World Sportsman II Small Block Chevy Iron Heads, Straight Plug
Chevy Small Block V8, Cast Iron, Natural, 60cc - 69cc Combustion Chamber Volume Range
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.
Straight Plug, 64cc Chambers
NotesHead 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.
- 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
824-1112 Instructions (PDF)
- Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
What's In The Kit
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