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300-208 | PLENUM TOP, LT1 HI-RAM BLANK FLANGEclose
Fits Holley Hi-Ram Manifolds Features:Modular Design w/ Removable TopA-B Height: 12.10” (w/ Carb Style Top - 2 x 4150 or 2 x 4500) – See DrawingHeight at Plenum Flange: 9.44”O-Ring Seals for Plenum TopBrandHolley EFIConstructionCastEmission Code4FinishSatinManifold TypeHi-RamProduct TypeManifoldRPM Power Band3500-8000+Type of ComponentManifold TopPart Number300-208..
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300-208BK | PLENUM TOP, LT1 HI-RAM BLANK FLNGE-BLACKclose
Fits Holley Hi-Ram Manifolds-Holley has launched new black ceramic coated plenum tops to match our Hi-Ram manifold bases! They are available in the dual 4150 throttle body pattern or in a full blank top so that you can design your our system. The plenum tops are constructed of cast aluminum.Features:Modular Design w/ Removable TopA-B Height: 12.10” (w/ Carb Style Top - 2 x 4150 or 2 x 4500) – See..
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300-211 | FAB FLANGE, LT1 HI-RAM PLENUMclose
This mounting flange allows the LS enthusiast to fabricate a custom manifold top to the Holley Hi-Ram lower manifolds.Features:Hi-Ram manifold lower to top mounting flange for customer topDurable Aluminum constructionBrandHolleyEmission Code4Product TypeManifoldType of ComponentMounting FlangePart Number300-211..
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300-224 | STUD KIT, LT1 HI-RAM IM MOUNTINGclose
LT1 Hi-Ram Intake Manifold Stud Kit, Cylinder Head to IntakeFeatures:Stud Kit – Cylinder Head to IntakeIncludes: Studs (Qty 10), Washers (Qty 10), Nuts (Qty 10)BrandHolley EFIEmission Code5EngineGM Gen V LT1Product TypeManifoldType of ComponentStud KitWarrantyLimited 90 DayPart Number300-2245This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controll..
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300-225 | STUD KIT, HI-RAM IM MOUNTINGclose
Stud Kit, Hi-Ram Intake Manifold MountingBrandHolley EFIEmission Code5Product TypeManifoldType of ComponentStud KitPart Number300-225..
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300-236 | MANIFOLD BASE, LT1 HI-RAM WITH PORT INJEclose
The new Holley EFI Hi-Ram intake provides the ultimate performance with the new GM direct injected Gen V 6.2L LT1 engine. The modular design of this manifold allows easy disassembly for custom porting, multiple tops, or custom induction systems. Each runner has a large radius where it meets the plenum, and optimized taper & cross-sectional area to perform in a wide variety of engine configuratio..
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300-237 | MANIFOLD BASE, LT1 HI-RAM NO PORT INJECTclose
The new Holley EFI Hi-Ram intake provides the ultimate performance with the new GM direct injected Gen V 6.2L LT1 engine. The modular design of this manifold allows easy disassembly for custom porting, multiple tops, or custom induction systems. Each runner has a large radius where it meets the plenum, and optimized taper & cross-sectional area to perform in a wide variety of engine configuratio..
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300-238 | PLENUM TOP, LT1 HI RAM 2 X 4500, 2 INCH close
Fits Holley Hi-Ram Intakes, Features:Modular Design w/ Removable TopA-B Height: 12.10” (w/ Carb Style Top - 2 x 4150 or 2 x 4500) – See DrawingHeight at Plenum Flange: 9.44”O-Ring Seals on Plenum TopBrandHolley EFIConstructionCastEmission Code4FinishSatinManifold TypeHi-RamProduct TypeManifoldRPM Power Band3500-8000+Type of ComponentManifold TopPart Number300-238..
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300-239 | PLENUM TOP, LT1 HI-RAM 2 X 4500, 2.25 BOclose
Fits Holley Hi-Ram ManifoldsFeatures:Modular Design w/ Removable TopA-B Height: 12.10” (w/ Carb Style Top - 2 x 4150 or 2 x 4500) – See DrawingHeight at Plenum Flange: 9.44”O-Ring Seals for Plenum TopBrandHolley EFIConstructionCastEmission Code4FinishSatinManifold TypeManifoldProduct TypeManifoldRPM Power Band3500-8000+Type of ComponentManifold TopPart Number300-239..
