World Products 011150-2 Small Block Chevy Sportsman II Cast Iron Cylinder Head. Applications: 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°.
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. 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'' Exhaust Flange: Stock locations, 7-bolt universal pattern.
Included In Assembly: Erson stainless steel valves, ring and band-style seals, valve springs, Erson 7° chrome moly retainers and keepers. 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 Screw-in Studs: 3/8" or 7/16" with 7/16"-14 base thread Pushrod Guidplates: Flat 5/16" Erson 601 or equivalent 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 equivalent. 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 seats). 040'' Maximum Angle Mill approx.
NOTE:These specifications are for reference only. JEGS High Performance 101 Jeg's Place Delaware, Ohio 43015. The item "World Products 011150-2 Small Block Chevy Sportsman II Cast Iron Cylinder Head" is in sale since Monday, January 16, 2012. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Cylinder Heads & Parts". The seller is "jegsperformance" and is located in Delaware, Ohio.This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Russian federation, Israel, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica.