netwalker

I bought some of these a while back and have yet to put them in. I plan on eventually installing a cam, but for now this is a more attractive option due to money and time that it will take to install them on my 98 Z28.

My question is, when I decide to change my cam, can I still use the 1.8's if I match the cam/springs/pushrods/etc to it or will I need to get a different ratio?

Also, will I need to change my springs with the 1.8's or can I run the stock LS1 springs?

2000ultraZ1911

Did you have to get special rockers? My buddy has a 98 and with the 98 perimeter style headsand all the roller rockers were for 99 and up with the center bolts.

JakeFusion

iTrader: (7)

Changing rockers on these cars for a performance bump is a terrible idea.

Cheap headers will make 4-5X the power.

Exeodus

iTrader: (1)

The 1.8 ratio may cause PTV issues depending on the cam you choose. Best to ask the vendor if you will have issues.

Your stock springs may not be enough as those rockers are heavier than stock and may cause the valves to float at higher RPM.

vettenuts

iTrader: (4)

Yes, you likely need new springs. 1.8's will work with some cams. A lot of guys run then with the hot cam or ASA cam for more lift.