AFR's 215cc mongoose cylinder heads a recommended for moderate street or street/strip builds with displacements up to 408 cubic inches operating at or below 6500 RPM. This medium sized, high velocity torque monster flows 312 CFM @0.600" of lift.
215cc LSX Aluminum Cylinder Head Flow Chart
Tested on 4.060 Bore.
Included Components
- 100% CNC Ported Combustion Chambers
- 100% CNC Ported Exhaust Ports
- 100% CNC Ported Intake Ports
- Competition 5-angle Valve Job
- 8mm Bead Lock Intake Valve, 2.020” x 4.900" Overall Valve Length: AFR #7207
- 8mm Bead Lock Exhaust Valve, 1.600” x 4.900" Overall Valve Length: AFR #7228
- PAC Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring, 140 lbs on seat, .600" maximum lift, Max RPM 6300-6500: AFR #8017
- 7° Titanium Retainers 1.245" O.D x .885" I.D x .655" I.D: AFR #8512
- 7° Bead Lock Valve Keepers: AFR #9007*
- Viton Valve Seals .600" O.D x .495" I.D: AFR #6612
- Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D: AFR #8042
- Ductile Iron Intake Valve Seats 2.131" O.D x 1.680" I.D x .375" Deep: AFR #9059
- Ductile Iron Exhaust Valve Seats 1.650" O.D x 1.350" I.D x .375" Deep: AFR #9069
- 8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L: AFR #9051
*LSX bead locks and aftermarket bead locks are not interchangeable. GM made their bead lock radius and depth different. AFR locks are the same as GM LSX.
Recommended Components:
- Intake Port Gasket: GM or FAST
- Exhaust Port Gasket: GM#12558573
- Head Gasket, Cometic 4.160 .040": AFR #6848
- Spark Plug Starting Range: NGK TR55
Specifications & Features:
- Material: A356 Aluminum
- Intake Port Volume: 215cc
- Intake Port Dimension: 3.275"H x 1.120"W x5/16 top 3/8 bottom
- Intake Port Location: Stock
- Exhaust Port Volume: 85cc
- Exhaust Port Dimension: 1.415" H x 1.710" W
- Exhaust Port Location: Stock
- Combustion Chamber Size: 65cc
- Valve Cover Bolt Pattern: Center Bolt
- Valve Angle: 15°
- Valve Spring Pocket Diameter: 1.510" O.D
- Max Valve Spring Pocket Machining: 1.525" O.D
- Deck Thickness: .750"
- Minimum Bore Diameter: 3.900"
- Flat Mill : .006" per cc 58cc Maximum
- Minimum Cross Sectional Area: 2.260 sq. in.
- Spark Plug Dimensions: 14mm x .750" w/Gasket Seat
