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Performance Design XS intake manifolds break the mold of existing intake manifold architecture to maximize available space under the hood. When designing the optimum intake runner length and shape, the fuel rail gets in the way—so they moved it—inside the intake manifold! Those billet fuel rails feature an external quick-disconnect near the stock location. Testing proved these models, featuring injection-molded, glass-reinforced nylon construction, made horsepower and torque gains on a stock engine—with increasing gains as the engine got more aggressive with camshaft and exhaust upgrades! Other product features and specifications include: * Modular runners with three staggered lengths for best performance * Forward-facing throttle body flanges (90-101mm, 103mm, and 112mm) * Full assembly can be reversed on the engine * Fits under the cowl hood of a C6 Chevy Corvette * Factory MAP sensor location * PCV and canister purge solenoid OEM connections * Accepts standard EV6 LS3/LS7-style injectors * Injector extension wires pass through sealed grommets * Maximum recommended boost is 20 psi * Carbon fiber center bolt cover * Includes stainless steel hardware for installation * Includes molded port, plenum, and throttle seals
Not Yet Reviewed
$999.99
$899.99
Performance Design Carbon HR intake manifold lids offer owners of the Holley Ram intake models a lightweight. carbon fiber plenum upper. These top sections reduce weight, reduce heat soak, and add a unique engine aesthetic with the exposed weave cloth. Constructed from high-strength carbon fiber with high-temperature epoxy and bonded with high-temperature aerospace structural adhesive, each unit saves approximately 3 lbs. of mass versus the cast original lid. With a matching bolt pattern, the carbon plenum uppers will bolt to any existing Holley Hi-Ram, Mid-Ram, or Lo-Ram cast lowers. The throttle is moved up and rear-ward to improve the flow transition into the plenum and facilitate the carbon process. Order the model designed for your application needs. Other product features and specifications include: * Billet throttle body flange (90-105mm) * Plenum can be reversed on the Holley Ram lower * Carbon fiber-wrapped foam core plenum flange
Not Yet Reviewed
$899.99
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$949.99
Performance Design wet sump carbon fiber LS valve covers offer ultra-lightweight solid carbon fiber body construction, titanium fasteners, and a polymer injection molded seal flange. Thoughtful design provides features to retain the fasteners when the cover is turned over. The fully isolated design is also similar to production, so all OEM-style gasket/sealing and positive locators will match for easy installation. Available models include these wet sump-style with a -12 AN port and oil cap, dry sump-style without AN ports, and race-style with two -12 AN ports and two oil cap plugs. Each of these versions are available with black or red LS3/LS7-style compact coil brackets. An optional billet oil fill cap is also available separately. Build for performance without losing sight of aesthetics when you order the Performance Design wet sump carbon fiber LS valve covers best suited for your application. Other product features and items include: * Uses the same 2 x 2 6K weave as most of their intake manifolds to perfectly compliment any engine bay * Undercut inboard wall for rocker clearance (not intended for use with shaft-mounted rockers) * Injection molded gasket groove * Integrated PCV port * OEM-style gasket
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$849.99
Performance Design dry sump carbon fiber LS valve covers offer ultra-lightweight solid carbon fiber body construction, titanium fasteners, and a polymer injection molded seal flange. Thoughtful design provides features to retain the fasteners when the cover is turned over. The fully isolated design is also similar to production, so all OEM-style gasket/sealing and positive locators will match for easy installation. Available models include these dry sump-style without AN ports, wet sump-style with a -12 AN port and oil cap, and race-style with two -12 AN ports and two oil cap plugs. Each of these versions are available with black or red LS3/LS7-style compact coil brackets. An optional billet oil fill cap is also available separately. Build for performance without losing sight of aesthetics when you order the Performance Design dry sump carbon fiber LS valve covers best suited for your application. Other product features and items include: * Uses the same 2 x 2 6K weave as most of their intake manifolds to perfectly compliment any engine bay * Undercut inboard wall for rocker clearance (not intended for use with shaft-mounted rockers) * Injection molded gasket groove * Integrated PCV port * OEM-style gasket
Not Yet Reviewed
$799.99
Performance Design Carbon pTR intake manifold lids offer a replacement carbon fiber top for the Carbon pTR manifold, a custom project, or an upgrade. The plenum is constructed from high-strength carbon fiber with high-temperature epoxy for improved strength to weight ratio and reduced heat soak to the fresh air charge. The polymer lower runner pack resists heat soak from the heads and houses all ports/sensors hidden in the valley. The combination of materials offers a 10 lb. weight savings over competitive aluminum tunnel ram manifolds. Select the pTR lid needed for your application. Specifications and features: * Carbon fiber plenum with five layers of carbon and foam core flange * Tested to over 50 psi of boost * Includes stainless steel hardware for installation * Anodized billet throttle flange available in red or black
Not Yet Reviewed
$899.99
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$1,039.99
Performance Design race style carbon fiber LS valve covers offer ultra-lightweight solid carbon fiber body construction, titanium fasteners, and a polymer injection molded seal flange. Thoughtful design provides features to retain the fasteners when the cover is turned over. The fully isolated design is also similar to production, so all OEM-style gasket/sealing and positive locators will match for easy installation. Available models include these race-style with two -12 AN ports and two oil cap plugs, dry sump-style without AN ports, and wet sump-style with a -12 AN port and oil cap. Each of these versions are available with black or red LS3/LS7-style compact coil brackets. An optional billet oil fill cap is also available separately. Build for performance without losing sight of aesthetics when you order the Performance Design race style carbon fiber LS valve covers best suited for your application. Other product features and items include: * Uses the same 2 x 2 6K weave as most of their intake manifolds to perfectly compliment any engine bay * Undercut inboard wall for rocker clearance (not intended for use with shaft-mounted rockers) * Injection molded gasket groove * Integrated PCV port * OEM-style gasket
Not Yet Reviewed
$899.99
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