Technical Specifications of...
Man O'War 18° Cylinder Heads

Material: 355 T6 Aluminum
Valve Seats: Hardened Steel
Valve Guides: Bronze
Valve Spring Seats: Machined for 1.550" diameter springs
Valve Size: 200cc Head: 2.020 x 1.600. 235cc Head: 2.080 x 1.600
Rocker Arm Studs: 3/8" (-1 & -2), 7/16" (-3) screw-in studs
Exhaust Flange: Stock port locations. Dual bolt pattern accommodates large custom headers
Included In Base Assembly: Manley forged stainless steel valves with swirl-polished heads, umbrella-style seals (-1 & -2 models), PC style (-3), Hardcore valve springs, Manley 7° (-1 & -2 models), 10° (-3) chrome moly retainers and locks.