Description
AFR offers Enforcer top-end kits for a wide range of Chevy and Ford small block engine applications from the 1950s and up. The kits include straight or angle plug Enforcer cylinder heads (* see below)—plus single or dual plane intakes, valve covers, gaskets, head bolts, intake manifold bolts, spark plugs and more. Order the kit recommended for your year/make and engine.
* AFR SBC Enforcer cylinder heads feature 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. These budget-friendly heads are perfect for your 350 to 400 cu. in. engine operating below 6,000 rpm. They come fully assembled with the identical components found in AFR's higher end CNC-ported cylinder heads, such as ARP rocker studs, PAC Racing springs, Viton ® valve seals, AFR adjustable guide plates, machined bead valve locks, hardened spring cups and ductile iron seats, and one -piece 8mm 21 4N stainless steel valves.
Brand: Airflow Research (AFR)
Manufacturer's Part Number: 3900-TEKT
Part Type: Top End Kits
Product Line: AFR Enforcer Top End Kits
HP Direct Part Number: AFR-3900-TEKT
Cylinder Heads Included: Yes
Camshaft Included: No
Camshaft Type: Hydraulic Roller Tappet
Intake Manifold Included: Yes
Fuel Delivery Style: Carbureted
Carburetor Included: No
Throttle Body Included: No
Fuel Rails Included: No
Fuel Injectors Included: No
Intake Material: Aluminum
Intake Color: Natural
Intake Style: Dual plane
Intake Manifold Name: Airflow Research Enforcer
Timing Chain and Gears Included: No
Lifters Included: No
Gaskets Included: Yes
Cylinder Head Style: Assembled
Cylinder Head Material: Cast aluminum
Cylinder Head Color: Natural
Combustion Chamber Volume (cc): 64
CNC-Machined Combustion Chamber: No
Combustion Chamber Style: Heart
Intake Runner Volume (cc): 195cc
Exhaust Runner Volume (cc): 76cc
CNC-Machined Intake Runner: No
CNC-Machined Exhaust Runner: No
Intake Port Location: Standard
Intake Port Shape: Rectangular
Exhaust Port Shape: Square
Exhaust Port Location: Standard
Spark Plug Style: Straight
Intake Valves Included: Yes
Intake Valve Diameter (in.): 2.020 in.
Exhaust Valves Included: Yes
Exhaust Valve Diameter (in.): 1.600 in.
Intake Valve Angle: 23
Exhaust Valve Angle: 23
Valve Springs Included: Yes
Outside Diameter of Outer Spring (in.): 1.290 in.
Damper Spring Included: Yes
Number of Springs Per Valve: Dual
Retainers Included: Yes
Retainer Material: Chromoly steel
Locks Included: Yes
Lock Style: 7 degree
Valve Stem Seals Included: Yes
Rocker Arms Included: No
Rocker Arm Studs Included: Yes
Rocker Arm Nuts Included: No
Guideplates Included: Yes
Guideplate Pushrod Size: 5/16 in.
Pushrods Included: No
Valve Covers Included: Yes
Valve Cover Material: Cast aluminum
Valve Cover Color: Polished
Valve Cover Mounting Style: Perimeter bolt
Accessory Bolt Holes Drilled: Yes
Valve Guides Included: Yes
Valve Seats Machined: Yes
Valve Seat Machine Style: 3-angle
Valve Seat Material: Ductile iron
Steam Holes Drilled: No
Machined for O-Ring: No
Heat Crossover: No
Quantity: Sold as a kit.
* AFR SBC Enforcer cylinder heads feature 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. These budget-friendly heads are perfect for your 350 to 400 cu. in. engine operating below 6,000 rpm. They come fully assembled with the identical components found in AFR's higher end CNC-ported cylinder heads, such as ARP rocker studs, PAC Racing springs, Viton ® valve seals, AFR adjustable guide plates, machined bead valve locks, hardened spring cups and ductile iron seats, and one -piece 8mm 21 4N stainless steel valves.
Brand: Airflow Research (AFR)
Manufacturer's Part Number: 3900-TEKT
Part Type: Top End Kits
Product Line: AFR Enforcer Top End Kits
HP Direct Part Number: AFR-3900-TEKT
Cylinder Heads Included: Yes
Camshaft Included: No
Camshaft Type: Hydraulic Roller Tappet
Intake Manifold Included: Yes
Fuel Delivery Style: Carbureted
Carburetor Included: No
Throttle Body Included: No
Fuel Rails Included: No
Fuel Injectors Included: No
Intake Material: Aluminum
Intake Color: Natural
Intake Style: Dual plane
Intake Manifold Name: Airflow Research Enforcer
Timing Chain and Gears Included: No
Lifters Included: No
Gaskets Included: Yes
Cylinder Head Style: Assembled
Cylinder Head Material: Cast aluminum
Cylinder Head Color: Natural
Combustion Chamber Volume (cc): 64
CNC-Machined Combustion Chamber: No
Combustion Chamber Style: Heart
Intake Runner Volume (cc): 195cc
Exhaust Runner Volume (cc): 76cc
CNC-Machined Intake Runner: No
CNC-Machined Exhaust Runner: No
Intake Port Location: Standard
Intake Port Shape: Rectangular
Exhaust Port Shape: Square
Exhaust Port Location: Standard
Spark Plug Style: Straight
Intake Valves Included: Yes
Intake Valve Diameter (in.): 2.020 in.
Exhaust Valves Included: Yes
Exhaust Valve Diameter (in.): 1.600 in.
Intake Valve Angle: 23
Exhaust Valve Angle: 23
Valve Springs Included: Yes
Outside Diameter of Outer Spring (in.): 1.290 in.
Damper Spring Included: Yes
Number of Springs Per Valve: Dual
Retainers Included: Yes
Retainer Material: Chromoly steel
Locks Included: Yes
Lock Style: 7 degree
Valve Stem Seals Included: Yes
Rocker Arms Included: No
Rocker Arm Studs Included: Yes
Rocker Arm Nuts Included: No
Guideplates Included: Yes
Guideplate Pushrod Size: 5/16 in.
Pushrods Included: No
Valve Covers Included: Yes
Valve Cover Material: Cast aluminum
Valve Cover Color: Polished
Valve Cover Mounting Style: Perimeter bolt
Accessory Bolt Holes Drilled: Yes
Valve Guides Included: Yes
Valve Seats Machined: Yes
Valve Seat Machine Style: 3-angle
Valve Seat Material: Ductile iron
Steam Holes Drilled: No
Machined for O-Ring: No
Heat Crossover: No
Quantity: Sold as a kit.
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