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Holley EFIPart 300-621bkMade in CN
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
Lo-Ram Base Intake Manifold Plenum Top Mounting Flange Height - 5.17" Front Feed Plenum Configuration w/105mm Throttle Body Adapter - 6.86"
The 300-621 Ultra Lo-Ram front-feed plenum entry was configured to provide a very low profile modular intake manifold suitable for turbocharged or centrifugally supercharged engines. | The fuel rail kits come with two sets of brackets. A set for long (usually standard length) fuel injectors and a set for short (such as Pico, or LS7) fuel injectors. | The Holley LS1/2/6 Ultra Lo-Ram intake manifold kits are designed for GM LS Gen III and IV engines equipped with GM LS1/2/6 (cathedral port) cylinder heads. These intake manifolds will work with OE or aftermarket cylinder heads. The Ultra Lo-Ram intake manifolds are designed for forced induction (supercharged or turbocharged) engine applications and the 105 mm throttle body part number 112-581 or similar models. The base intake manifold is designed with a lower overall height to fit under a stock or mildly modified hood.
Ultra Lo-Ram Manifold Kit - LS1/2/6-Black Finish
- Intake design facilitates custom inlet duct and throttle body placement
- Clears 4th Gen Camaro and C5 Corvette cowls and hoods without modification
- Designed for GM LS Gen III and IV engines equipped with GM LS1/2/6 (cathedral port) cylinder heads
- Designed for forced induction (supercharged or turbocharged) engine applications with peak power at 7000-8000 rpm depending on the application.
- Low height to fit under a stock or mildly modified hood.
- With forced-induction and the short runner length the engine rpm at which peak power occurs is more likely to be coupled to the supercharger or turbocharger being used
- Front entry plenum flange allows design & fabrication of special throttle body adapters or inlet ducts for custom installations
- High volume fuel rails and mounting hardware included with ¾”-16 o-ring ports (8 AN)
- Modular design allowing the use of front-feed plenum entry
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About this product
Ultra Lo-Ram Manifold Kit - LS1/2/6-Black Finish
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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
4
Carburetor Flange
N/A
Carburetor Quantity
N/A
Carburetor Studs Included
N/A
Category
Intake Manifolds
CNC Ported
No
Color
Black
Construction
Cast
Country
CN
Cylinder Head Port Shape
Cathedral
Deck Height
9.24
EGR Port
No
Emission Code
3
Flange Style
EFI
Front Maximum Height
6.86" height with throttle body adapter
Fuel Injectors Included
No
Fuel Rail(s) Included
Yes
Fuel System Type
EFI
Gasket Or Seal Included
No
Grade Type
Performance
HTS Code
8409915085
Injector Quantity
Single
Inlet Location
Front
Intake Port Gasket(s) Included
No
Manifold Type
Ultra Lo-Ram
Material
Aluminum
Nitrous Bung(s) Included
No
Part Type
Engine Intake Manifold
Plenum Finish
Black
Product Type
Intake Manifold
Prop 65 Yes/No
No
Recommended Use
Forced Induction
Removable Runners
No
Removable Top/Lid
Yes
RPM Power Band
3500-8000 RPM
Single Or Dual Plane Type
Single Plane
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
CN
Emissions Code
3
HS Code
8409915085
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Dimensions & Shipping
Product Dimensions
20.2 × 15.5 × 15.4 in
Shipping Dimensions
20.2 × 15.5 × 15.4 in
Weight
13839 g (13.84 kg)