LSR Cathedral Port 231/239 Hydraulic Roller Cam for GM LS GEN III/IV Chevrolet The Edelbrock #60575 Performer cylinder

The Edelbrock #60575 Performer cylinder head is designed for outstanding performance gains in 1962-79 389-455 c

our cross member is designed to tuck tight against the vehicle chassis and will not effect vehicle ground clearance

GM has this feature laced into the engine calibration files and would require full ECM tuning to enable cruise again

larger intake valves and refined bowl blending for improved flow

while Viking double adjustable shocks effectively control rear suspension damping

LSR Cathedral Port 231/239 Hydraulic Roller Cam for GM LS GEN III/IV Chevrolet The Edelbrock #60575 Performer cylinderVery wide power range and excellent mid range torque for LS engines with cathedral port cylinder heads.