Availability
These ATK High Performance Chevy LS 408 short blocks are made to handle some serious power. The foundation of any high performance engine is a rock-solid short block, so ATK designed and developed these to be just that. They feature a fully forged, balanced, and blueprinted rotating assembly that is available in a variety of configurations to fit naturally aspirated, nitrous, and forced induction builds, as well as those with 24 and 58-tooth cranks. These ATK High Performance Chevy LS 408 short blocks include the following: * GM LS Iron blocks * Aligned and hone main bores * Manley 4340 forged crankshaft * 4.00 in. stroke * Manley 4340 H-beam connecting rods * Manley forged pistons
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$4,828.99
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$5,143.99
ATK High Performance Chrysler Gen III Hemi 392 short blocks offer two robust bottom ends for your hot rod. One is perfect for your potent street or race build, while the other is designed for engines that will be running boost or nitrous. These Hemi blocks feature top-of-the-line Scat forged stroker kits. They include clocked camshaft bearings set to the OEM position, plus installed/sealed freeze plugs and oil galley plugs. You wouldn't build a house on sand, so don't start your big block Mopar build with anything less than ATK High Performance Chrysler Gen III Hemi 396 short blocks. Features, items, and specs may include: * Seasoned OE main block (ARP main studs with boost/nitrous version) * 3.927 x 4.050 bore/stroke * Scat 4.050 in. stroke crankshaft (internally balanced) * Scat 4340 forged 6.125 in. connecting rods with ARP bolts * Forged -2cc flat top pistons * Moly or Plasmamoly with steel top ring gapped for boost/nitrous piston rings (depending on application) * 81cc=9.9:1/85cc=9.6:1/89cc=9.2:1 compression ratio (based off .028 in. gasket)
Not Yet Reviewed
$4,199.99
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$4,499.99
BluePrint Engines GM 383 c.i.d. 445 hp dressed power-adder stroker long block crate engines make strong foundations for nitrous, turbos, and blowers. Block features: * Cast iron * 4-bolt main * One-piece rear main seal * Passenger side dipstick * Mechanical fuel pump provision * Drilled and tapped for clutch linkage Rotating assembly: * Forged crankshaft * Forged I-beam connecting rods * Forged pistons Also includes: * Aluminum cylinder heads -- 64cc chamber -- 2.02 in. intake/1.60 in. exhaust valves -- 195cc intake/75cc exhaust runners * Hydraulic roller cam -- .536 intake/.555 exhaust -- 224 intake/236 exhaust duration at .050 -- 113 degree lobe separation * Oil pan * Valve covers * Timing cover * Harmonic balancer * 30-month/50,000-mile Warranty * Dyno-tested and shipped with results
( 1 )
$8,049.00
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.
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$2,052.75
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$2,328.90
On Sale
Race-ready AFR 220cc SBC Eliminator racing heads feature 100 percent CNC-ported intakes with greater detail. They also come with 100 percent CNC-ported combustion chambers and 80cc exhaust ports with a 3/4 in. thick head deck (ideal for nitrous or blower applications). Standard valves are lightweight 8mm, 2.080 in. intakes 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. They also offer exceptional flow characteristics, a 23 degree valve angle, and standard valve spacing. These cylinder heads are perfect for 350 to 400 c.i.d. engines in bracket drag cars, sportsman oval trackers, and highly modified street-class cars operating between 3,000 and 7,500 rpm (higher rpm ranges are possible, depending on the combination of parts).
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$3,423.00
$2,259.60
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$3,279.15
You're track-ready with extreme performance GM LSX376 crate engines. At home on the street and on the strip, these value-driven Chevrolet Performance crate engines offer lower-compression forged aluminum pistons, a tough bottom end, and high-flow heads. LSX376 engines make a perfect foundation for supercharging, turbocharging, and nitrous--all you need to do is supply the boost! Does your muscle deserve the LSX touch? Yes! Get the strength and power to build a winner with these features: * Race-bred LSX Bowtie block * High-flow LS3 cylinder heads * Blower-friendly 9.0:1 forged pistons * 14 in. automatic transmission flexplate * Unique LSX376 valve covers
Not Yet Reviewed
$13,568.04
AFR 227cc SBC Eliminator Race Ready Racing heads offer outstanding track performance at a competitive price. Exhaust and intake ports and combustion chambers are 100 percent CNC-ported, with coarser machine levels for terrific flow characteristics and big power gains. The 227cc SBC Eliminator heads feature a 3/4 in. thick head deck, ideal for nitrous or blower applications. They come complete and ready-to-run with quality AFR-proven components for maximum reliability—or choose "bare" heads (no parts) to design your own ultimate power package. These cylinder heads are available in standard and spread port exhausts. AFR 227cc SBC Eliminator Race Ready racing heads are a great choice for budget-minded racers.
