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When NASCAR drivers need race-winning horsepower and torque, they turn to one company: Air Flow Research. For over thirty years, Air Flow Research has been engineering...
When NASCAR drivers need race-winning horsepower and torque, they turn to one company: Air Flow Research. For over thirty years, Air Flow Research has been engineering cylinder heads that deliver unmatched flow and power output. Manufactured with advanced porting technology, AFR heads are flow-tested and subjected to a rigorous quality control process to ensure maximum performance in all applications. Whether you pilot a top fuel dragster or a street machine, Air Flow Research has a set of cylinder heads designed for you. Shop AFR cylinder heads at Summit Racing!
When NASCAR drivers need race-winning horsepower and torque, they turn to one company: Air Flow Research. For over thirty years, Air Flow Research has been engineering cylinder heads that deliver unmatched flow and power output. Manufactured with advanced porting technology, AFR heads are flow-tested and subjected to a rigorous quality control process to ensure maximum performance in all applications. Whether you pilot a top fuel dragster or a street machine, Air Flow Research has a set of cylinder heads designed for you. Shop AFR cylinder heads at Summit Racing!
AFR valve seat inserts are the perfect replacements for existing worn or damaged components in your high performance vehicle. They are made of premium-quality materials and built to exacting tolerances to offer an exceptional fit to prevent valve leaks.
( 1 )
$13.65
Airflow Research developed these 185cc SBF Enforcer cylinder heads for maximum small block Ford performance. They're manufactured from tough but lightweight A356 aluminum and feature 185cc intake runners and 64cc combustion chambers. Enforcer heads feature a 0.325 in. deck, stock valve locations, and are designed for blocks with a minimum bore of 4.000 in. The heads are available bare or fully assembled with stud mount rocker mounting.
( 21 )
$767.55
AFR 180cc SBC Eliminator street heads are available in your choice of straight or L98 angle plug versions. These cylinder heads feature a 75cc or 65cc combustion chamber with a 64cc exhaust port and a 3/4 in. thick head deck (ideal for nitrous or blower applications). Standard valves are lightweight, 8mm, and have a 2.020 in. intake and 1.600 in. exhaust with AFR's hardened ductile iron interlocking valve seats. The valve springs included are intended for use on roller camshafts. These heads' exceptional flow characteristics, 23 degree valve angle, and standard valve spacing make them the perfect street heads for 327 to 350 c.i.d. engines in the idle to 5,500 rpm operating range (higher rpm ranges are possible, depending on the combination of parts). Eliminator cylinder heads carry CARB E.O. #D-250-2 when used on 1969-94 applications with the heat riser. They're also available for your 1987 and later engines with centerbolt valve covers and two center intake bolts at 72 degree angles; Vortec-style cylinder heads are available, too. Their dual valve cover bolt pattern is standard and their exhaust port is raised .100 over GM L98 cylinder heads.
( 9 )
$2,052.75
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$2,328.90
Have you ever tried to install a rocker stud into your cylinder head and watched it wobble as it screwed in? Don't take a risk installing bad rocker arm studs that may botch up your Eliminator or Outlaw race cylinder head installation. Just replace the bad with the new--AFR rocker arm studs that run in straight and true! These rocker arm studs are made of premium-grade chromoly steel and are heat-treated to tensile strength. Plus, stud lengths are exact to provide positive seating every time. AFR--a name you can trust!
( 2 )
$58.80
AFR 377cc Magnum BBC Competition racing heads feature 100 percent CNC-ported intakes, exhausts, and chambers; A356 aluminum castings, Titanium retainers, and high-quality components throughout. These Magnum BBC heads are best suited for large displacement (540 plus) racing engines operating at or below 7600 rpm. They are available assembled and bare. AFR assembled 377cc Magnum BBC heads typically include: * 11/32 in. intake valves * 11/32 in. Tulip exhaust Valves * PAC Racing Spring 1.625 O.D. Solid Roller, 275 lbs. on seat, .850 maximum lift * 10 degree Titanium retainers * 10 degree 11/32 in. valve locks with lash cap recess * ARP 7/16 in. rocker intake and exhaust studs * Adjustable 3/8 in. guide plates * 11/32 in. Viton® valve seals * Hardened spring cup * Intake and exhaust valve seats * 11/32 in. intake and exhaust bronze valve guides
Not Yet Reviewed
$4,601.10
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$5,344.50
AFR 245cc NPP SBC Eliminator racing cylinder heads are their largest and most powerful 60/40 head for the small block Chevy. These competition-ported heads feature 100 percent CNC-machined intake runners, exhaust ports, and combustion chambers. With A356 aluminum castings and high-quality components throughout, these NPP—no pushrod pinch—units have extra machining for 3/8 in. pushrod clearance. AFR 245cc NPP SBC Eliminator heads are offered with stock or spread port exhaust, and steel or titanium retainers, as well as bare.
