Our largest and most powerful 60/40 head for the small block Chevy features 100% CNC machined intake runners, exhaust ports and  combustion chambers. Capable of flowing 350 CFM at 0.800" of lift these heads come equipped with Titanium retainers and high quality components throughout, the 60/40 valve spacing which requires shaft mounted rocker arms for optimum valve train geometry and extra machining for 3/8" pushrod clearance. NPP stands for "no pushrod pinch."
 

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.

Test conducted at 28" of water (pressure) on Superflow 600
Bore Size: 4.155", intake 3/4" radius plate exhaust, 1 7/8" curved pipe

Our 235cc "Competition" heads come with 100% CNC machined intake runners, exhaust ports and combustion chambers. Equipped with Titanium retainers and high quality components, featuring a 60/40 valve spacing which requires  shaft mounted rocker arms for optimum valve train geometry (can be used with .050 offset intake rockers for drag race only applications).
 

Test conducted at 28" of water (pressure) on Superflow 600
Bore Size: 4.155", intake 3/4" radius plate exhaust, 1 7/8" curved pipe

AFR's 227cc "Race Ready" and "Competition" LT4 heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. This head features 60/40 valve spacing and requires shaft mount rocker arms for optimum valve train geometry (can be used with .050 offset intake rockers for drag race only applications).
 

Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.155", 3/4" radius plate exhaust, 1 7/8" curved pipe

AFR’s 210cc “Competition” LT4 heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for race applications and aggressive street/strip builds up to 400 cubic inches, operating up to 6500-6800 RPM. Component upgrade and machining options are available to customize AFR Heads to your specific build (please call for all available options). To ensure trouble free operation of AFR cylinder heads & parts please view the footnotes for additional information. AFR heads are available bare (without parts), call our tech line for details.

Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe

AFR`s 195cc "Competition" heads are the preferred choice for a more aggressive street or street/strip build. They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for displacements up to 400 cubic inches, operating up to 6500-6800 RPM. Legal for 1994 and older emissions controlled vehicles under CARB EO #D-250-2.

Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe

AFR is proud to reintroduce our Slinger Speedway Limited Late Model engine approved cylinder head. This cylinder head features a 100% CNC ported intake, exhaust and combustion chambers, 5 angle AFR valve job, A356 aluminum castings and high-quality components throughout. The AFR/Slinger Cylinder Head will shave roughly 38lbs from the front nose of your vehicle. This cylinder  head must maintain all original manufacturer's specifications. No alterations of any manner permitted. All competitors must pre-register the AFR heads with Slinger Speedway tech officials. Minimum combustion chamber 62cc, maximum 2.08” intake and 1.6” exhaust valves both with minimum stem diameter of 5/16”. Valve spring retainers are the only titanium parts allowed.

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

AFR's 220cc "Race Ready" and "Competition" heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. This is AFR's largest, best flowing head for use with conventional rocker arms. Recommended for race applications or radical "Pro Street" style builds.

Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.155", intake 3/4" radius plate exhaust, 1 7/8" curved pipe

AFR's 227cc "Race Ready" and "Competition" heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. This head features 60/40 valve spacing and requires shaft mount rocker arms for optimum valve train geometry (can be used with .050 offset intake rockers for drag race only applications).
 

Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.155", intake 3/4" radius plate exhaust, 1 7/8" curved pipe

AFR's 210cc "Race Ready" and "Competition" heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for race applications and aggressive street/ strip builds up to 400 cubic inches, operating up to 6500- 6800 RPM.
 

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

AFR's 195cc "Competition" heads are the preferred choice for a more aggressive street or street/strip build. They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for displacements up to 400 cubic inches, operating up to 6500-6800 RPM.

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

AFR’s 180cc “Street” heads are a cost effective performance choice over re-worked factory heads. They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for street, towing, or street/strip engines with displacements up to 383 cubic inches, operating up to 6000 RPM. Legal for 1994 and older emissions controlled vehicles under CARB EO #D-250-2. Component upgrade and machining options are available to customize AFR Heads to your specific build (see pg. 45). To ensure trouble free operation of AFR cylinder heads & parts please view the footnotes on pg. 50 for additional information.

Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe

AFR's 195cc "Street" heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for displacements up to 400 cubic inches, operating up to 6500 RPM. AFR heads are available bare (without parts), call our tech line for details.
Exhaust ports and bolt location are the same as Gen 1 SBC. Please be aware your OE LT exhaust manifolds might not fit perfectly.
Please see footnotes for additional information.

Test conducted at 28" of water (pressure) on Superflow 600
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe

Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe

AFR's 190cc Vortec Street heads are the preferred choice over reworked factory heads. They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for street, towing, or street/strip engines from 350-383 cubic inches, operating up to 6000 RPM. Not compatible with self-aligning rocker arms.
 

