LS1 Enforcer As Cast
AFR's 210 LS1 Enforcer Cylinder heads feature our Permanent Mold “As-Cast” Technology surfaces on the intake runners, exhaust runners and combustion chambers that allows for extremely accurate and repeatable port location/performance. This budget friendly head is perfect for your OEM engine operating below 6300 RPM. They come fully assembled with the identical components found in our higher end CNC ported cylinder heads; such as PAC Racing springs, viton valve seals, machined bead valve locks (not stamped), hardened spring seats and our one piece 8mm 21 4N Stainless Steel valves. They are available without any parts for the DIY. Sold as a single piece, 2 are required per engine. Please see footnotes for additional information.
| Included Components | |
| As Cast Combustion Chambers | |
| As Cast Exhaust Ports | |
| As Cast Intake Ports | |
|
3-angle Valve Job |
|
| 8mm Bead Lock Intake Valve 2.000” x 4.900” O.A.L. | |
| 8mm Bead Lock Exhaust Valve, 1.570” x 4.915" Overall Valve Length | |
|
PAC Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring, 140 lbs on seat, .600" maximum lift, Max RPM 6300-6500 |
|
| 7° Chrome Moly Retainers 1.245” O.D x .885” I.D x .655” I.D | |
| 7° Bead Lock Valve Keepers | |
| Viton Valve Seals .620" O.D x .490" I.D | |
| Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D | |
| 210cc Street Head Flow Chart | ||||||
| .200 | .300 | .400 | .500 | .550 | .600 | |
| Int | 136 | 199 | 246 | 272 | 276 | 265 |
| Exh | 93 | 140 | 180 | 204 | 211 | 215 |
Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe
| Specifications & Features: | |
| Material |
A356 Aluminum
|
| Intake Port Volume |
210cc
|
| 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 Angle |
15°
|
| Valve Spring Pocket Diameter |
1.500" O.D
|
| Max Valve Spring Pocket Machining |
1.500" O.D
|
| Warning:Do not machine spring pad any deeper. | |
| Deck Thickness |
0.425"
|
| Minimum Bore Diameter |
3.780""
|
| Flat Mill |
.006" per cc 58cc Maximum
|
| Spark Plug Dimensions |
14mm x .750" w/Tapered seat
|
|
CARB Status: THESE PRODUCTS ARE ILLEGAL TO OPERATE ON ANY PUBLIC HIGHWAY. THIS MEANS ANY PUBLIC PAVED OR UNPAVED ROADWAY OR IN A PUBLIC PARK. THESE PRODUCTS ARE ONLY LEGAL IF USED ON A DEDICATED RACING VEHICLE. VIOLATION ARE SUBJECT TO A MAXIMUM PENALTY OF $37,500 PER VIOLATION PER VEHICLE, REVOCATION OF REGISTRATION BY DMV, LOSS OF USE ON PUBLIC RIGHT OF WAYS AND PROOF OF CORRECTION OF THE TAMPERING. |
|
| Recommended Components: | |
| Head Gasket |
Factory GM LS2
|
| Intake Port Gasket |
GM or FAST
|
| Exhaust Port Gasket |
GM#12558573
|
| Head Bolts (97-03) | |
| Head Studs (97-03) | |
| Head Bolts (04+) | |
| Head Studs (04+) | |
| Head Bolt Washers, Manley | |
| Suggested Manifold |
FAST 90mm, 92mm, or 102mm
|
| Spark Plug Starting Range |
NGK TR55
|
AFR's 210 LS1 Enforcer Cylinder heads feature our Permanent Mold “As-Cast” Technology surfaces on the intake runners, exhaust runners and combustion chambers that allows for extremely accurate and repeatable port location/performance. This budget friendly head is perfect for your OEM engine operating below 6300 RPM. They come fully assembled with the identical components found in our higher end CNC ported cylinder heads; such as PAC Racing springs, viton valve seals, machined bead valve locks (not stamped), hardened spring seats and our one piece 8mm 21 4N Stainless Steel valves. They are available without any parts for the DIY. Sold as a single piece, 2 are required per engine. Please see footnotes for additional information.
