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Depend on how fast you want to spin it, but a lot of guys don't like the hollow stem valves because they tend to snap if the piston kisses the valve in the event of valve float. If you are concerned with valve train weight, you will want titanium retainers as well.
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2010 SS - Kind of an On3 kit, CTR 78/80, CompCam 239/251 620/632 122+4, E85, Z28 suspension and ZL1 diff with Outlaw axles. Gen6 ZL1 brakes.
2011 Vert - 416/w 230/236 .612/.602 115lsa, 1LE suspension w/32mm rear bar. Z28 diff. Gen6 ZL1 brakes.
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