Part # 8241122
World Sportsman II Small Block Chevy Iron Heads, Straight Plug
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World Products4 Reviews
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16 Questions
- Combustion chambers available in 64cc
- The rocker cover rails are fully machined
- Available with either angle, or straight spark plugs
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Product Summary
- Combustion chambers available in 64cc
- The rocker cover rails are fully machined
- Available with either angle, or straight spark plugs
- Engineered to provide 30-70 horsepower gains over OEM heads
- Features a higher, wider, raised roof intake runner with improved short turn radius
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Key Specs
| Cylinder Head Style | Select Type |
| Material Type | Cast Iron |
| Finish | Natural |
| Combustion Chamber Volume | 64cc |
| Intake Runner Volume | 200cc |
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Details
The industry’s most popular true high performance cast iron cylinder head has been continuously improved since its introduction over 20 years ago. With 200cc intake and 69cc exhaust ports, World’s Sportsman II heads offer 30-70 horsepower gains over OEM heads, yet are 50-state emissions legal.
- Bolt on from 30 to 70 additional H.P. (Dyno Proven)
- Combustion chambers available in 64cc
- Available with either angle, or straight spark plugs
- 200cc intake runners
- Fully machined rocker cover rails
- Higher, wider, raised roof intake runner with improved short turn radius
- 50-State Emissions legal
- Recommended spark plug is a 14mm-5/8", .460" reach with a tapered seat
- STRT assembly: Valve springs suitable for Hydraulic lifter cams up to 0.550" lift (includes spring # 180-671515)
- FLAT assembly: Valve springs suitable for Solid lifter cams up to 0.650 lift (includes spring # 915-99893)
- RACE assembly: Valve springs suitable for Solid Roller cams up to 0.680" lift (includes spring # 915-99876)
Please specify cam lift in comments section when ordering heads.
Assembled heads are built to order.
Item Details
Straight Plug, 64cc Chambers
Head Flow @ .600 Lift245 intake, 165 exhaust (Super Flow 1050)
260 intake, 176 exhaust (Super Flow 600)
All heads flowed with a standard .750 " intake plate, without exhaust tube, and 28 " of water.Head Flow @ .600 Lift
245 intake, 165 exhaust (Super Flow 1050)
260 intake, 176 exhaust (Super Flow 600)
All heads flowed with a standard .750 " intake plate, without exhaust tube, and 28 " of water.
Charts
Specs
- Casting ID Number: I-037
- Material: High density cast iron
- Valve Seats: Intake (integral), exhaust (hardened)
- Valve Guides: Integral cast iron
- Spring Seats: Machined for 1.560" and 1.250"
- Valve Diameter: 2.020"" intake, 1.600" exhaust (11/32" stem)
- Rocker Arm Studs: Screw-in style
- Rocker Arms: 1.5 ratio (use of 1.6 ratio will require elongation of pushrod holes)
- Intake Runner: 200cc, standard port location
- Exhaust Ports: 69cc, standard location
- Combustion Chamber: 64cc, straight or angled plug orientation
- Spark Plug: 14mm 5/8" .460" reach tapered style
- Valve Job: Multi-angle intake and radiused exhaust
- Valve Cover Rail: Raised w/ perimeter and center bolt pattern
- Valve Angle: Stock 23°
- Accessory Bolt Holes: Stock
Specifications
Specifications
| KEY SPECS | |
|---|---|
| Brand | World Products |
| Cylinder Head Style | Select Type to see |
| Material Type | Cast Iron |
| Finish | Natural |
| Combustion Chamber Volume | 64cc |
| Intake Runner Volume | 200cc |
| GENERAL | |
| Exhaust Runner Volume | 69cc |
| Combustion Chamber Volume Range | 60cc - 69cc |
| Intake Runner Volume Range | 200cc - 209cc |
| Exhaust Runner Volume Range | 60cc - 69cc |
| Spark Plug Style | Straight |
| Intake Port Shape | Rectangle |
| Exhaust Port Shape | Square |
| Intake Valve Diameter | 2.020" |
| Exhaust Valve Diameter | 1.600" |
| Sold in Quantity | Pair |