Availability
By popular demand, Holley is expanding the draw-thru supercharger carburetor line to now include the 4150 XP Series. Like the existing HP line, these carbs are available in 600, 750, and 950 cfm flow rates—and standard polished with black accents. The feature-laden XPs include a contoured venturi inlet for balanced airflow, screw-in air bleeds for precision-tuning capabilities, high-flow billet metering blocks, billet base plate, and Dominator-style fuel bowls which allow plumbing from either side. Supercharger XP carburetors also have a unique capability that allows their power valves to reference the intake manifold vacuum below the supercharger. This enables the power valve to operate as it should, based off intake manifold vacuum. A power valve provides further enrichment to the main metering system under load (low vacuum) conditions. Holley XP carburetors are the standard for square bore race carburetors. Race-Ready out of the box! Order the model with options preferred for your vehicle. Product details: * Tumble polished shiny finish for good looks * Application-specific blower calibration * Contoured venturi inlet offers balanced airflow for increased horsepower * Screw-in air bleeds for precision-tuning capabilities * Dual accelerator pumps for additional fuel under initial acceleration * Dual feed fuel inlets for constant high-volume fuel delivery * 4-corner idle allows you to precisely control your idle system * Mechanical secondaries for perfect off-the-line launches * Boost referenced power valve for proper enrichment under acceleration * Throttle lever cut off for clearance on a sideways application * 100 percent wet-flow tested by Holley technicians to assure it arrives ready to run
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$1,099.95
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$1,299.95
Holley Sportsman Model 4500 Dominator carburetors feature the patent pending new Holley Gen 3 main body, which is 5/16 in. taller than the previous generation! This new height allows for larger radius air entries to deliver smoother flow—which equates to improved throttle response and consistency. An extended air cleaner flange is incorporated for easy air scoop attachment when using the available air scoop adapter. Other features include all-aluminum construction, tunable billet metering blocks, throttle position sensor mounting points, and knurled (hand adjustable) curb idle screws. Each calibration has been dyno and track tested to deliver proven performance! Key features of the Holley Sportsman Model 4500 Dominator carburetor: * All-aluminum construction saves 3.8 lbs. over original models * Shiny with billet aluminum metering block and black hardware * Designed for use on Drag racers, Pro Street, or any high-horsepower engines * Calibrations optimized for today's race engines and new fuels * Fully machined from venturi throat to throttle bore for predictable and repeatable performance * Annular boosters deliver excellent signal and throttle response * Screw-in air bleeds offer precise tuning capabilities * Metering blocks feature improved durability, true gasket sealing, and adjustability (power valve channel restrictors, intermediate restrictors, and idle feed restrictors) * Dual 50cc accelerator pumps provide the perfect amount of fuel from idle to full throttle * 4-corner idle allows you to precisely control your idle system * Clear sight windows on fuel inlet side of bowls for easy and safe fuel level adjustments * Notched float and jet extension are installed * 5/8-18 in. inlet threads offer a large variety of plumbing options (uses standard 4500 fuel inlet spacing) * Factory-ready TPS mounting points for use with data acquisition systems * Knurled primary and secondary curb idle screws allow for easy idle adjustment without the use of tools * Contoured hex head squirter screws for streamlined airflow * Progressive secondary link installed for perfect off-the-line launches; no linkage parts under the carburetor (1:1 wire link included in kit) * 100 percent wet-flow tested by Holley technicians to assure carb arrives ready to run * Compatible with the Gen 3 Dominator 4-hole billet spacer
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$1,249.95
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$1,299.95
Holley offers EFI Hi-Ram intake manifolds for a variety of applications, including many vehicles from the 1950s, '60s, '70s, and '80s with a Chevy small block Gen I engine. Fuel rail kits are provided and have mounting for both long and short type fuel injectors. These manifolds offer the performance potential and the appearance of professionally prepared billet and fabricated racing intake manifolds at the affordable price of a cast-aluminum product. They deliver 21st century performance for the iconic small-block Chevy engine. * Model 300-950 is of standard Hi-Ram configuration with a "top-feed" plenum and a plenum top designed to accept up to an 105mm Gen IV LS 4-bolt throttle body, including drive-by-wire throttle bodies. * Model 300-951 is a hood-height friendly Hi-Ram variation which has a "front-feed" plenum and a forward-facing throttle body flange which accepts an up to 95mm LS 4-bolt throttle