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Holley | SKU:
300-228
Holley 300-228 Hi-Ram Lower Manifold - GM LS7
LS7 Carbureted Base Only
Regular price
$1,611.20 NZD
+ GST
Unit price
/
Unavailable
Shipping calculated at checkout.
Holley 300-228 Hi-Ram Lower Manifold - GM LS7 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.
Stock Status:
Holley 300-228 Hi-Ram Lower Manifold - GM LS7
Regular price
$1,611.20 NZD
+ GST
Unit price
/
Unavailable
Description
Description
LS7 Carbureted Base Only
Part Number: 300-228
• Runner length and the tapered cross-section designed to perform well for a wide range of engine configurations • 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. • Cast aluminum construction. • 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. • 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 Holley GM LS7 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 LS7 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!
Features and Benefits
• Mounting Flange Gasket Type – Standard LS3 Molded O-Ring
• Runner Length – 6.29”, As-Cast Runner Cross-Sectional Area – Tapered 4.67 in² to 2.84 in²
• Plenum Top Gasket Type – 3/32” Round O-ring Cord
• Port Size – 2.49” Height x 1.21” Wide
These parts should be used for the following applications: Racing/Performance/Street Rodder where hood restrictions are NOT a consideration.
Part Number: 300-228
• Runner length and the tapered cross-section designed to perform well for a wide range of engine configurations • 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. • Cast aluminum construction. • 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. • 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 Holley GM LS7 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 LS7 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!
Features and Benefits
• Mounting Flange Gasket Type – Standard LS3 Molded O-Ring
• Runner Length – 6.29”, As-Cast Runner Cross-Sectional Area – Tapered 4.67 in² to 2.84 in²
• Plenum Top Gasket Type – 3/32” Round O-ring Cord
• Port Size – 2.49” Height x 1.21” Wide
These parts should be used for the following applications: Racing/Performance/Street Rodder where hood restrictions are NOT a consideration.
Specifications
Specifications
-
Specifications
Basic Operating RPM Range 3500-8000 Brand Holley Carburetor Flange N/A Carburetor Quantity N/A Carburetor Studs Included No Category Engine CNC Ported No Color Natural Construction Cast Cylinder Head Port Shape Raised Rectangle Deck Height 9.24 EGR Port No Emission Code 4 Engine GM LS7 Flange Style N/A Fuel Injectors Included No Fuel Rail(s) Included No Fuel System Type Carb Gasket Or Seal Included No Grade Type Performance Intake Port Gasket(s) Included No Material Aluminum Nitrous Bung(s) Included No part type Engine Intake Manifold Plenum Finish Natural Product Type Intake Manifold Base Removable Runners No Removable Top/Lid Yes Single Or Dual Plane Type Single Plane Sub Category Cylinder Block Components Throttle Body Bore Diameter N/A Throttle Body Gasket Included No Throttle Body Included No Type of Component Lower Manifold Vacuum Ports Yes Warning California Proposition 65 Warranty Manufacturer's Limited 90 Day Warranty -
Instructions
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