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Holley EFIPart 300-123bkMade in US
Product Details
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Vehicle Fitment & Compatibility
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Years
Make / Model
Submodel
Engine
1900
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Key Features
*** 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.
• 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 | • 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. | • 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.
LS1/LS2/LS6 Cathedral Port EFI fits 1 x 105MM Throttle Body - Black Ceramic Coating
- 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)
- Total Height with 92/105mm EFI Plenum Top – 12.32” to the lifter valley cover flange on engine block.
- Port Size – 2.49” Height x 1.21” Wide
- Runner Length – 6.58”, As-Cast Runner Cross-Sectional Area – Tapered 4.25 in² to 2.53 in²
- Plenum Top Gasket Type – 3/32” Round O-ring Cord
- Base Plenum Top Mounting Flange Height – 8.42” to the lifter valley cover flange on engine block.
- Mounting Flange Gasket Type – Standard LS3 Molded O-Ring
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About this product
LS1/LS2/LS6 Cathedral Port EFI fits 1 x 105MM Throttle Body - Black Ceramic Coating
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Product Specifications
Automotive Item Grade
Performance
Basic Operating RPM Range
3500-8000
Basic Operating RPM Range
3500-8000 RPM
Brand
Holley EFI
California Proposition 65 Chemical Name
1
California Proposition 65 Required
Yes
Carburetor Flange
N/A
Carburetor Quantity
N/A
Carburetor Studs Included
N/A
Category
Engine
CNC Ported
No
Color
Black
Construction
Cast
Country
US
Cylinder Head Port Shape
Cathedral
Deck Height
9.24
EGR Port
No
Emission Code
3
Emission Code
4
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
HTS Code
8409918000
Intake Port Gasket(s) Included
No
Manifold Type
Hi-Ram
Material
Aluminum
Nitrous Bung(s) Included
No
Part Type
Engine Intake Manifold
Plenum Finish
Black
Product Type
Intake Manifold
Prop 65 Yes/No
Yes
Rear Maximum Height
11
Recommended Use
Forced Induction
Removable Runners
No
Removable Top/Lid
Yes
RPM Power Band
3500-8000 RPM
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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Warranty & Compliance
Warranty
Manufacturer's Limited 90 Day Warranty
Country of Origin
US
⚠ Prop 65 Warning
Yes
1
Emissions Code
4
HS Code
8409918000
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Dimensions & Shipping
Product Dimensions
26.7 × 15.9 × 14.2 in
Shipping Dimensions
26.7 × 15.9 × 14.2 in
Weight
17645 g (17.65 kg)