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300-240F | INTAKE ELBOW, FORD THROTTLE 4150 FLANGE close
This cast EFI intake elbow allows the use of Ford throttle bodies on any intake manifold w/ the 4150 mounting flange. Slotted mounting holes & dual throttle cable mounting bracket bosses allow the elbow & throttle body to be mounted forward, sideways, or rearward. Features (4) vacuum ports, MAP sensor port, machined / port matched to 4150 gasket, and 100° throttle body angle for extra hood clear..
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300-243 | MFLD KIT, FORD 351W HI-RAM, CARB BASEclose
The Hi-Ram manifold line has a new addition for the 351W Ford application. The runner length and tapered cross section design will perform well for a wide range of engine combinations. The engineering team also redesigned the water crossover passage to allow room for distributor phasing. Aggressive, bold, race–bred styling will make bad intentions clear for drag race, muscle car, marine, off–road,..
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300-243BK | MFLD KIT, FORD 351W HI-RAM, CARB BASEclose
The Hi-Ram manifold line has a new addition for the 351W Ford application. The runner length and tapered cross section design will perform well for a wide range of engine combinations. The engineering team also redesigned the water crossover passage to allow room for distributor phasing. Aggressive, bold, race–bred styling will make bad intentions clear for drag race, muscle car, marine, off–road,..
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300-244 | MFLD KIT, FORD 351W HI-RAM, EFI BASEclose
The EFI Hi-Ram manifold line has a new addition for the 351W Ford application. The runner length and tapered cross section design will perform well for a wide range of engine combinations. The engineering team also redesigned the water crossover passage to allow room for distributor phasing. Aggressive, bold, race–bred styling will make bad intentions clear for drag race, muscle car, marine, off–r..
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300-244BK | MFLD KIT, FORD 351W HI-RAM, EFI BASEclose
The EFI Hi-Ram manifold line has a new addition for the 351W Ford application. The runner length and tapered cross section design will perform well for a wide range of engine combinations. The engineering team also redesigned the water crossover passage to allow room for distributor phasing. Aggressive, bold, race–bred styling will make bad intentions clear for drag race, muscle car, marine, off–r..
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300-2500-2RQFT | Anti-Rever. Plate 2.125" Boreclose
Billet Aluminum Anti-Reversion Plate for 2500 style carburetors with 2.125" Bore. Red anodized, gaskets included. Helps reduce harmonics produced by intake manifolds and preserve carburetor signal. BrandQuick FuelColorRedEmission Code5MaterialAluminumModelQFX Split SeriesProduct TypeAnti Reversion PlatePart Number300-2500-2RQFT..
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300-251 | MAP SENSOR PORT COVERclose
This billet aluminum cover eliminates the MAP Sensor and works with most intake manifolds w/ the LS3 style MAP Sensor. Includes O-ring seal and mounting hardware.BrandHolley EFIEmission Code5Product TypeMAP SensorPart Number300-251..
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300-255 | INTAKE MNFLD CATHEDRAL SPLIT SGL-PLN EFIclose
The new Holley Single-Plane Race intake manifold were designed with performance in mind. They feature a race bred, two piece split feature that was previously only found on the most expensive race intakes. The manifold will fit GM LS Gen III engines with cathedral port heads and are intended for 4150 style square bore flanged carburetors or throttle body EFI. The LS Race single-plane intake manifo..
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300-255BK | INT MNFD CATHEDRAL SPLIT SGL-PLN EFI-BLAclose
The new Holley Single-Plane Race intake manifold were designed with performance in mind. They feature a race bred, two piece split feature that was previously only found on the most expensive race intakes. The manifold will fit GM LS Gen III engines with cathedral port heads and are intended for 4150 style square bore flanged carburetors or throttle body EFI. The LS Race single-plane intake manifo..
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300-256 | INTAKE MNFD CATHEDRAL SPLIT SGL-PLN CARBclose
The new Holley Single-Plane Race intake manifold were designed with performance in mind. They feature a race bred, two piece split feature that was previously only found on the most expensive race intakes. The manifold will fit GM LS Gen III engines with cathedral port heads and are intended for 4150 style square bore flanged carburetors or throttle body EFI. The LS Race single-plane intake manifo..
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300-4000QFT | Phenolic Carb Spacer 1/2"close
Designed for drag race applications only. Features include 1/2" open style phenolic spacer with longer mounting studs. BrandQuick FuelEmission Code5Flange Style4150MaterialPhenolicProduct TypeCarburetor SpacerThickness1/2"Part Number300-4000QFT..
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