upgrade rockers or keep stock rocker ?

Hey, guys i need your opinion, I have 04 GTO just bought a used 03 zo6 heads. Should I replace the rockers or keep the stock rockers? My mods are :comp cam xr275hr-12 Duration: @ .050lift intake 222 Exhaust 224
112 degree lobe separation angle
lift: intake .566 Exhaust .568
comp cams 7.4" moly pushrods
2800 stall torque converter
drag bag
rear stablizer bar by slp
I am also considering port & polish the heads, anyone know a good shop ?
My current rwhp is 362hp
My goal is to push 400 RWHP
Any imput will be greatly appreciated.

You don't have to get new ones. But there are some that end up loosing their bearings. I went with the new Yella Terra's. They are a very nice rocker and actually seem to make a little HP. At least on mine, it was making a little more before I spun the clutch on the dyno.

How much is the rockers & where did you get it ? How much more h/p did rockers give you?

New Era Performance is where I got them. How much HP? Don't really know. I'd say 5-8rwhp or so.

You don`t need aftermarket rockers . The stockers are fine .

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Originally Posted by blewbyu2

You don`t need aftermarket rockers . The stockers are fine .

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:cheers:
100% truth unless of course your using the L92 heads like me and need a bigger intake rocker,blahhh