AFR 215cc LSX Mongoose Strip Cylinder Heads 1530

The AFR 215cc LS1 Mongoose cylinder head is designed 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 an impressive 312 CFM @0.600" of lift, ensuring excellent performance for your LS engine build.

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, less than 235° duration (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)

8mm 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.

215cc Competition Flow Chart

Lift .200 .300 .400 .500 .550 .600

Intake (CFM) 149 215 259 293 300 303

Exhaust (CFM) 111 150 209 225 230 233

Test conducted at 28" of water (pressure) on Superflow 1020

Bore Size: 4.060", intake 3/4" radius plate exhaust, 1 3/4" curved pipe

Specifications & Features

Material: A356 Aluminum

Intake Port Volume: 215cc

Exhaust Port Volume: 85cc

Combustion Chamber Size: 65cc

Valve Angle: 15°

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