Enforcer As Cast
AFR's 335cc BBC 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 509 to 540 Cubic Inch operating below 6500 RPM. They come fully assembled with the identical components found in our higher end CNC ported cylinder heads; such as ARP rockers studs, PAC Racing springs, viton valve seals, AFR adjustable guide plates, 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.
| Included Components | |
| 3-angle Valve Job | |
| As Cast Combustion Chambers | |
| As Cast Exhaust Ports | |
|
As Cast Intake Ports |
|
| 11/32" Intake Valve, 2.250" x 5.500" O.A.L | |
| 11/32” Nail Head Exhaust Valve, 1.880” x 5.450” O.A.L. | |
| PAC Racing #1940 1.550” OD Hydraulic Roller Dual Valve Spring 175 lbs. on seat, .725” maximum lift, Max RPM 6500-6700 | |
| 10º Steel Retainers 1.500” O.D x 1.120” I.D x .705” I.D | |
| 10° 11/32" Valve Locks with lashcap recess | |
| ARP 7/16" Rocker Exhaust Studs | |
| ARP 7/16" Rocker Intake Studs | |
| 3/8” Guide Plates | |
| 11/32" Viton Valve Seals | |
| Hardened Valve Spring I.D Locator 1.550” O.D x .705” I.D | |
| 335cc BBC Enforcer Flow Chart | ||||||
| .200 | .300 | .400 | .500 | .600 | .700 | |
| Int | 140 | 207 | 265 | 296 | 336 | 355 |
| Exh | 119 | 172 | 211 | 239 | 249 | 255 |
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 |
335cc
|
| Intake Port Dimension |
2.510"H x 1.820"W x 3/8" Radius
|
| Intake Port Location |
Stock
|
| Exhaust Port Volume |
140cc
|
| Exhaust Port Dimension |
1.690"H x 1.900" W
|
| Exhaust Port Location |
.357" Raised
|
| Combustion Chamber Size(As Cast) |
122cc
|
| Valve Angle |
24°/4° Int, 15°/4° Exh
|
| Valve Spring Pocket Diameter |
1.750"
|
| Max Valve Spring Pocket Machining |
1.750"
|
| Warning::Do not machine spring pad any deeper. | |
| Deck Thickness |
0.45"
|
| Minimum Bore Diameter |
4.25"
|
| Flat Mill |
.006" per cc/ Maximum 105cc As Cast
|
| Angle Mill |
.009" per cc/Maximum 100cc As Cast
|
| Note:Angle mills might require a .120" Thick intake gasket. | |
| Spark Plug Dimensions |
14mm x .750" w/Gasket 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: | |
| Intake Port Gasket | |
| Important:Do not use your AFR gasket as a template to port match your intake manifold as one AFR gasket is used for many AFR runner volumes. . | |
| Exhaust Port Gasket | |
| Head Gasket, Fel-Pro #1047 (Gen V and VI) | |
| Head Gasket, Fel-Pro #1017-1 (Gen IV) | |
| Head Bolts, ARP 135-3703 (Gen IV) | |
| Head Bolts, ARP 135-3707 (Gen V) | |
| Head Studs, ARP 235-4713 | |
| Head Bolt Washers, Manley | |
| Suggested Manifold |
Victor Jr or Super Victor
|
| Spark Plug Starting Range |
Autolite 3924
|
AFR's 335cc BBC 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 509 to 540 Cubic Inch operating below 6500 RPM. They come fully assembled with the identical components found in our higher end CNC ported cylinder heads; such as ARP rockers studs, PAC Racing springs, viton valve seals, AFR adjustable guide plates, 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.
| Included Components | |
| 3-angle Valve Job | |
| As Cast Combustion Chambers | |
| As Cast Exhaust Ports | |
|
As Cast Intake Ports |
|
| 11/32" Intake Valve, 2.250" x 5.500" O.A.L | |
| 11/32” Nail Head Exhaust Valve, 1.880” x 5.450” O.A.L. | |
| PAC Racing #1940 1.550” OD Hydraulic Roller Dual Valve Spring 175 lbs. on seat, .725” maximum lift, Max RPM 6500-6700 | |
| 10º Steel Retainers 1.500” O.D x 1.120” I.D x .705” I.D | |
| 10° 11/32" Valve Locks with lashcap recess | |
| ARP 7/16" Rocker Exhaust Studs | |
| ARP 7/16" Rocker Intake Studs | |
| 3/8” Guide Plates | |
| 11/32" Viton Valve Seals | |
| Hardened Valve Spring I.D Locator 1.550” O.D x .705” I.D | |
| 335cc BBC Enforcer Flow Chart | ||||||
| .200 | .300 | .400 | .500 | .600 | .700 | |
| Int | 140 | 207 | 265 | 296 | 336 | 355 |
| Exh | 119 | 172 | 211 | 239 | 249 | 255 |
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 |
335cc
|
| Intake Port Dimension |
2.510"H x 1.820"W x 3/8" Radius
|
| Intake Port Location |
Stock
|
| Exhaust Port Volume |
140cc
|
| Exhaust Port Dimension |
1.690"H x 1.900" W
|
| Exhaust Port Location |
.357" Raised
|
| Combustion Chamber Size(As Cast) |
122cc
|
| Valve Angle |
24°/4° Int, 15°/4° Exh
|
| Valve Spring Pocket Diameter |
1.750"
|
| Max Valve Spring Pocket Machining |
1.750"
|
| Warning::Do not machine spring pad any deeper. | |
| Deck Thickness |
0.45"
|
| Minimum Bore Diameter |
4.25"
|
| Flat Mill |
.006" per cc/ Maximum 105cc As Cast
|
| Angle Mill |
.009" per cc/Maximum 100cc As Cast
|
| Note:Angle mills might require a .120" Thick intake gasket. | |
| Spark Plug Dimensions |
14mm x .750" w/Gasket 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: | |
| Intake Port Gasket | |
| Important:Do not use your AFR gasket as a template to port match your intake manifold as one AFR gasket is used for many AFR runner volumes. . | |
| Exhaust Port Gasket | |
| Head Gasket, Fel-Pro #1047 (Gen V and VI) | |
| Head Gasket, Fel-Pro #1017-1 (Gen IV) | |
| Head Bolts, ARP 135-3703 (Gen IV) | |
| Head Bolts, ARP 135-3707 (Gen V) | |
| Head Studs, ARP 235-4713 | |
| Head Bolt Washers, Manley | |
| Suggested Manifold |
Victor Jr or Super Victor
|
| Spark Plug Starting Range |
Autolite 3924
|
You’ll be first to know about Air Flow Research products, discounts and special events!
Copyright ©2024 Airflow Research | All rights reserved.
Powered & Designed by Admark Automotive
