Technical Specifications of...
Windsor Jr. & Windsor Sr. Cylinder Heads

Material: High density cast iron
Valve Seats: Integral intake, hardened steel exhaust
Valve Guides: Integral cast iron
Valve Spring Seats: Machined for 1.250/1.550" springs (stepped)
Valve Size: 1.940" (Windsor Jr.) or 2.020" (Windsor Sr.) x 1.600"
Rocker Arm Studs: 3/8 " 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)valve springs, Manley 7° (-1 & -2), 10° (-3) chrome moly retainers
Reommended Installation Items:
Rocker Arms: Aftermarket roller rocker arms recommended. However, if stock rockers are to be retained, use stud mounted rockers
Head Gaskets: Fel-Pro #9333PT (or #1011-2) or equivalent. Caution: #1011-1 is NOT recommended.
Pushrods: Requires heat-treated pushrods.
Spark Plugs: Accepts 14mm .460" reach 5/8" hex tapered seat Accel 276 or equivalent
Intake Gasket: Fel-Pro #90361 or equivalent
Exhaust Gasket: Fel-Pro #1415 or equivalent