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PROMAXX Performance designed and developed these cylinder heads from the GM 6.5 diesel casting. They are cast iron direct bolt-on replacements for your 6.5L diesel engine. The assembled heads have straight intake bolt holes in the cylinder head, and will typically use a one-piece intake manifold. Order the model recommended for your Chevy or GMC truck.
( 8 )
$538.00
Edelbrock Performer RPM aluminum cylinder heads feature threaded inserts in the rocker studs and exhaust manifold bolt holes for superior strength and durability. They also include hardened seats, bronze valve guides, and fully machined valve cover rails for a more consistent gasket seal. These heads offer improved power throughout the RPM range for greater throttle response and top-end horsepower. Countless options are available; order the model recommended for your vehicle and engine application.
( 164 )
$701.50
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$780.50
Victor and Victor Jr. Series aluminum heads are designed using the latest induction technology for outstanding performance and maximum horsepower. They're ideal for the small block Ford Windsor, and small and big block Chevys. Victor Jr. Series heads are perfect for many types of competition and ultra-high performance street machines. They include threaded inserts (heli-coil) in rocker stud and exhaust manifold bolt holes. They have hardened seats and bronze valve guides for strength and durability, and a minimum 9/16 in. deck thickness and machined valve cover rails provide a more consistent gasket seal. Victor Series heads are a step above the rest, for even greater gains in horsepower. All of these heads feature reinforced rocker stud bosses, high-flow intake/exhaust ports, and specially contoured combustion chambers.
( 2 )
$782.50
FLOTEK 185cc Small Block Ford Thumper cylinders heads feature a raised "floor" and "roof" design. Why you ask? This allows a better approach to the valve when attempting to achieve high performance and to keep air and fuel attached to short turn radius for increased torque over a wider rpm range without sacrificing high-rpm power. Coupled with the new chamber design for better wet flow quality and a "W" design exhaust port to keep flow attached to the port floor which greatly increases exhaust gas evacuation verses original 180cc design. Always thinking of the racer, the FLOTEK Thumper 180 accepts stock manifold!
( 4 )
$539.00
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