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$2,259.60
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$2,770.95
On Sale
If you need the world's finest high performance street/strip small block Ford heads, then check out AFR's 185cc emissions-legal Renegade Street cylinder heads (CARB E.O. #250-3). With lightweight 8mm, 2.020 in. intake valves and 1.600 in. exhaust valves, combustion chamber volumes of 58 or 72cc, and 68cc exhaust ports, AFR's 185cc Ford cylinder heads are designed for 302-351 c.i.d. engines operating from 1,500 to 6,500 rpm. A 3/4 in. thick head deck makes the AFR heads ideal for nitrous or blower applications. These heads will not accept rail rocker arms, and hardened push rods are required on models designed for stud mount rocker arms.
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$2,049.60
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$2,328.90
$1,947.50
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$2,212.55
On Sale
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.
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$2,837.10
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$3,143.70
$2,695.15
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$2,986.80
AFR 210cc SBC Eliminator racing heads are available in two stages of performance. The race-ready version features 100 percent CNC-ported intakes—and 100 percent CNC-ported intakes with greater detail. They come with 100 percent CNC-ported combustion chambers and 80cc exhaust ports with a 3/4 in. thick head deck (ideal for nitrous or blower applications). Standard valves are lightweight 8mm, 2.080 in. intakes 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, 23 degree valve angle, and standard valve spacing make these the perfect cylinder heads for 350 to 400 c.i.d. engines in bracket drag cars, sportsman oval trackers, and highly modified street-class cars operating between 3,000 and 7,500 rpm (higher rpm ranges are possible, depending on the combination of parts). The 210cc aluminum cylinder heads are available for either standard or spread port exhausts, bare or assembled style.
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$2,259.60
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$3,502.80
On Sale
For the ultimate small block Ford street car, consider AFR 165cc SBF Renegade 20 degree street heads. Unlike some aftermarket heads, AFR's Ford cylinder heads (CARB E.O. # D250-3) fit all of your stock components; no special parts are required! With lightweight 8mm, 1.900 in. intake valves and 1.600 in. exhaust valves, combustion chamber volumes of 58 and 60cc, and 68cc exhaust ports, these emissions-legal aluminum cylinder heads are perfect for 289 and 302 engines operating from idle to 6,000 rpm. A 3/4 in. thick head deck makes the heads ideal for nitrous or blower applications. Renegade cylinder heads will not accept rail rocker arms, and hardened pushrods are required on models designed for stud mount rocker arms.
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$2,328.90
$2,212.55
On Sale
If you're looking for the world's finest street/strip heads available, then AFR's 205cc Renegade Race cylinder heads are your answer. With lightweight 8mm 2.080 in. intake and 1.600 in. exhaust valves, these heads move tremendous volumes of air through conservative runner volumes, spelling big torque and horsepower numbers. AFR's trademark 3/4 in. thick head deck makes them ideal for heavy nitrous or blower applications. They even offer an available nitrous or blower exhaust port option featuring a 73cc ultra high-flowing exhaust port.
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$2,051.70
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$3,014.55
$1,949.40
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$2,864.25
On Sale
AFR 227cc SBC Eliminator Competition Racing heads are 100 percent CNC-ported, with finer machine levels and improved port-shaped details for optimum flow characteristics, giving you the power you need to win. The 227cc SBC Eliminator heads have a 3/4 in. thick head deck ideal for nitrous or blower applications. They come complete and ready-to-run with AFR power-proven components for ultimate power and reliability. Or choose "bare" heads (no parts) to design your own ultimate power package. These heads are available in standard and spread port exhausts. Bolt-on high performance with AFR 227cc SBC Eliminator Competition racing heads—you'll be the baddest thing on four wheels!
