AFR 15° LS1 210cc Enforcer As Cast 64cc Chambers

The AFR 210cc LS1 Enforcer Cylinder Head is designed with AFR's Permanent Mold “As-Cast” Technology, ensuring precise and repeatable port location and performance. This budget-friendly cylinder head is an excellent choice for OEM LS engines operating below 6300 RPM. Despite its affordability, it comes fully assembled with high-quality components found in AFR’s premium CNC-ported heads, including PAC Racing springs, Viton valve seals, machined bead valve locks, hardened spring seats, and one-piece 8mm 21-4N stainless steel valves. For DIY enthusiasts, a bare version is also available.

Sold individually—two required per engine.

Included Components

As-Cast Combustion Chambers
As-Cast Exhaust Ports
As-Cast Intake Ports
3-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" max lift, Max RPM 6300-6500 – AFR #8017
7° Chrome Moly Retainers 1.245” OD x .885” ID x .655” ID – AFR #8514
7° Bead Lock Valve Keepers – AFR #9007
Viton Valve Seals .620" OD x .490" ID – AFR #6615
Hardened Valve Spring OD Locator 1.380" OD x .570" ID – AFR #8042

210cc Street Head Flow Chart

Lift (in.)	.200	.300	.400	.500	.550	.600
Intake (CFM)	148	209	253	265	268	268
Exhaust (CFM)	105	150	180	199	204	207

Specifications & Features

Material: A356 Aluminum
Intake Port Volume: 210cc
Intake Port Dimension: 3.190"H x 1.015"W x 5/16" top 3/8" bottom
Intake Port Location: Stock
Exhaust Port Volume: 82cc
Exhaust Port Dimension: 1.400" H x 1.660" W
Exhaust Port Location: Stock
Combustion Chamber Size: 64cc
Valve Angle: 15°
Valve Spring Pocket Diameter: 1.500" OD
Deck Thickness: 0.425"
Minimum Bore Diameter: 3.900"
Flat Mill: .006" per cc (58cc Maximum)
Spark Plug Dimensions: 14mm x .750" w/Tapered seat

Important Notice

CARB Status: These products are illegal for use on any public highway, including paved or unpaved roadways or public parks. They are only legal for dedicated racing vehicles. Violation can result in penalties up to $37,500 per vehicle, DMV registration revocation, and loss of public roadway use.