| Included Components | |
| As Cast Combustion Chambers | |
| As Cast Exhaust Ports | |
| As Cast Intake Ports | |
|
3-angle Valve Job |
|
| 8mm Bead Lock Intake Valve 2.000” x 4.900” O.A.L. | |
| 8mm Bead Lock Exhaust Valve, 1.570” x 4.915" Overall Valve Length | |
|
PAC Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring, 140 lbs on seat, .600" maximum lift, Max RPM 6300-6500 |
|
| 7° Chrome Moly Retainers 1.245” O.D x .885” I.D x .655” I.D | |
| 7° Bead Lock Valve Keepers | |
| Viton Valve Seals .620" O.D x .490" I.D | |
| Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D | |
| 210cc Street Head Flow Chart | ||||||
| .200 | .300 | .400 | .500 | .550 | .600 | |
| Int | 136 | 199 | 246 | 272 | 276 | 265 |
| Exh | 93 | 140 | 180 | 204 | 211 | 215 |
Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe
| Specifications & Features: | |
| Material |
A356 Aluminum
|
| Intake Port Volume |
210cc
|
| 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 Angle |
15°
|
| Valve Spring Pocket Diameter |
1.500" O.D
|
| Max Valve Spring Pocket Machining |
1.500" O.D
|
| Warning:Do not machine spring pad any deeper. | |
| Deck Thickness |
0.425"
|
| Minimum Bore Diameter |
3.780""
|
| Flat Mill |
.006" per cc 58cc Maximum
|
| Spark Plug Dimensions |
14mm x .750" w/Tapered seat
|
|
CARB Status: THESE PRODUCTS ARE ILLEGAL TO OPERATE ON ANY PUBLIC HIGHWAY. THIS MEANS ANY PUBLIC PAVED OR UNPAVED ROADWAY OR IN A PUBLIC PARK. THESE PRODUCTS ARE ONLY LEGAL IF USED ON A DEDICATED RACING VEHICLE. VIOLATION ARE SUBJECT TO A MAXIMUM PENALTY OF $37,500 PER VIOLATION PER VEHICLE, REVOCATION OF REGISTRATION BY DMV, LOSS OF USE ON PUBLIC RIGHT OF WAYS AND PROOF OF CORRECTION OF THE TAMPERING. |
|
| Recommended Components: | |
| Head Gasket |
Factory GM LS2
|
| Intake Port Gasket |
GM or FAST
|
| Exhaust Port Gasket |
GM#12558573
|
| Head Bolts (97-03) | |
| Head Studs (97-03) | |
| Head Bolts (04+) | |
| Head Studs (04+) | |
| Head Bolt Washers, Manley | |
| Suggested Manifold |
FAST 90mm, 92mm, or 102mm
|
| Spark Plug Starting Range |
NGK TR55
|
AFR's 210 LS1 Enforcer Cylinder heads feature our Permanent Mold “As-Cast” Technology surfaces on the intake runners, exhaust runners and combustion chambers that allows for extremely accurate and repeatable port location/performance. This budget friendly head is perfect for your OEM engine operating below 6300 RPM. They come fully assembled with the identical components found in our higher end CNC ported cylinder heads; such as PAC Racing springs, viton valve seals, machined bead valve locks (not stamped), hardened spring seats and our one piece 8mm 21 4N Stainless Steel valves. They are available without any parts for the DIY. Sold as a single piece, 2 are required per engine. Please see footnotes for additional information.