Not Yet Reviewed
$2,905.35
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$3,279.15
$2,759.75
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$3,115.05
On Sale
Recommended for aggressive street/strip builds with displacements up to 427 c.i. operating at or below 7200 rpm. Capable of flowing 328 cfm at 0.650 in. lift with a 4.000 in. bore size. AFR street legal 230cc LS1 Mongoose strip cylinder heads are specifically designed for Gen III Chevy Corvettes, Camaros, and trucks. LSX cylinder heads offer unmatched flow performance and feature 2.080 in. intake and 1.600 in. exhaust valves with their ductile iron interlocking valve seats. Mongoose strip heads are available with 62cc, 65cc, and 72cc combustion chambers. Structural features like AFR's trademark 3/4 in. thick head deck, a must for blown and nitrous applications, reinforced rocker stud bosses, and thick wall runners provide unparalleled durability. An exclusive new modern combination chamber design with a double quench pad area helps the LSX generate huge low and mid-lift airflow numbers.
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$2,910.60
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$3,332.70
$2,765.45
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$3,166.35
Eagle rotating assemblies can take a lot of worry out of your engine building project. Eagle's heavy-duty rotating assemblies consist of name-brand quality components for a wide range of engines at an affordable price. Perfect for the most extreme competition engines, including exotic fuels, heavy nitrous, and high boost, Eagle's HD rotating assemblies are equipped with Eagle's forged 4340 center-counterweighted crank (when available), forged H-Beam rods with ARP 2000 or L19 bolt upgrade and purpose-built heavy duty pistons. The pistons used in Eagle's heavy-duty assemblies are built for high boost levels or bucket-loads of nitrous. Every part is top-of-the-line and ready to support whatever you want to throw at it. Most all assemblies are available balanced or unbalanced if you'd rather your machine shop balance it. Along with crank, rods, pistons, every assembly includes bearings from either King or Clevite and rings suited to the intended application. Externally balanced assemblies balanced by Eagle will also include a harmonic damper and flexplate (or flywheel for some Fords) from Pioneer. Order the model designed for fitment on your year/make vehicle and engine application.
Not Yet Reviewed
$2,094.50
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$4,279.99
ATK High Performance Chevy Gen V LT1 416 short blocks are built for naturally aspirated engines, boost or nitrous. ATK starts with a new GM LT block and outfits it with a Manley 4340 forged crankshaft, H-beam rods with ARP2000 bolts, Manley 2618 forged pistons, and Total Seal CS AP ring package with steel top rings. These short blocks will have the factory piston squirters plugged. Engine Specifications: * Block: New GM LT1/LT4 * Bore/Stroke: 4.065 in. x 4.000 in. * Displacement (cu.in): 416 c.i.d. * Crankshaft: Manley 4340 forged 58-tooth reluctor wheel * Rods: Manley 4340 forged H-beam 6.125 in. ARP 2000 bolts * Pistons: Choice of 2618 forged +10cc or +20cc dished * Rings: Total Seal CS AP steel top ring with Napier 2nd ring set * Camshaft bearings: Installed and clocked to OEM position * Freeze plugs: Installed and sealed * Oil galley plugs: Installed and sealed Recommended components: * Balancer -- Internal balance * Flex plate / Flywheel -- Internal balance * Head gasket: .051 in. or per application * Oil pump: Factory Engine Info: * Oil: 5W30 non-synthetic for first 3,000 miles * Oil filter: Wix or K&N, per application
Not Yet Reviewed
$6,998.99
ATK High Performance Chevy Gen V LT1 376 short blocks are built for naturally aspirated engines, boost or nitrous. ATK starts with a new GM LT block and outfits it with a Manley 4340 forged crankshaft, H-beam rods with ARP2000 bolts, Manley 2618 forged pistons and Total Seal CS AP ring package with steel top rings. These short blocks will have the factory piston squirters installed. Engine Specifications: * Block: New GM LT1/LT4 * Bore/Stroke: 4.065 in. x 3.622 in. * Displacement (cu.in): 376 c.i.d. * Crankshaft: Manley 4340 forged 58-tooth reluctor wheel * Rods: Manley 4340 forged H-beam 6.125 in. ARP 2000 bolts * Pistons: Choice of 2618 forged +12cc dished or -2cc domed * Rings: Total Seal CS AP steel top ring with Napier 2nd ring set * Camshaft bearings: Installed and clocked to OEM position * Freeze plugs: Installed and sealed * Oil galley plugs: Installed and sealed Recommended Components: * Balancer -- Internal balance * Flex plate / Flywheel -- Internal balance * Head gasket: .051 in. or per application * Oil pump: Factory Engine Info: * Oil: 5W30 non-synthetic for first 3,000 miles * Oil filter: Wix or K&N, per application
Not Yet Reviewed
$6,998.99
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.
