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AFR Chevy 335cc Enforcer As-Cast BBC Cylinder Head, 122cc Chambers, Assembled

AFR 3001
AFR's 335cc BBC Enforcer Cylinder head features their 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 509 to 540 Cubic Inch operating below 6500 RPM.

Sold as a single piece, 2 pieces required per engine. 122cc combustion chambers.
Shipping: FREE continental USA ground shipping on ALL AFR Cylinder Heads
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Description

The all-new BBC 335cc Enforcer cylinder head features its 2.250" intake valves, 1.880" exhaust valves and come equipped with their 8002 hydraulic roller valve springs. This combination will support a 0.725" lift camshaft and up to 6,700 RPM. They come fully assembled with the identical components found in their higher-end CNC ported cylinder head; 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 ductile iron seats (not powdered metal) their one-piece 8mm 21 4N Stainless Steel valves. 

Sold as a single piece, 2 pieces required per engine.

 

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 600
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe

Basic Package Components Part #
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 AFR #7620
11/32” Nail Head Exhaust Valve, 1.880” x 5.450” O.A.L. AFR #7630
PAC Racing #1940 1.550” OD Hydraulic Roller Dual Valve Spring 175 lbs. on seat, .725” maximum lift, Max RPM 6500-6700 AFR #8002
10º Manley Steel Retainers 1.500” O.D x 1.120” I.D x .705” I.D AFR #8511
10° 11/32" Valve Locks with lashcap recess AFR #9005
ARP 7/16" Rocker Exhaust Studs AFR #6406
ARP 7/16" Rocker Intake Studs AFR #6407
3/8” Guide Plates AFR #6110
11/32" Viton Valve Seals AFR #6613
Hardened Valve Spring I.D Locator 1.550” O.D x .780” I.D AFR #8048

Specifications, Features, and Optional Supporting Components
Head 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 Raised .375"
Combustion Chamber Size

122cc
Valve Cover Bolt Pattern
 Perimeter Bolt
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"
Intake Port Gasket AFR #6856
Exhaust Port Gasket

AFR #6856
Head Gasket, Fel-Pro #1047 (Gen V and VI)

AFR #6849
Head Gasket, Fel-Pro #1017-1 (Gen IV)

AFR #6850
Head Bolts, ARP 135-3703 (Gen IV)

AFR #6306
Head Bolts, ARP 135-3707 (Gen V)

AFR #6308
Head Studs, ARP 235-4713

AFR #6307
Head Bolt Washers, Manley

AFR #6320
Suggested Manifold

Victor Jr or Super Victor
Flat Mill .006" per cc/ Maximum 105cc As Cast
Angle Mill .009" per cc/Maximum 100cc As Cast
Spark Plug Starting Range Autolite 3924
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. .

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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
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