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Designed for 396-502 c.i.d. big block Chevy engines, these Edelbrock cylinder heads include heavy-duty exhaust valves that provide the added durability needed for marine applications, and have one-piece, stainless steel intake valves with hardened tips and swirl-polished heads. The high-velocity flow capabilities of Edelbrock Performer RPM cylinder heads provide increased torque across a wide rpm range that's ideal for marine use. They're cast from A356 aluminum and heat-treated to T6 specs. Their oval-port heads have 110cc chambers and their rectangular port heads have 118cc chambers. Both the oval and rectangular port heads are hard-anodized to protect the aluminum in the harsh marine environments.
( 2 )
$1,780.50
$1,602.45
Brodix Cylinder Heads Race-Rite oval port cylinder heads for big block Chevys bolt on directly in place of your stock heads, so you can reuse your intake manifold and pistons. Because the stock exhaust ports are in the stock location, you don't have to worry about header or manifold interference. These aluminum heads are great for street and strip applications. They feature 119cc combustion chambers, air conditioner bracket holes, solid phosphorous bronze guides, high-torque 270cc intake ports, a fully machined valve cover rail, and bulletproof rocker stands.
( 24 )
$1,634.99
Trick Flow® PowerPort® 325 cylinder heads for Ford 429/460 engines deliver significant horsepower and torque gains over other similar-style cylinder heads. Notable features include an extremely efficient chamber design for more complete combustion and exhaust ports raised .270 in. from stock for increased airflow. Trick Flow® PowerPort® 325 heads also feature Trick Flow's® CNC Competition Ported runners and CNC-profiled combustion chambers. These premium high-resolution surface finishes are perfect for building maximum performance. Trick Flow® PowerPort® 325 cylinder heads are available fully assembled or as bare castings. Sold individually.
( 5 )
$1,849.99
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$1,999.99
PPE's CNC-ported LLY/LBZ/LMM cast iron cylinder heads are the ultimate upgrade to your Duramax engine to eliminate any head gasket or cracking concerns. Cast from high-quality alloyed gray iron, the PPE cylinder heads offer elevated fatigue strength, heat, and creep resistance, which prolongs the cylinder head's lifespan significantly. The cylinder heads also share the same heat expansion rate as the stock cast-iron cylinder block—no more blown head gaskets! PPE's CNC-porting process improves airflow, enhancing power, fuel efficiency, and throttle response while reducing engine stress and turbo lag. By smoothing the ports and maintaining wall thickness, these heads provide increased horsepower and torque without sacrificing reliability. Tailored to each specific head, the CNC machining compensates for casting variations, ensuring consistent and optimized airflow dynamics. Whether you have a damaged aluminum cylinder head or a desire for better reliability and longevity on your Duramax engine, cast iron cylinder heads from Pacific Performance Engineering are undoubtedly the best choice. Product features: * Specially alloyed gray cast iron liquid-cooled cylinder head * 5-Axis CNC-ported intake and exhaust ports for smooth, unrestricted airflow * Increased thermal efficiency compared to aluminum heads * Reduced noise and vibration, better ride * Eliminates head gasket scrubbing issue (blown head gasket) * Higher fatigue strength and heat resistance * Premium 21-4N, Stellite-reinforced exhaust valves * Fully nitridated valves, better abrasion resistance * Ready to install—comes with all valvetrain components, rocker arm dowels, and freeze plugs * Requires the use of LBZ/LMM glow plugs on LLY engines (sold separately) Important Notes: The valve seats of the PPE heavy cast iron cylinder heads are installed with an interference that maximizes the durability and lifespan of the cylinder heads. Such interference might not be optimal for extreme-performance applications where a significant amount of heat is created. For those applications, PPE suggests that the exhaust valve seats be replaced with higher interference (+0.006 in. to +0.008 in.) oversized exhaust valve seats (Nominal size 34mm).
Not Yet Reviewed
$1,709.99
Trick Flow PowerPort® 290 cylinder heads for Ford 429/460 engines deliver significant horsepower and torque gains over similar-style cylinder heads. The heads have Fast As Cast® runners that duplicate the port shape and profile of CNC-ported heads for near-CNC-ported power and performance for about the same price as regular cast cylinder heads. Other features include an extremely efficient chamber design for more complete combustion and exhaust ports raised .270" from stock for increased airflow, Trick Flow PowerPort 290 cylinder heads are available fully assembled or as bare castings. Sold individually.
