World Products 030040 Merlin Oval Port BB Chevy Cylinder Heads (1 Head)

Worlds MERLIN series has earned a reputation as the performance industry standard for Big Block Chevy power. The cast iron MERLINS are available in both oval and rectangular port designs, with intake ports offered in 269cc, 320 and 350cc configurations. Choose the port size that will provide the optimum balance of flow and velocity for your engine combination. They are available bare or in complete assemblies that feature multi-angle valve jobs, Manley stainless steel valves and valve springs matched to camshaft requirements. World Products Merlin cylinder heads for big Chevys combine large intake runners with open combustion chambers to produce good torque and low-end power. Assemblies include valves, springs, retainers, keepers, chromemoly screw-in studs, and hardened steel guideplates. -1 Assembled Heads: Hydraulic Flat Tappet Cam 1.550": 125 lbs. @ 1.980", 300 lbs. @ 1.380", coil bind @ 1.160" MAX LIFT @ .600" (oval port only). -2 Assembled Heads: Mech. Flat Tappet or Hydraulic Roller Cam 1.550": 150 lbs. @ 1.910", 350 lbs. @ 1.260", coil bind @ 1.210" MAX LIFT @ .650". -3 Assembled Heads: Solid Roller Street Cam 1.550": 225 lbs. @ 1.910", 520 lbs. @ 1.210", coil bind @ 1.160", max lift MAX LIFT @ .700" -4 Assembled Heads: Solid Roller Race Cam 1.640": 275 lbs. @ 2.000 ", 600 lbs. @ 1.210", coil bind @ 1.050" MAX LIFT @ .900"