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Holley 300-228 Hi-Ram Lower Manifold LS7 Carb

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#425300228

Holley 300-228 Hi-Ram Lower Manifold LS7 Carb

Name: Holley 300-228 Hi-Ram Lower Manifold LS7 Carb
Brand: Holley
SKU: 425300228
Price: 849.95 USD
Availability: InStock

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Product Summary

Carbureted Fuel System Type, Multi-port Injection Style

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Key Specs

MFG. Part #	300-228
Brand	Holley
Injection Style	Multi-port
Intake Manifold Type	Tunnel Ram
Material Type	Aluminum

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Holley 300-228 Details

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! 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. Runner length and the tapered cross-section designed to perform well for a wide range of engine configurations 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. 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.

Port Size - 2.49 Height x 1.21 Wide
Mounting Flange Gasket Type - Standard LS3 Molded O-Ring
Plenum Top Gasket Type - 3/32 Round O-ring Cord
Runner Length - 6.29 , As-Cast Runner Cross-Sectional Area - Tapered 4.67 in² to 2.84 in²
Use with Carbureted Upper Manifolds

Installation Instructions (PDF)

Guides & Documents

Intake Manifolds Installation Instructions (425300228)

CARB Warning

For race/ off road use only

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

WARNING:

Cancer and Reproductive Harm – www.P65Warnings.ca.gov

CARB warning

Holley 300-228 Specifications

KEY SPECS
MFG. Part #	300-228
Brand	Holley
Injection Style	Multi-port
Intake Manifold Type	Tunnel Ram
Material Type	Aluminum

GENERAL
Fuel System Type	Carbureted
Finish	Natural
EGR	No
Cylinder Head Configuration	Raised Rectangular Port LS7
Intake Section Included	Base Only
Fuel Rails Included	Yes
Sold in Quantity	Each
GTIN Code	090127681732

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