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iTrader: (3)

I Have A 04 Chevy Truck With A 408 Ci. Motor, 225/62cc Afr Heads, Harland Sharp 1.8 Roller Rockers And Running A Little Cam....

I Think I M Ready To Step It Up. I Want To Put A Magic Stick 4 Cam In My Truck... Should I Keep The 1.8 Rocker Arms?

1989GTA

I would talk with the cam manufacturer. With the aggressive cams most do not recommend 1.8 rocker arms. You can get into valve float and actually lose horsepower.