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Inspired by Dart's championship winning Pro Stock designs, Dart Pro 1 aluminum cylinder heads cover a wide range of applications from street cars and trucks to all-out racing. Heads designed for street performance and mild bracket racing offer excellent mid-range torque and power, and are excellent for heavier vehicles. Competition heads are ideal for maximum effort naturally aspirated, big boost forced induction, or nitrous applications. Dart Marine Pro 1 cylinder heads feature an exclusive chromate surface finish to inhibit corrosion and extend the life of the head. They are also fitted with Inconel exhaust valves to withstand the extended running time and temperatures typical of marine usage. Dart's as-cast ports flow more than many ported designs at a much more affordable price. But they also offer fully CNC-machined heads with every intake port, exhaust runner, valve bowl, and combustion chamber shaped by their 5-axis, computer controlled machining centers to produce compound curves and complex shapes that no human could duplicate with a hand grinder. Available bare or fully assembled, long-wearing bronze valve guides, screw-in studs, multi-angle intake seats with hardened, radiused exhaust seats are standard on most heads. Assemblies typically include stainless steel valves, premium springs, locks, retainers, guide plates, and seals. Many Pro 1 heads include race-proven features such as improved spark plug location, extra-long intake valves, raised exhaust ports, and fast burn chambers. They are offered an extensive variety of valve angles, intake port volumes and shapes, exhaust port locations, valve sizes, and chamber volumes.
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$1,121.94
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$1,558.34
An engine's cylinder heads and intake manifold must work together as an integrated system to produce maximum performance. The intake charge should make a seamless transition from the manifold runners to the cylinder head ports. Dart has optimized the port shape, the plenum volumes, and the runner angle for each application. These aluminum LS intake manifolds are offered in a variety of configurations, with raw, CNC, or injection ports. The single-plane units are designed for 4-barrel square bore carburetor mounting. Order the style preferred for your LS application.
Not Yet Reviewed
$1,146.55
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$1,541.68
Dart Pro1 aluminum cylinder heads for GM LS Series small block V8 engines take performance to the next level. They're available bare or assembled, in both cathedral port and square port designs, for applications ranging from street cars and trucks to all-out racing vehicles. Pro1 LS high performance cylinder heads have better airflow, more efficient combustion chambers, and more user-friendly features than production LS castings. Offered in a variety of valve sizes and port volumes with manganese bronze valve guides, they include multi-angle intake seats and radiused exhaust seats to enhance airflow. All Dart Pro1 LS cylinder heads retain stock valve angles, stock valve locations, and stock accessory mounting holes to make installation easy. Virtually everything else has improved!
Not Yet Reviewed
$1,149.49
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$1,614.99
Dart Race Series 18 degree cylinder heads (for small block Chevy) delivers features that put you ahead of the competition! Dart refined the rolled valve angle design to give you more versatility, more performance, more reliability and higher quality. Features include: * Premium alloy: Dart aluminum heads are cast from virgin 355-T61 aerospace alloy for superior strength and integrity * Shallow combustion chamber design to improve combustion and allow the use of larger valves for improved airflow * Refined intake port design reduces turbulence and improves air/fuel flow * 67cc as-cast chamber volume can be machined down to 48cc * Interlocking ductile iron valve seats are compatible with stainless steel or titanium valves * Valve seats will accommodate up to 2.180 in. intake and 1.625 in. exhaust valves * Extra thick decks for 9:1 engines can be milled for high compression engines * Integral bosses can be drilled for fuel injection down nozzles * Intake runners can be ported to CNC ported to 250cc
Not Yet Reviewed
$1,634.35
Dart Big Chief Box Ram intake manifolds are like custom-made without the time or expense. These castings incorporate Dart's Big Chief radical spread port design for phenomenal airflow, an optimized runner cross-section area to maintain high-mixture velocity for maximum power, and carburetor pads specifically designed for 4150 and 4500 carburetors. The manifolds' individual runners provide a line-of-sight path from carburetor to ports, and bosses for rear coolant lines are provided, as well as dual-distributor hold-downs to help simplify your timing adjustments. For all of the benefits without the hassle, top your engine with Dart Big Chief box ram intake manifolds.
Not Yet Reviewed
$1,362.62
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