( 1 )
$3,492.30
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$4,204.20
AFR 190cc Vortec Eliminator Street cylinder heads have exceptional flow characteristics, are 50-state street legal, and the preferred choice over rebuilt factory heads. They feature 100 percent CNC-ported chambers, A356 aluminum castings, and high-quality components. These heads are recommended for street, strip, and towing engines operating up to 6,000 rpm from 350 to 383 cu. in. For performance, strength, and ease, install AFR 190cc Vortec Eliminator Street cylinder heads. Additional features include: * 3/4 in. extra-thick head deck * 2.020 in. intake and 1.600 in. exhaust valves * Center and perimeter valve cover bolt patterns * 0.100 in. raised exhaust port * Not compatible with self-aligning rocker arms
( 4 )
$2,391.90
Are you building your own personal street/strip weapon? These AFR 195cc SBF Competition cylinder heads are designed for you. To make big horsepower, you need heads that can flow large amounts of air--that's where AFR, the masters of airflow come in. These heads feature a 195cc intake port, 70cc exhaust ports, and your choice of 58 or 72cc combustion chambers to complement your engine. To get the fuel and air in and out efficiently, AFR uses lightweight 8mm 2.050 intake valves and 1.600 exhaust valves. The thick deck makes these heads ideal for nitrous or blower applications with the optional nitrous/blower exhaust port. These heads are most at home on performance engines operating primarily between 2,000 and 7,000 rpm. Dominate the street and strip with the help of AFR and these 195cc SBF Competition cylinder heads.
( 1 )
$2,686.95
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$2,947.35
Looking to increase the performance of your Gen III-powered vehicle? AFR 185cc Black Hawk Gen 3 Hemi cylinder heads are to be offered in as-cast and fully CNC ported versions, either assembled or as no-parts (bare) heads to provide the power and performance Mopar enthusiasts crave. Manufactured using A356 aluminum and permanent-mold technology, AFR castings are second to none. Assembled pairs will come with high-quality components, such as PAC Racing springs, Titanium (CNC versions) or stainless steel retainers, AFR valves, and Viton® valve seals.
Not Yet Reviewed
$1,464.00
Looking to increase the performance of your Gen III-powered vehicle? AFR 224cc Black Hawk Gen 3 Hemi cylinder heads are to be offered in as-cast and fully CNC ported versions, either assembled or as no-parts (bare) heads to provide the power and performance Mopar enthusiasts crave. Manufactured using A356 aluminum and permanent-mold technology, AFR castings are second to none. Assembled pairs will come with high-quality components, such as PAC Racing springs, Titanium (CNC versions) or stainless steel retainers, AFR valves, and Viton® valve seals.
Not Yet Reviewed
$1,805.00
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$2,105.00
AFR 260cc LS3 Mongoose cylinder heads are 100 percent 5-axis, CNC-ported, and feature titanium retainers, A356 aluminum castings, and Pac Racing springs. These CARB certified heads require 4.000 in. or larger bore applications on up through 454 cu. in. engines operating at or below 7,000 rpm—and flow over 380 cfm at 0.700 in. lift and are designed primarily for street and strip applications. Other structural features include Air Flow Research's trademark 3/4 in. thick head deck, reinforced rocker stud bosses, and thick wall runners provide unparalleled durability. Use of AFR stud girdles and full roller rocker arms are required. When it comes to building power, start with these AFR 260cc LS3 Mongoose cylinder heads.
( 3 )
$3,011.40
Looking to increase the performance of your Gen III-powered vehicle? AFR 212cc Black Hawk Gen 3 Hemi cylinder heads are to be offered in as-cast and fully CNC ported versions, either assembled or as no-parts (bare) heads to provide the power and performance Mopar enthusiasts crave. Manufactured using A356 aluminum and permanent-mold technology, AFR castings are second to none. Assembled pairs will come with high-quality components, such as PAC Racing springs, Titanium (CNC versions) or stainless steel retainers, AFR valves, and Viton® valve seals.
