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Holley EFI LS Hi-Ram Intake Manifold Bases 300-227BK
Part Number: HLY-300-227BK
Holley EFI LS Hi-Ram Intake Manifold Bases
Intake Manifolds, EFI, LS, Hi-Ram, Base Only, Cathedral Port, Multi-port, Standard Deck, Aluminum, Black Finish, Chevy, 4.8L, 5.3L, 5.7L, 6.0L, Each
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Estimated Ship Date: Oct 26, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
300-227BK
Part Type:
Product Line:
Summit Racing Part Number:
HLY-300-227BK
UPC:
090127029930
Cylinder Head Configuration:
Cathedral Port LS1/LS2/LS6
Fuel Injection Style:
Multi-port
Basic Operating RPM Range:
Idle-8,000
Intake Section Included:
Base only
Engine Block Deck Height:
Standard deck
Injectors Included:
No
Multi-Port Fuel Rails Included:
Yes
EGR:
No
Aftermarket Fuel Rail Required:
Yes
Throttle Body Included:
No
Supplemental Bosses Cast-In:
No
Supplemental Bosses Machined:
No
Runners Included:
Yes
Runners Removable:
No
Base Material:
Aluminum
Base Color:
Black powdercoated
Remanufactured:
No
Quantity:
Sold individually.
Notes:
Fuel rails are machined for -8 AN O-ring female fittings. Cathedral port heads only. Can use 92mm. or 102mm. throttle body with purchase of proper flange.
Holley EFI LS Hi-Ram Intake Manifold Bases
Holley EFI LS Hi-Ram intake manifold bases are cost-effective alternatives to fabricated sheet metal for high performance applications where induction system height is not limited. Coupling these cast aluminum Hi-Rams with the high flowing LS-style cylinder heads has outstanding potential for N/A and forced induction applications at a budget-minded cost. These modular lower manifolds accept a wide range of carbureted and EFI tops, making them attractive to builders and fabricators as the perfect foundations for custom induction systems. Fuel rails are included and machined for -8 AN O-ring fittings with passages large enough to accommodate high fuel flows and dampen pressure pulsations in the fuel system. The aggressive, bold, race-bred styling of Holley GM LS modular Hi-Ram lower manifolds will make bad intentions clear for drag race, muscle car, marine, off-road, sand rails, pulling trucks, track, and street-rod applications.
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Some parts are not legal for use in California or other states with similar laws / regulations
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