upgrade rockers or keep stock rocker ?

[jinouk67]

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.

[Rob]

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.

[jinouk67]

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

[Rob]

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

[blewbyu2]

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

[speeddemon100]

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

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