Not Yet Reviewed
$1,549.99
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$1,599.99
On Sale
Are you looking for a set of entry-level street performance heads for your modern street rod, muscle car, or truck? Edelbrock E-Street cylinder heads are just the ticket. These heads feature A356 aluminum castings that are heat-treated to T-6 specs for superior casting strength and quality. Their modern combustion chamber design helps to improve the combustion process and their larger-than-stock intake and exhaust ports help to move more air through your engine. These features improve an engine's efficiency, resulting in more horsepower and torque and improved mileage potential. All Edelbrock E-Street cylinder heads are assembled with manganese bronze valve guides, powder metal interlocking valve seats, and stainless steel one-piece valves with hardened valve tips. Edelbrock E-Street cylinder heads are ideal for entry level street performance engines.
( 119 )
$1,702.95
$1,500.75
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$1,791.95
Chevrolet Performance Bowtie aluminum cylinder heads offer an ideal combination of street drivability and drag-strip performance. These aluminum cylinder heads provide a broad power range with ample low-end torque, along with excellent throttle response, good mid-range torque and enough top-end power to beat your competitors to the finish line. Designed for high performance applications, the Bowtie Street cylinder heads are manufactured to precise machining tolerances, with thick deck surfaces and high-velocity airflow passages. They are available in either rectangular or oval intake port configurations. The rectangular intake ports are larger in volume and have been designed to enhance high-rpm horsepower, which makes them best for vehicles that see frequent drag-strip action. Cylinder heads with oval intake ports are smaller in volume and designed for greater low-rpm torque, therefore they're best for street applications, where lots of bottom end, off-the-line power is desired. Bowtie Street Cylinder Head Technical Notes: * Made from 356-T6 aluminum * Available in rectangular or oval-port designs * Will work on Mark IV and Gen V, VI blocks * 9/16 in. thick decks * As-cast intake and exhaust ports * No heat risers * 1.55 in. valve spring seat diameter * Heli-coiled 7/16 in. screw-in rocker stud holes * Designed for use with 3/8 in. pushrods * Use intake gasket P/N 12366985 and bolt kit P/N 12367959 * Use head gasket P/N 12363414 for bores to 4.370 in. and P/N 12363413 for bores 4.470 in. to 4.540 in. (Mark IV) * Use head gasket P/N 12363412 for bores to 4.370 in. and P/N 12363411 for bores 4.470 in. to 4.540 in. (Gen V, VI) * Use head bolt kit P/N 12367779 Bowtie Oval-Port Aluminum Cylinder Head Assembly: * Completely assembled with 2.250 in./1.880 in. 11/32 in. stem valves * 290cc oval intake ports * 110cc exhaust ports * 110cc combustion chambers Cylinder head is assembled with the following components: * 2.190 in. intake valves * Valve spring retainers * 1.880 in. exhaust valves * Valve locks * Valve springs * Valve seals * Valve spring shims * Rocker arm studs * Pushrod guideplates
Not Yet Reviewed
$1,685.52
If you're looking for more horsepower and torque for your engine, Chevrolet Performance Vortec top end kits may be just the ticket! These kits are available for a variety of engines, and each kit is comprised of all the pieces and part components you need to get the job done. Order the Chevrolet Performance Vortec top end kit recommended to fit your engine model.
Not Yet Reviewed
$1,790.68
Maximum quality, maximum performance, and minimum pricing--PROMAXX Maxx Series small block Mopar cylinder heads take affordable power to the next level. With ultra-smooth Grade A 356-T6 aluminum castings that are precision CNC-machined, these small block Mopar heads deliver awesome air speeds with super-efficient chamber designs to produce the power and torque you need for the street or strip. Maxx cylinder heads feature 5-angle competition valve jobs, diamond-honed bronze guides, and hand bowl blending. Get out-of-the-box performance that kicks up the power without emptying your wallet--PROMAXX Maxx Series small block Mopar cylinder heads.
Not Yet Reviewed
$1,964.00
World Products Merlin cylinder heads for big Chevys combine large intake runners with open combustion chambers to produce good torque and low-end power. The heads are available assembled or bare; rectangular or oval; with or without intake/exhaust valves; and other options. Order the model that best suits your application.
( 7 )
$1,840.28
Manufactured by ARP, Edelbrock head bolt kits contain a complete set of the highest quality head bolts and hardened washers available. They are cold-formed to ensure molecular integrity and heat-treated prior to thread rolling and machining. Reduced-diameter bolt heads eliminate the need for valvetrain removal to facilitate cylinder head re-torquing. Hardened and parallel-ground washers are included, and they're rated at 170,000 psi.
Not Yet Reviewed
$1,971.95
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