| 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 | |
| 8mm Bead Lock Exhaust Valve, 1.600” x 4.900" Overall Valve Length | |
|
PAC Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring, 140 lbs on seat, .600" maximum lift, Max RPM 6300-6500 |
|
| 7° Chrome Moly Retainers 1.245” O.D x .885” I.D x .655” I.D | |
| 7° Bead Lock Valve Keepers | |
| Viton Valve Seals .620" O.D x .490" I.D | |
| Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D | |
| 210cc 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 1020
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe
| Specifications & Features: | |
| Material |
A356 Aluminum
|
| Intake Port Volume |
210cc
|
| 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 Angle |
15°
|
| Valve Spring Pocket Diameter |
1.500" O.D
|
| Max Valve Spring Pocket Machining |
1.500" O.D
|
| Warning:Do not machine spring pad any deeper. | |
| 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
|
|
CARB Status: THESE PRODUCTS ARE ILLEGAL TO OPERATE ON ANY PUBLIC HIGHWAY. THIS MEANS ANY PUBLIC PAVED OR UNPAVED ROADWAY OR IN A PUBLIC PARK. THESE PRODUCTS ARE ONLY LEGAL IF USED ON A DEDICATED RACING VEHICLE. VIOLATION ARE SUBJECT TO A MAXIMUM PENALTY OF $37,500 PER VIOLATION PER VEHICLE, REVOCATION OF REGISTRATION BY DMV, LOSS OF USE ON PUBLIC RIGHT OF WAYS AND PROOF OF CORRECTION OF THE TAMPERING. |
|
| Recommended Components: | |
| Head Gasket |
Factory GM LS2
|
| Intake Port Gasket |
GM or FAST
|
| Exhaust Port Gasket |
GM#12558573
|
| Head Bolts (97-03) | |
| Head Studs (97-03) | |
| Head Bolts (04+) | |
| Head Studs (04+) | |
| Head Bolt Washers, Manley | |
| Suggested Manifold |
FAST 90mm, 92mm, or 102mm
|
| Spark Plug Starting Range |
NGK TR55
|
AFR's 210 LS1 Enforcer Cylinder heads feature our Permanent Mold “As-Cast” Technology surfaces on the intake runners, exhaust runners and combustion chambers that allows for extremely accurate and repeatable port location/performance. This budget friendly head is perfect for your OEM engine operating below 6300 RPM. They come fully assembled with the identical components found in our higher end CNC ported cylinder heads; such as PAC Racing springs, viton valve seals, machined bead valve locks (not stamped), hardened spring seats and our one piece 8mm 21 4N Stainless Steel valves. They are available without any parts for the DIY. Sold as a single piece, 2 are required per engine. Please see footnotes for additional information.
| 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 | |
| 8mm Bead Lock Exhaust Valve, 1.600” x 4.900" Overall Valve Length | |
|
PAC Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring, 140 lbs on seat, .600" maximum lift, Max RPM 6300-6500 |
|
| 7° Chrome Moly Retainers 1.245” O.D x .885” I.D x .655” I.D | |
| 7° Bead Lock Valve Keepers | |
| Viton Valve Seals .620" O.D x .490" I.D | |
| Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D | |
| 210cc 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 1020
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe
| Specifications & Features: | |
| Material |
A356 Aluminum
|
| Intake Port Volume |
210cc
|
| 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 Angle |
15°
|
| Valve Spring Pocket Diameter |
1.500" O.D
|
| Max Valve Spring Pocket Machining |
1.500" O.D
|
| Warning:Do not machine spring pad any deeper. | |
| 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
|
|
CARB Status: THESE PRODUCTS ARE ILLEGAL TO OPERATE ON ANY PUBLIC HIGHWAY. THIS MEANS ANY PUBLIC PAVED OR UNPAVED ROADWAY OR IN A PUBLIC PARK. THESE PRODUCTS ARE ONLY LEGAL IF USED ON A DEDICATED RACING VEHICLE. VIOLATION ARE SUBJECT TO A MAXIMUM PENALTY OF $37,500 PER VIOLATION PER VEHICLE, REVOCATION OF REGISTRATION BY DMV, LOSS OF USE ON PUBLIC RIGHT OF WAYS AND PROOF OF CORRECTION OF THE TAMPERING. |
|
| Recommended Components: | |
| Head Gasket |
Factory GM LS2
|
| Intake Port Gasket |
GM or FAST
|
| Exhaust Port Gasket |
GM#12558573
|
| Head Bolts (97-03) | |
| Head Studs (97-03) | |
| Head Bolts (04+) | |
| Head Studs (04+) | |
| Head Bolt Washers, Manley | |
| Suggested Manifold |
FAST 90mm, 92mm, or 102mm
|
| Spark Plug Starting Range |
NGK TR55
|
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