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

AFR’s 180cc "Street" heads are a cost effective performance choice over re-worked factory heads. They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for street, towing, or street/strip engines with displacements up to 383 cubic inches, operating up to 6000 RPM. Legal for 1994 and older emissions controlled vehicles under CARB EO #D-250-2. Component upgrade and machining options are available to customize AFR Heads to your specific build (see pg. 45). To ensure trouble free operation of AFR cylinder heads & parts please view the footnotes on pg. 50 for additional information.
 

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

AFR`s 195cc "Street" heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for displacements up to 400 cubic inches, operating up to 6500 RPM. Legal for 1994 and older emissions controlled vehicles under CARB EO #D-250- 2.
 

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

This T&D Shaft Mount System is designed for AFR 227c, 235cc, and 245cc with a 1.5 rocker ratio and .450 offset.  Get the most out of your AFR cylinder heads with these high quality shaft mount systems from T&D Machining.

This T&D Shaft Mount System is designed for AFR 227c, 235cc, and 245cc with a 1.6 rocker ratio and .450 offset.  Get the most out of your AFR cylinder heads with these high quality shaft mount systems from T&D Machining.

This T&D Shaft Mount System is designed for AFR 245cc NPP with a 1.6 rocker ratio and .550 offset.  Get the most out of your AFR 245cc cylinder heads with these high quality shaft mount systems from T&D Machining.

Our new 195cc SBC Enforcer cylinder heads are a budget friendly offering that is available as a “No Parts” head or can be ordered fully assembled with the same great components found in our higher end cylinder heads; such as ARP rockers studs, PAC Racing springs, AFR adjustable guide plates and our Stainless Steel valves.

These heads come with an As-Cast surface on the intake runnners, exhaust runners and combustion chambers. They are a perfect choice for anyone looking to upgrade from the factory Iron pieces. Available in straight or angled spark plug configurations. Sold as a single piece, 2 required per engine.
 

Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe

Air Flow Research is proud to announce the release of our NEW 4810 Eliminator SBC aluminum intake manifold. The new AFR intake manifolds are the perfect way to Eliminate the competition!

• Operating Range 3000-7500 RPM
• CNC port matched to SBC 195cc street cylinder heads
• 4150 carburetor flange
• Cast in nitrous bosses
• Carburetor pad height 4.580" overall
• Dual distributor clamp hold downs
• Front and rear water outlets for additional cooling benefits
• All AFR intake manifolds are cast and machined in the U.S.A.

• Solid Roller Dual Valve Spring 1.580 O.D.
• Erson # E 915043
• 235 lbs. on seat
• .730” max lift
• Max RPM 7200-7400
• Steel Retainer: 8511
• Titanium Retainer: 8505
• SBC/SBF Valve Lock: 9009
• BBC Valve Lock: 9005
• BBF Valve Lock: 9010
• (1 Piece) or (Set of 16)

SBC Eliminator Single Plane Race Manifold 23° (3500 to 8000 RPM) AFR #4811

Designed for SB Chevy 23° heads with standard port location. This manifold is excellent for larger cubic inch serious street/strip or a wide variety of race applications.

• Carburetor pad height is 5.500” with 4150 carb flange
• Comes with cast in nitrous bosses
• Front and rear water outlets for additional cooling benefits
• Dual distributor clamp hold downs
• Specifically designed to fit and optimize your AFR heads with our unique carburetor pad clover shaped pattern
• Cast and machined in the USA
• As Cast Port Dimensions: 2.01" H x 1.09" W

Recommended intake gasket AFR #6901. Recommended carburetor spacer AFR #4450 1” open or AFR #4460 1” four hole, both are made from lightweight composite material to insulate your fuel from heat soak.

• SBC HS Roller Rockers
• .050 Offset
• 7/16" x 1.5
• AFR 227cc and 235cc only

• SBC HS Roller Rockers
• .050 Offset
• 7/16" x 1.6
• AFR 227cc and 235cc only

• Chevy Scorpion Blue Roller Rockers
• 3/8" x 1.6
• Will not fit center bolt valve covers

• Chevy Scorpion Blue Roller Rockers
• 3/8" x 1.5
• Will not fit center bolt valve covers

• Chevy Scorpion Blue Roller Rockers
• 7/16" x 1.5
• Will not fit center bolt valve covers

• Chevy Scorpion Blue Roller Rockers
• 7/16" x 1.6
• Will not fit center bolt valve covers

• 8mm Stem Diameter
• Inconel Exhaust Valve
• 1.600 X 5.030 O.A.L.
• Upgrade for SBC/SBF Exhaust Valves
• (1 Piece) or (Set of 8)