LS2/LS6 Cylinder Heads
-New GM LS2/LS6 243 casting
-5 axis CNC machined
-Fully Assembled
-New valves
-New valve springs good to ~ .580 lift
-Flow over 300 cfm on std 3.900 bore
-No core required
-The valves are stock LS6 valves which are 2.000" Intake and 1.550" Exhaust.
(I am upgrading the springs to a set of COMP 918s)
I was wondering if there was a formula that would tell me what pushrods would be the best for my applications? I am looking at some of these:
http://www.thunderracing.com/catalo...&vid=7&pcid=106
Thanks in advance,
Micah