Not Yet Reviewed
$1,805.00
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$2,105.00
AFR 195cc SBC Enforcer Cylinder heads feature their 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. These budget-friendly heads are perfect for your 350 to 400 cu. in. operating below 6,000 rpm. They come fully assembled with the identical components found in their 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, hardened spring cups and ductile iron seats, and their one piece 8mm 21 4N stainless steel valves. The AFR 195cc SBC Enforcer cylinder heads are available in straight or angle plug, assembled or bare.
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$434.70
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$789.60
AFR's 335cc BBC Enforcer cylinder heads feature 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. These budget-friendly heads are perfect for your 509 to 540 cu.in. operating below 6,500 rpm. They come fully assembled with the identical components found in AFR's 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 AFR's one-piece 8mm 21 4N stainless steel valves. Order the cylinder heads recommended for your year/make and engine application.
( 5 )
$664.65
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$1,023.75
AFR 210cc LS1/LS2/LS6 Enforcer cylinder heads are available in standard and small bore applications. They 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. The budget-friendly heads are perfect for your OEM engine operating below 6,300 rpm. Fully assembled Enforcer models include the identical components found in AFR's higher end CNC-ported cylinder heads—such as PAC Racing springs, Viton® valve seals, machined bead valve locks (not stamped), hardened spring seats, and one-piece 8mm 21 4N stainless steel valves. The heads are available without any parts for the DIY. Sold as a single piece, two heads are required per engine.
( 1 )
$562.80
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$780.15
AFR 300cc Magnum BBC cylinder heads are suggested for aggressive builds. They boast 100 percent CNC-ported intake, exhaust, and chambers—as well as A356 aluminum casting and high-quality components throughout. These oval port competition packages are available with hydraulic or solid roller springs; and bare or assembled style.
( 3 )
$3,690.75
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$4,336.50
AFR 220cc SBF Renegade 20 Degree Competition Heads are the largest, best-flowing choice to top your small block Ford. These power-producing cylinder heads are born of A356 aluminum castings and feature intake ports, exhaust ports, and combustion chambers that are all 100 percent CNC-ported. Renegades are outfitted with lightweight 8mm, 2.100 in. intake valves and 1.570 in. exhaust valves to move massive amounts of air. They come with either combustion chamber volumes of 58 or 72cc accompanied by 70cc exhaust ports, which are raised .375 in. higher than stock. Plus, AFR's trademark 3/4 in. thick cylinder head deck makes them ideal for heavy nitrous or blower applications. Choose the flow characteristics that can give your Ford the power to win—AFR 220cc SBF Renegade 20 degree competition heads.
( 12 )
$2,837.10
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$3,143.70
Don't let their size fool you—AFR Magnum 305cc "as-cast" heads with a CNC bowl blend will provide you with flow numbers that most medium-sized heads, and some larger, can only dream about. This line was designed to optimize low and mid-lift airflow, while still generating impressive peak figures. Their application should be focused on smaller cu. in. Chevy big blocks (396-502) with a primary operating range of 2,500-6,800 rpm (this range is an average and will vary with engine displacement, as well as component selection). AFR 305cc Magnum BBC heads should also be given strong consideration in larger street-driven or marine applications up to 555 c.i.d., where low-rpm power and drivability are factors. These cylinder heads would be a great choice if you're looking for big torque and strong low-rpm performance and still have good rpm capabilities. The heads come standard with AFR's trademark 3/4 in. thick head deck, reinforced rocker stud bosses, and premium one-piece stainless steel 2.250 in. intake valves and 1.880 in. exhaust valves. Standard combustion chamber volume is 119cc. These heads are available with an optional 114cc combustion chamber as well.
( 1 )
$3,158.40
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$4,050.90
Are you looking for big torque and horsepower numbers? AFR's 325cc Magnum big block Chevy line of medium-volume intake runners will provide you with exactly that. The phrase "having your cake and eating it too" would certainly be appropriate with their moderately sized intake runners producing tremendous flow figures across the entire lift range. These high-flow/high-velocity ports provide extreme versatility and fill the needs of many applications. From a max-effort high-compression 454 to a 605 c.i.d. low-rpm marine application, these aluminum cylinder heads would be a great choice. AFR Magnum heads would also be ideal in larger cubic inch Pro Street applications with their broad torque range, as well as their significant rpm and horsepower capabilities. These cylinder heads will work best with a primary operating range of 3,000-7,000 rpm (this range is an average and will vary with engine displacement as well as component selection). These 325cc heads come standard with AFR's trademark 3/4 in. thick head deck, reinforced rocker stud bosses, and premium one-piece stainless steel 2.300 in. intake and 1.880 in. exhaust valves. The standard combustion chamber volume is 119cc on these AFR's 325 "as-cast" pieces. The heads are available with an optional 114cc combustion chamber as well.
