AFR's 210 LS1 Enforcer Cylinder Head features its Permanent Mold “As-Cast” Technology surfaces on the intake runners, exhaust runners and combustion chambers that allow for extremely accurate and repeatable port location/performance. This budget-friendly head is perfect for your OEM engine operating below 6300 RPM.
Sold as a single piece, 2 pieces required per engine.
| 210cc LS1 Street Head Flow Chart | ||||||
| .200 | .300 | .400 | .500 | .550 | .600 | |
| Int | 148 | 209 | 253 | 265 | 268 | 268 |
| Exh | 105 | 150 | 180 | 199 | 204 | 207 |
Test conducted at 28" of water (pressure) on Superflow 600
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe
| Basic Package Components | Part # |
| As-Cast Combustion Chambers AS-Cast Exhaust Ports As-Cast Intake Ports 3-angle Valve Job |
| Specifications, Features, and Optional Supporting Components |
| Head Material |
A356 Aluminum |
| Intake Port Volume |
210ccm |
| Intake Port Dimension |
3.190"H x 1.015"W x5/16 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 Cover Bolt Pattern
|
Perimeter Bolt |
| Valve Angle | 15° |
| Valve Spring Pocket Diameter |
1.500" O.D |
| Max Valve Spring Pocket Machining |
1.500" O.D |
|
Deck Thickness
|
0.425" |
| Minimum Bore Diameter |
3.900" |
| Spark Plug Dimensions |
14mm x .750" w/Tapered seat |
| Head Gasket |
Factory GM LS2 |
| Intake Port Gasket |
GM or FAST |
| Exhaust Port Gasket |
GM#12558573 |
| Head Bolts (97-03) |
AFR #6330 |
| Head Studs (97-03) |
AFR #6331 |
| Head Bolts (04+) |
AFR #6334 |
| Head Studs (04+) |
AFR #6335 |
| Head Bolt Washers, Manley |
AFR #6320 |
| Suggested Manifold |
FAST 90mm, 92mm, or 102mm |
| Flat Mill | .006" per cc 58cc Maximum |
| Spark Plug Starting Range | NGK TR55 |
