011150 Sportsman II 200cc Bare Head, 64cc Chamber Angled Plug Iron Cylinder Head

Small Block Chevy Sportsman II Cast Iron Cylinder Head200cc Intake Ports64cc Combustion ChambersCut for 2.020'' Int/1.600'' Exh ValvesAngle PlugBare Head, Sold Individually Bare Head, Sold IndividuallyApplications: World has tested Sportsman-II heads in many applications including 375Hp 9:1 street engines; 450HP 9.8:1 street /strip engines; all the way to 940HP blown alcohol drag race engines. Typical Application Street: 274 Cam: 230/236° .487''/.490'', Dart II Sportsman #955-061010 dual plane intake; 750 cfm carb, 1-3/4'' header. 430HP on 9.8:1 355; 480HP on 383 10.5:1 (varies with displacement and compression ratio). Typical Application Drag Race: Modified 750 cfm carb, 276/284° roller cam, single plane plenum intake, 1-3/4''-plus header. MUST Upgrade to 1.550'' roller valve springs and 10° hardware. Up to 650HP normally aspirated depending on displacement and CR and porting. TECHNICAL SPECIFICATIONS Material: High density cast iron Valve Seats: Integral intake,hardened steel exhaust Valve Guides: Integral cast iron Valve Spring Seats: Machined for 1.250'' springs Valve Size: 2.020'' x 1.600'' Rocker Arm Studs: 3/8" or 7/16" with 7/16"-14 base thread Exhaust Flange: Stock locations, 7-bolt universal patternRecommended Installation Items: Head Gaskets: Fel-Pro #1003 ( 265-350 ) or equivalent Puhshrods: Requires heat-treated pushrods. Use of 1.6 ratio rocker arms require elongation of pushrod holes. Spark Plugs: Accepts 14mm .460'' reach tapered seat 5/8'' hex or equivalent Intake Gasket: Fel-Pro #1205 or equivalent Exhaust Gasket: Fel-Pro #1404 or equivalentMachine Shop Specifications:Maximum Valve Diameter: 2.100'' x 1.600'' or 2.080'' x 1.625'' Maximum Spring Seat Depth (from inside step): .030'' Maximum Spring Diameter: 1.550'' Approximate Milling Guidelines(varies with depth): .0065'' per cc Maximum Flat Mill Depth (up to intake...

• 200cc Intake Ports
• 64cc Combustion Chambers
• Cut for 2.020'' Int/1.600'' Exh Valves
• Angle Plug
• Bare Head, Sold Individually Bare Head, Sold IndividuallyApplications: World has tested Sportsman-II heads in many applications including 375Hp 9:1 street engines; 450HP 9.8:1 street /strip engines; all the way to 940HP blown alcohol drag race engines. Typical Application Street: 274 Cam: 230/236° .487''/.490'', Dart II Sportsman #955-061010 dual plane intake; 750 cfm carb, 1-3/4'' header. 430HP on 9.8:1 355; 480HP on 383 10.5:1 (varies with displacement and compression ratio). Typical...