These heads have Heavy-duty, 1.89" inconel exhaust valves that provide added durability for marine applications, Hard anodized to protect the aluminum in the harsh marine environment, sold with valves only to allow for valve spring choices.
Match with an Edelbrock Performer RPM manifold, Performer Series 750 cfm marine carb and Performer RPM cam for proven performance. Smaller-than-stock 11/32" valve stems promote excellent flow and lighter valve weight.
Cylinder Head Style Assembled
Cylinder Head Material Aluminum
Cylinder Head Finish Natural
Combustion Chamber Volume (cc) 110
CNC-Machined Combustion Chamber No
Intake Runner Volume (cc) 290cc
Exhaust Runner Volume (cc) 110cc
CNC-Machined Intake Runner No
CNC-Machined Exhaust Runner No
Combustion Chamber Style Open chamber
Intake Port Shape Oval
Intake Port Location Standard
Exhaust Port Shape Round
Exhaust Port Location Standard
Intake Valves Included Yes
Intake Valve Diameter (in) 2.250 in.
Exhaust Valves Included Yes
Exhaust Valve Diameter (in) 1.890 in.
Valve Springs Included No
Damper Spring Included No
Retainers Included No
Locks Included No
Valve Stem Seals Included No
Rocker Arm Studs Included Yes
Rocker Arms Included No
Rocker Arm Nuts Included No
Guideplates Included Yes
Accessory Bolt Holes Drilled Yes
Valve Guides Included Yes
Valve Guide Material Manganese bronze
Valve Seats Machined Yes
Valve Seat Machine Style 3-angle
Valve Seat Material Ductile iron
Steam Holes Drilled No
Oiling Style Through pushrod
Machined for O-Ring No
Heat Crossover No