Yella Terra Ultralite 1.7 Ratio Bolt On Non-Adjustable Rocker Arms Gen 3/4 LS1/LS2/LS6 - YT6645
50% less nose weight compared to factory rocker arms offers greater RPM potential and reduced valve float.
VALVE COVER SPACERS WILL BE REQUIRED YT5132
400 LB open spring pressure max - lightweight springs or factory springs are recommended
