Product DescriptionEMPI HIGH PERFORMANCE CYLINDER HEADS
High Quality special aluminum alloy, permanent mold casting makes for a strong Cylinder
head that looks as good as it functions. Features 12mm, 3/4” reach plugs, silicone bronze
valve guides and with 40mm / 35.5mm valve seats installed.
• Special aluminum alloy for strength and stiffness
• Permanent mold casting
• 12mm, 3/4” reach plugs moved away from valve seats to
eliminate stress cracks
• Bronze valve guides
• Valve seats installed (40mm Intake / 35.5mm Exhaust)
• Increased port wall thickness for porting
• Exhaust air passages are clear for proper cooling
• Weldable for custom work
• Rocker, Exhaust and Intake studs included
DUAL PORT CYLINDER HEADS W/COMPETITION VALVE JOB-COMPLETE
Complete Dual Port Cylinder Head, cut for 90.5/92 Cylinders, Competition Valve Job by Performance Technology, assembled with stainless steel 40mm intake and 35.5 Exhaust Valves, DUAL Hi-Rev Valve Springs, Chromoly Retainers and Hardened Keepers.
98-1391-B Dual Port Cylinder Head, w/Competition Valve Job, for 92mm w/dual valve springs, Complete, Each.