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Holley EFI | SKU:
300-123
Holley 300-123 LS Hi-Ram EFI Manifold GM LS1/LS2/LS6
LS1/LS2/LS6 Cathedral Port EFI for 1 x 105MM Throttle Body
Regular price
$2,588.70 NZD
+ GST
Unit price
/
Unavailable
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Holley 300-123 LS Hi-Ram EFI Manifold GM LS1/LS2/LS6 is not in stock at Fast Lane Spares and will ship direct from supplier
⚠ Special Order Item — ships direct from supplier. No returns, exchanges, or cancellations once processed. Please allow 7–20 days shipping.
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Description
Description
LS1/LS2/LS6 Cathedral Port EFI for 1 x 105MM Throttle Body
Part Number: 300-123
• EFI fuel rails are machined for -8AN O-ring Fittings with passages large enough to accommodate high fuel flows and dampen pressure pulsations in the fuel system and come standard with EFI Hi-Ram kits. • The base is designed to be modular in configuration to accept a wide range of carbureted and EFI tops and to be attractive to builders and fabricators as the foundation for custom induction systems. • Intended for use on N/A or forced induction engines in the 6.0 to 7.0+ liter range, max power at 7000-8000+RPM. The Holley GM LS1/LS2/LS6 Modular Hi-Ram Intake Manifold is introduced as a cost effective alternative to fabricated sheet-metal for high-performance applications where induction system height is not limited. Coupling this Hi-Ram intake with the high flowing LS1/LS2/LS6 style cylinder heads has outstanding potential for N/A and forced induction applications at a budget-minded cost. Aggressive, bold, race-bred styling will make bad intentions clear for drag race, muscle car, marine, off-road, sandrails, pulling trucks, track, street-rod applications and more! • Cast aluminum construction. • Runner length and the tapered cross-section designed to perform well for a wide range of engine configurations
Features and Benefits
• Throttle Body Flange Location, with 102mm EFI Plenum Top : Height – 8.42” (from engine block lifter valley cover flange), Longitudinal Location – 3.84” (forward from engine block front flange), Angle – 25 deg. (down from vertical)
• Mounting Flange Gasket Type – Standard LS3 Molded O-Ring
• Total Height with 92/105mm EFI Plenum Top – 12.32” to the lifter valley cover flange on engine block.
• Base Plenum Top Mounting Flange Height – 8.42” to the lifter valley cover flange on engine block.
• Port Size – 2.49” Height x 1.21” Wide
• Plenum Top Gasket Type – 3/32” Round O-ring Cord
• Runner Length – 6.58”, As-Cast Runner Cross-Sectional Area – Tapered 4.25 in² to 2.53 in²
*** The front and rear height measurements listed in the Specs section are referencing the overall height with the top plate installed. Please see the diagrams in the product images for other dimensions.
Part Number: 300-123
• EFI fuel rails are machined for -8AN O-ring Fittings with passages large enough to accommodate high fuel flows and dampen pressure pulsations in the fuel system and come standard with EFI Hi-Ram kits. • The base is designed to be modular in configuration to accept a wide range of carbureted and EFI tops and to be attractive to builders and fabricators as the foundation for custom induction systems. • Intended for use on N/A or forced induction engines in the 6.0 to 7.0+ liter range, max power at 7000-8000+RPM. The Holley GM LS1/LS2/LS6 Modular Hi-Ram Intake Manifold is introduced as a cost effective alternative to fabricated sheet-metal for high-performance applications where induction system height is not limited. Coupling this Hi-Ram intake with the high flowing LS1/LS2/LS6 style cylinder heads has outstanding potential for N/A and forced induction applications at a budget-minded cost. Aggressive, bold, race-bred styling will make bad intentions clear for drag race, muscle car, marine, off-road, sandrails, pulling trucks, track, street-rod applications and more! • Cast aluminum construction. • Runner length and the tapered cross-section designed to perform well for a wide range of engine configurations
Features and Benefits
• Throttle Body Flange Location, with 102mm EFI Plenum Top : Height – 8.42” (from engine block lifter valley cover flange), Longitudinal Location – 3.84” (forward from engine block front flange), Angle – 25 deg. (down from vertical)
• Mounting Flange Gasket Type – Standard LS3 Molded O-Ring
• Total Height with 92/105mm EFI Plenum Top – 12.32” to the lifter valley cover flange on engine block.
• Base Plenum Top Mounting Flange Height – 8.42” to the lifter valley cover flange on engine block.
• Port Size – 2.49” Height x 1.21” Wide
• Plenum Top Gasket Type – 3/32” Round O-ring Cord
• Runner Length – 6.58”, As-Cast Runner Cross-Sectional Area – Tapered 4.25 in² to 2.53 in²
*** The front and rear height measurements listed in the Specs section are referencing the overall height with the top plate installed. Please see the diagrams in the product images for other dimensions.
Specifications
Specifications
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Specifications
Basic Operating RPM Range 3500-8000 Brand Holley EFI Carburetor Flange N/A Carburetor Quantity N/A Carburetor Studs Included N/A Category Engine CNC Ported No Color Natural Construction Cast Cylinder Head Port Shape Cathedral Deck Height 9.24 EGR Port No Emission Code 4 Engine GM LS1/LS2/LS6 Flange Style EFI Front Maximum Height 12.32 Fuel Injectors Included No Fuel Rail(s) Included Yes Fuel System Type EFI Gasket Or Seal Included Yes Grade Type Performance Intake Port Gasket(s) Included No Manifold Type Hi-Ram Material Aluminum Nitrous Bung(s) Included No part type Engine Intake Manifold Plenum Finish Natural Product Type Intake Manifold Rear Maximum Height 11 Recommended Use Forced Induction Removable Runners No Removable Top/Lid Yes Single Or Dual Plane Type Single Plane Sub Category Cylinder Block Components Throttle Body Bore Diameter 105 MM Throttle Body Gasket Included Yes Throttle Body Included No Vacuum Ports Yes Warning California Proposition 65 Warranty Manufacturer's Limited 90 Day Warranty -
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