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$2,052.75
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$2,328.90
On Sale
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
$2,552.65
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$2,799.65
AFR 195cc SBC Eliminator competition heads are fully CNC-machined (combustion chamber, intake, and exhaust ports) and available in your choice of straight or angled plug versions. These heads feature a 75cc or 65cc combustion chamber with a 64cc exhaust port with competition porting 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 the AFR 195cc Eliminators, a 23 degree valve angle, and standard valve spacing make them the perfect competition 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 year/make and engine family.
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$2,776.20
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$3,166.80
BluePrint Engines GM BB compatible 496 c.i.d. Stroker long block base crate engines with forged components are built to accept power adders like turbochargers, superchargers, NOS, etc. They're built to deliver 561 hp and 512 lbs.-ft. of torque. The engines also include valve covers, an oil pan and timing cover. Compression ratio: 8.8:1 Engine specifications: --- BLOCK: * NEW BluePrint cast iron block * 4-bolt main * 4.500 in. bore * One-piece rear main seal * Mechanical fuel pump provision: Yes * Standard deck --- ROTATING ASSEMBLY: * New BluePrint forged crankshaft * 4.250 in. stroke * Forged H-beam 6.135 in. connecting rods * Forged pistons * Internal ---CYLINDER HEADS: * BluePrint aluminum cylinder heads * 119cc chamber * 2.30 in. intake / 1.88 in. exhaust valves * 316cc intake / 124cc exhaust runners * Cylinder heads feature a .300 in. raised exhaust port vs. an OEM casting * Must verify header/exhaust clearance ---CAM SPECS: * Cam type: Hydraulic roller * .540 Intake .560 exhaust * 242 intake / 248 exhaust duration * @ .050 - 114-degree lobe separation --- IGNITION TIMING: * 10-16 degrees and total timing 32-34 degrees ---NOTES: * Replaces BP49610CT * Built with dual keyway crankshaft for harmonic balancer * SFI harmonic balancer included on engine * Not for EGR * Must verify header/exhaust clearance
Not Yet Reviewed
$11,299.00
On Sale
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
$4,362.40
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$4,925.75
AFR 180cc LT1 Eliminator Street heads are emissions-legal (CARB E.O. #D-250-2 for engines up to 1994), and are available in the LT1 angle plug version only. These heads feature a 55cc 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, 2.020 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. Their flow characteristics, ideal operating range of idle to 6,000 rpm (higher rpm ranges are possible, depending on the combination of parts), 23 degree valve angle, and standard valve spacing make AFR 180cc LT1 Eliminator Street heads perfect for 350 to 383 c.i.d. engines. They are specifically designed for 1992-95 Corvettes and 1993-97 Camaros and Firebirds.
Not Yet Reviewed
$2,233.35
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$2,499.00
Brodix 11 STD X cylinder heads offer great flow, straight out of the box. They feature a very strong deck surface, allowing for the use of nitrous and blowers. Hardened valve seats are standard, allowing for use with unleaded fuels, and phosphorous valve guides ensure proper valve guide wear. Brodix recommends that these heads be installed on 400 cu. in. or larger engines. They require a special stud girdle and longer pushrods, and piston valve notches must be checked for clearance. A valve length of .150 in. longer than stock is required. Brodix 11 STD X heads are available in both bare and assembled styles.
Not Yet Reviewed
$3,992.99
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