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AFR Chevy 238cc Enforcer As-Cast LS3 Bare Cylinder Head, 72cc Chambers, Bare
AFR 1804
AFR's 238 LS3 Enforcer Cylinder head 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. The AFR 238cc LS3 Enforcer is the first Enforcer casting with 100% AFR design. With a smaller valve and port, this head outflows your OE LS3 casting by up to 20CFM at low lifts, offering greater performance potential. This budget friendly head is perfect for your OEM engine operating below 6300 RPM.
Head comes completely bare, no parts.
Sold as a single piece, 2 pieces required per engine.
Head comes completely bare, no parts.
Sold as a single piece, 2 pieces required per engine.
Shipping: FREE continental USA ground shipping on ALL AFR Cylinder Heads
Was:
$912.78
Sale:
$612.78
Save:
33%
Save:
$300.00
Description
AFR's 238cc LS3 Enforcer Cylinder head feature a 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.
| 238cc LS3 As Cast Flow Chart | |||||||
| .200 | .300 | .400 | .500 | .550 | .600 | .650 | |
| Int | 157 | 229 | 276 | 307 | 315 | 308 | 308 |
| Exh | 112 | 152 | 182 | 204 | 209 | 215 | 217 |
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
| Basic Package Components | Part # |
| As-Cast Combustion Chambers As-Cast Exhaust Ports As-Cast Intake Ports Competition 5-angle Valve Job |
| Head Material |
A356 Aluminum |
| Intake Port Volume | 238cc |
| Intake Port Dimension |
2.540"H x 1.190"W x 7/16° Radius |
|
Intake Port Location
|
Stock |
| Exhaust Port Volume | 92cc |
| Exhaust Port Dimension |
1.500" H x 1.740" W |
| Exhaust Port Location |
Stock |
| Combustion Chamber Size |
72cc |
|
Valve Cover Bolt Pattern
|
Center Bolt |
| Valve Angle |
12° |
| Valve Spring Pocket Diameter |
1.490" O.D |
| Max Valve Spring Pocket Machining |
1.510" O.D |
| Warning: Do not machine spring pad any deeper. | |
|
Deck Thickness
|
.750" |
| Minimum Bore Diameter |
4.000" |
|
Flat Mill - 65cc chamber
|
.006" per cc 62cc Maximum |
|
Spark Plug Dimensions
|
14mm x .750" w/ Tapered or Gasket Seat |
| Intake Port Gasket |
Factory GM or Aftermarket |
| Recommend Rockers - OEM w/ trunion upgrade Yella Terra 6733 w/ 5132 Valve Cover gasket. |
Scorpion 1162 |
| Exhaust Port Gasket |
GM #12558573 |
| Head Gasket | Cometic 4.160 Bore Size |
| Head Bolts (04+), ARP 134-3610 |
AFR #6334 |
| Head Studs (04+), 2004 & Later Blocks ARP #234-4317, Pre 2004 Blocks ARP #234-4316 |
AFR #6335 |
| Head Bolt Washers, Manley |
AFR #6320 |
| Suggested Manifold |
FAST 92mm or 102mm |
| Spark Plug Starting Range |
NGK TR55 |
| Pushrods: Longer than Stock (see instructions for details) |
Details
- AFR 1804
- AFR 1804
- Air Flow Research
- New
Categories
Shipping Information
- Item Requires Shipping
- 65.0 lbs.
- W12.0000” x H12.0000” x L24.0000”
- Free Basic Shipping
- This item ships in its own box.
- FREE continental USA ground shipping on ALL AFR Cylinder Heads
- TRE Performance Difference
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