( 1 )
$3,158.40
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$4,050.90
If huge horsepower is what you are searching for, AFR 357cc Magnum aluminum cylinder heads will certainly deliver. With AFR's fully CNC-ported 357cc heads flowing 425 cfm, they represent the ultimate in airflow for your big block Chevrolet. These cylinder heads were targeted at larger cu. in. engines (509-632 c.i.d.) looking for maximum horsepower and rpm capabilities with a primary operating range of 3,500-8,000 rpm (this range is an average and will vary with engine displacement and component selection). These aluminum heads also provide impressive torque figures at higher rpm levels. Blown, turbo, and nitrous engines will especially like the larger, higher flowing intake ports. AFR 357cc Magnum BBC cylinder heads will work best with camshafts exceeding 0.750 in. gross valve lift to make better use of the substantial airflow found in the higher lift range. The AFR 357cc heads come standard with AFR's trademark 3/4 in. thick cylinder head deck, reinforced rocker stud bosses, and premium one-piece stainless steel 2.300 in. intake and 1.880 in. exhaust valves. The AFR's fully CNC-ported 357 heads come with a 121cc chamber and are available with an optional 114cc combustion chamber as well. Order the cylinder head model suited to your needs.
Not Yet Reviewed
$4,591.65
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$5,184.90
AFR 385cc Magnum BBC competition racing heads will feed your large displacement, high-rpm race engine the air it needs to deliver monster performance. The 385cc Magnum features AFR's trademark .750 in. thick head deck, A356 aluminum castings and Titanium retainers, as well as 100 percent CNC-ported intakes, exhausts, and combustion chambers to deliver the big flow characteristics to provide you with the power you need to win! Keep your monster engine both strong and powerful—allow it to feast on the plentiful airflow of the AFR 385cc Magnum BBC competition racing heads.
Not Yet Reviewed
$4,601.10
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$5,344.50
AFR 265cc Oval Port Magnum BBC cylinder heads are designed to be used on engine displacement up to 468 cu. in. operating at or below 6,200 rpm—providing tons of bottom-end torque, tremendous throttle response, and great all-around power. Recommended for street, strip, or towing applications, these torque monsters can flow 354 cfm at 0.650 in. lift. These units feature a 3/4 in. thick deck, along with reinforced rocker stud bosses, and thick, rugged castings. Want high-flowing power? Then choose these 265cc Oval Port Magnum BBC cylinder heads from AFR. Additional features include: * Intake runners and exhaust ports are partially CNC-machined * Competition 5-angle valve job * 3/8 in. guideplates * A356 aluminum material
( 9 )
$2,484.30
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$3,214.05
AFR 457cc Magnum BBC 18 degree cylinder heads were built specifically for high horsepower race applications. The Magnum 18 heads flow an impressive 498 cfm at 1.000 in. lift with 457cc runners, 90cc combustion chamber, and 143cc exhaust. The intake ports are raised .500 in. with the valves rolled to 18 degree, resulting in unparalleled under-the-curve flow numbers. These big block Chevy heads are ideal for 540 cu. in. or larger race engines. AFR has been defining what it means to make power on Chevy engines for years. Now you can strap on a pair of their best performing, highest flowing heads, their 457cc Magnum BBC 18 degree cylinder heads.
Not Yet Reviewed
$2,665.95
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$3,273.90
AFR 195cc SBC Eliminator Street Heads are fully CNC-machined (combustion chamber, intake, and exhaust ports) and available in your choice of straight or angled plug versions. AFR 195cc heads feature a 75cc or 65cc combustion chamber with a 64cc exhaust port and a 3/4 in. thick head deck (ideal for nitrous or blower applications). Standard valves are lightweight 8mm, 2.050 in. intakes (competition versions are 2.080 in.) and 1.600 in. exhausts with AFR's hardened ductile iron interlocking valve seats. The valve springs included are intended for use on roller camshafts. The exceptional flow characteristics of AFR 195cc Eliminators, a 23 degree valve angle, and standard valve spacing make them the perfect street heads for 350 to 400 c.i.d. engines in the 2,000 to 6,500 rpm operating range. They carry CARB #D-250-2 when used on 1969-94 applications with the heat riser. Order the bare or assembled model recommended for your vehicle and engine.
( 40 )
$1,164.45
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$2,328.90
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