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Vehicle Info NeededCHEVROLET PERFORMANCEPART NUMBER: 809-12480011
SB2.2 NASCAR Aluminum Cylinder Head Standard .500" Guide Holes
$3,04263
Ships on 09/16/2026
Lowest Price GuaranteeStandard 4.400" Bore Spacing
- SB2.2 NASCAR Aluminum Cylinder Head
- Standard .500'' Guide Holes
- Bare (No seats or guides installed)
Emissions Note:
This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
Chevrolet Performance SB2.2 NASCAR Aluminum Cylinder Heads improve durability, simplify preparation, and lower the cost of building/maintaining a competitive small block race engine. "Mirror" intake ports are all angled toward the center of the engine, making these heads perfect for single 4-barrel applications. The spark plug holes were moved for greater combustion efficiency, and 48cc chambers can produce 12.1:1 compression with standard flat-top pistons.
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Features- Sold individually
- HIP-treated* aluminum heads
- Extra-thick deck for heavy flat milling
- Extra port material for custom porting
- Intake/Exhaust Ports: "As-Cast" Peanut
- Valve spring pads accommodate 1.625" springs
- T-washers installed in all four center head bolt bosses
- Replacement -8AN intake port plugs available #809-12480171
- Revised spark plug location for angled 14mm, 5/8" hex, 3/4" reach, gasket seat plugs
- Designed for longer-than-stock 2.150"/1.625" valves and aftermarket shaft-mounted rocker arms
- 4.400" Bore Spacing: 48cc "As-Cast" Combustion Chambers and 11° x 4° Intake, 8° x 0° Exhaust Valve Angles
- 4.500" Bore Spacing: 28cc "As-Cast" Combustion Chambers and 11° x 4° Intake, 7° x 2° Exhaust Valve Angles Requirements
- Specific left-hand and right-hand pistons
- Valve Covers #809-12480006 or #809-12480012
Part TypeCylinder Head
Product LineChevrolet Performance SB2.2 NASCAR Aluminum Cylinder Heads
BrandCHEVROLET PERFORMANCE
Package Height6.1
Package Width8.7
Package Length21.5
Weight31.2 PG
Part CategoryPerformance Parts
Casting Number12480011
Plug TypeAngled
Head Casting Number12480011
MaterialAlum
Intake Valve Diameter2.15
Valve Angle (Deg)SB2.2
Port TypeSB2.2
Guide Plates IncludedNo
Combustion Chamber Volume48
Intake Valve Lift (In)2.15
Part FitmentSemi Universal
Intake Runner Volume (Cc)-
Grade TypePerformance
Exhaust Valve Diameter1.625
Vendor Part Number12480011
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