body, also, including DBW throttle bodies. It's an upgrade replacement for the Holley/Weiand Stealth-Ram intake manifold which was a popular manifold used to significantly improve the performance of 1985-92 GM 5.7L TPI fuel-injected engines. The 300-951 system installs under the OE hood for Gen 1, 2, and 3 Camaros and Firebirds. It should be compatible with most applications with a mild cowl induction hood. * Uses drive-by-wire or cable-actuated GM Gen IV LS 4-bolt throttle bodies * Throttle cable bracket is supplied in the kit * GM Gen IV LS MAP sensor port. Also has provisions for (1) 1/8 NPT, (1) 1/4 NPT, (1) 3/8 NPT fittings to the plenum * Power band: 1,500-8,000 rpm * Black anodized EFI fuel rails are machined for -6 AN O-ring fittings and come included with these EFI Hi-Ram kits * Plenum top gasket type – 3/32 in. round O-ring cord * Cast 356-T6 aluminum construction, natural, satin as-cast aluminum finish * Requires the use of early type GM or small cap MSD or Holley distributors. Not compatible with HEI distributors * 1.95 in. tall x 1.25 in. wide port flange openings
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$1,049.95
On Sale
Holley LS Modular Lo-Ram EFI intake systems have a top-feed plenum entry configuration, designed to allow the currently available Hi-Ram 105mm plenum tops to be fitted to a low-profile base intake manifold. The short runner, low-profile base intake manifold intended for forced induction applications and was conceived to package with an air-to-water plenum-mounted intercooler—with a shorter overall height than is possible with other existing intake manifolds. Using a modular design, the top-feed plenum configuration with 105mm top keeps the overall height at just 9.07 in.! Additional features and specs include: * Cast aluminum construction * Modular design allows the use of the included top-feed plenum entry * Designed for GM LS Gen III and IV engines equipped with GM LS1/LS2/LS6 (cathedral port) cylinder heads * Will also work with OE or aftermarket cylinder heads * Designed for forced induction (supercharged or turbocharged) engine applications with peak power at 7,000 to 8,000 rpm, depending on application * Low height to aid the packaging of a plenum-mounted air-to-water intercooler in a top-feed configuration (or to fit under a stock or mildly modified hood in the front-feed configuration) * High-volume fuel rails and mounting hardware included with 3/4 in.-16 O-ring ports (8 AN) * Fuel rail kits come with two sets of brackets—a set for long (usually standard length) fuel injectors, and a set for short (such as Pico or LS7) fuel injectors
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$1,049.95
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$1,099.95
Holley offers Fox Body fuel system kits for a variety of applications, including many Ford Mustang models from the 1980s and '90s. These upgrades are designed as direct replacements for your factory fuel system—and include everything required: in-tank fuel pump module, billet fuel filters, fuel pressure regulator and gauge, fuel line, fittings, hardware, EFI-rated clamps, and all-new wiring components. They're designed to use factory fuel line routing and mounting locations for a clean, OEM-like installation. Additional details: * Choose from either a 90 or 139 GPH flowrate pump * Prepares your 1986-93 Ford Fox Body Mustang with a bulletproof fuel system for any engine application * Pump gas and E85 compatible fuel system * Includes 40 ft. of -6 AN or -8 AN nylon braided hose, enough to go from the tank to the engine for both feed and return * Electric fuel pump harness and relay wiring kit ensures the fuel pump receives the proper amperage for improved reliability and consistent performance
Not Yet Reviewed
$1,049.95
Holley Gen 3 Ultra Dominator carburetors feature a brand new main body, brand new state-of-the-art calibrations, high-volume HP fuel bowls, and sizes up to 1,475 cfm! The metering blocks are fully adjustable (emulsion bleeds, power valve channel restrictors, and idle feed restrictors). These carburetors include redesigned Holley HP fuel bowls for racing. Internal baffling helps to control fuel slosh and minimize float level fluctuations in hard launching or cornering situations. The HP fuel bowls also have material added in key areas (the needle and seat, fuel inlet, and sight window areas) for added strength in demanding race environments and can be plumbed from either side. Some of the many Holley Gen 3 Ultra Dominator carb features include: * Main body 5/16 in. taller than the previous generation * Designed for larger radius air entries optimized using computational fluid dynamics (CFD) software to deliver smoother flow into fully machined, big-bore Venturi * Improved 6061-T6 billet aluminum metering blocks offering improved durability, true gasket sealing (sealing surface integrity), and brightly dipped anodizing for good looks and corrosion protection * Power valve channel restrictors are now machined lower in the metering blocks for improved fuel delivery to the power valve circuit * Accelerator pump channel internally drilled, eliminating the need for an external plug, * Excess material removed for increased fuel capacity * Snap-in-place bowl vent whistle makes removal and/or replacement easier * 20 percent more fuel capacity vs. traditional V-bowl, eliminating fuel starvation and providing consistent air/fuel ratios * Fuel shelf is positioned below the needle and seat to minimize fuel aeration and promote more consistent metering * Fuel trough designed into the floor of the bowl to route fuel flow directly to the jets and assist in keeping them covered by fuel * Clear sight windows on both sides of the bowls for easy and safe fuel level adjustments * Built-in drain plug in the front center of the bowl provides easy access to empty the bowl (contoured entry provides smooth fuel flow directly to the needle and seat) * Designed for use on drag race, Pro Street, or any high-horsepower engines * All-aluminum construction saves 3.8 lbs. over original models (28 percent weight savings) * Dual 50cc accelerator pumps
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$1,499.95
If you are adding nitrous or boost to your 2010-2015 Camaro race car, Holley has the fuel pump upgrades for you, like these dual in-tank pumps. The fuel pump module design starts with a billet pump flange assembly and connects it to dual 340 or 450 LPH fuel pumps for maximum fuel delivery. The module also includes two HydraMats to eliminate fuel starvation under hard acceleration or cornering. The integrated jet pump assembly allows retention of factory drivers side fuel pickup. A new level sensor is included and pre-installed. Installation is as simple as removing factory module and replacing with Holley module. Select the dual in-tank pump model that's designed for your application. Features and benefits: * Machined, billet, anodized, laser-etch components for durability and good looks * -8AN ORB inlets and outlets (return fitting included) * Two HydraMats, one for each pump * Integrated jet pump assembly allows retention of factory drivers side fuel pickup * Have been tested to deliver stable fuel pressure down to low fuel indicator warning light * Brand new level sensor included and pre-installed to make installation as simple as removing factory module and replacing with Holley module * Outlet fitting included to connect to factory feed line * Secondary ORB port machined into flange for easy AN plumbing of feed line * Module is return-style only so a regulator must be installed
Not Yet Reviewed
$1,249.95
On Sale
Holley LS Modular Lo-Ram EFI intake manifolds are designed for GM LS Gen III and IV engines equipped with GM LS1/LS2/LS6 (cathedral port) cylinder heads. These intake manifolds will work with OE or aftermarket cylinder heads. The Lo-Ram intake manifolds are designed for forced induction (supercharged or turbocharged) engine applications and a 105 mm throttle or similar models. The base intake manifold is designed with a lower overall height to fit under a stock or mildly modified hood in the front-feed configuration. The modular design allows the use of front-feed plenum entry, while intake design facilitates custom inlet duct and throttle body placement. Additional features and specs: * Cast aluminum construction with satin silver finish * Modular design allows the use of front-feed plenum entry * Clears 4th Gen Camaro and C5 Corvette cowls and hoods without modification * With forced-induction and the short runner length the engine rpm at which peak power occurs is more likely to be coupled to the supercharger or turbocharger being used * High-volume fuel rails and mounting hardware included with 3/4 in.-16 O-ring ports (8 AN) * Fuel rail kits include two sets of brackets; a set for long (usually standard length) fuel injectors and a set for short (such as Pico, or LS7) fuel injectors
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$1,016.95
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$1,249.95
Holley modular Ultra Lo-Ram intake manifold kits feature a design custom-made for LS engines equipped with LS cathedral port cylinder heads, as well as OEM or aftermarket models. They provide an ideal solution for forced-induction (supercharged or turbocharged) engine applications and select throttle bodies—plus the base intake manifold features a lower overall height to fit under a stock or mildly modified hood. The included fuel rail kits come with two sets of brackets: a set for long (usually standard length) fuel injectors and a set for short (such as Pico or LS7) fuel injectors. The Holley LS modular Ultra Lo-Ram EFI intake manifolds best suited for your application also allow the use of front-feed plenum entry. More product features, items, and notes include: * Designed for forced-induction engine applications with peak power at 7,000 to 8,000 rpm (depending on the application) * Intake design facilitates custom inlet duct and throttle body placement * Allows design and fabrication of special throttle body adapters or inlet ducts for custom installations * Different finishes available for the best look to match your ride * Mounting hardware * With forced induction and the short runner length, the engine rpm at which peak power occurs is more likely to be coupled to the supercharger or turbocharger you use
Not Yet Reviewed
$1,049.95
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