Hero image 0 of Holley EFI 300-620 Holley Modular Lo-Ram EFI Manifold LS1/2/6, 0 of 11

Holley EFI 300-620 Holley Modular Lo-Ram EFI Manifold LS1/2/6

Name: Holley EFI 300-620 Holley Modular Lo-Ram EFI Manifold LS1/2/6
Brand: HOLLEY EFI
SKU: 471811489
Price: 1075.95 USD
Availability: InStock

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Key item features

Engine Compatibility: Designed for GM LS Gen III and IV engines utilizing GM LS1/2/6 cathedral port cylinder heads, compatible with both OE and aftermarket heads.
Forced Induction: Optimized for supercharged or turbocharged engine applications, with peak power achievable between 7000-8000 rpm depending on the specific setup.
Modular Design: Features a modular construction that allows for the use of the included top-feed plenum entry, enhancing adaptability.
Compact Packaging: Engineered with a low height to facilitate the integration of a plenum-mounted air-to-water intercooler in a top-feed configuration, or to fit under stock/mildly modified hoods in a front-feed setup.
Fuel System: Includes high-volume fuel rails and mounting hardware, equipped with 3/4-16 o-ring ports (8 AN) and brackets for both long and short fuel injectors.
Throttle Body: Designed to work with a 105 mm throttle body, such as part number 112-581 or similar models.

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Specs

Vehicle make
GM
Vehicle model
LS1, 2, 6
Vehicle fitment type
Specific
Brand
HOLLEY EFI
Material
Plastic
Automotive parts division
Performance

Current price is $1,075.95

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Comparison Overview:
Product	Viewing this item Holley EFI 300-620 Holley Modular Lo-Ram EFI Manifold LS1/2/6 current price $1,075.95 Holley EFI 300-620 Holley Modular Lo-Ram EFI Manifold LS1/2/6	Holley EFI 300-620BK Holley Modular Lo-Ram EFI Manifold LS1/2/6 current price $1,126.95 Holley EFI 300-620BK Holley Modular Lo-Ram EFI Manifold LS1/2/6	Holley EFI 300-910 Hi-Ram EFI Intake Manifold Coyote - As Cast Finish current price $821.57 Holley EFI 300-910 Hi-Ram EFI Intake Manifold Coyote - As Cast Finish	Holley EFI 300-623 LS1 Lo-Ram EFI Front-Feed Manifold Kit current price $727.96 Holley EFI 300-623 LS1 Lo-Ram EFI Front-Feed Manifold Kit	Holley 300-682BK Ultra Lo-Ram Manifold with Burst Panel Single Injector Black current price $949.95 Holley 300-682BK Ultra Lo-Ram Manifold with Burst Panel Single Injector Black	Holley 300-275 8.2 Inch SBF Hi-Ram Carbureted Manifold Base current price $819.95 Holley 300-275 8.2 Inch SBF Hi-Ram Carbureted Manifold Base	Edelbrock Victor EFI Intake Manifolds 29365 current price $1,049.95 Edelbrock Victor EFI Intake Manifolds 29365	Holley 300-951 Holley Hi-Ram Front-Feed EFI Intake Manifold Kit - Small Block Chevy current price $999.95 Holley 300-951 Holley Hi-Ram Front-Feed EFI Intake Manifold Kit - Small Block Chevy	Holley Ultra Lo-Ram Manifold Kit and Port Injection Fuel Rails - GM Gen V LT current price $1,049.95 Holley Ultra Lo-Ram Manifold Kit and Port Injection Fuel Rails - GM Gen V LT	Holley Ultra Lo-Ram Manifold Kit - GM Gen V LT current price $1,014.95 Holley Ultra Lo-Ram Manifold Kit - GM Gen V LT

Comparison Chart:
Vehicle make	GMHolley EFI 300-620 Holley Modular Lo-Ram EFI Manifold LS1/2/6	GMHolley EFI 300-620BK Holley Modular Lo-Ram EFI Manifold LS1/2/6	FordHolley EFI 300-910 Hi-Ram EFI Intake Manifold Coyote - As Cast Finish	GMHolley EFI 300-623 LS1 Lo-Ram EFI Front-Feed Manifold Kit	GMHolley 300-682BK Ultra Lo-Ram Manifold with Burst Panel Single Injector Black	FordHolley 300-275 8.2 Inch SBF Hi-Ram Carbureted Manifold Base	FordEdelbrock Victor EFI Intake Manifolds 29365	GMHolley 300-951 Holley Hi-Ram Front-Feed EFI Intake Manifold Kit - Small Block Chevy	GMHolley Ultra Lo-Ram Manifold Kit and Port Injection Fuel Rails - GM Gen V LT	GMHolley Ultra Lo-Ram Manifold Kit - GM Gen V LT
Vehicle model	LS1Holley EFI 300-620 Holley Modular Lo-Ram EFI Manifold LS1/2/6	LS1Holley EFI 300-620BK Holley Modular Lo-Ram EFI Manifold LS1/2/6	CoyoteHolley EFI 300-910 Hi-Ram EFI Intake Manifold Coyote - As Cast Finish	LS1/2/6Holley EFI 300-623 LS1 Lo-Ram EFI Front-Feed Manifold Kit	LS Gen III and IVHolley 300-682BK Ultra Lo-Ram Manifold with Burst Panel Single Injector Black	SBFHolley 300-275 8.2 Inch SBF Hi-Ram Carbureted Manifold Base	FE Big BlockEdelbrock Victor EFI Intake Manifolds 29365	-Holley 300-951 Holley Hi-Ram Front-Feed EFI Intake Manifold Kit - Small Block Chevy	Gen V LT1Holley Ultra Lo-Ram Manifold Kit and Port Injection Fuel Rails - GM Gen V LT	Gen V LT1Holley Ultra Lo-Ram Manifold Kit - GM Gen V LT
Vehicle fitment type	SpecificHolley EFI 300-620 Holley Modular Lo-Ram EFI Manifold LS1/2/6	SpecificHolley EFI 300-620BK Holley Modular Lo-Ram EFI Manifold LS1/2/6	SpecificHolley EFI 300-910 Hi-Ram EFI Intake Manifold Coyote - As Cast Finish	SpecificHolley EFI 300-623 LS1 Lo-Ram EFI Front-Feed Manifold Kit	SpecificHolley 300-682BK Ultra Lo-Ram Manifold with Burst Panel Single Injector Black	SpecificHolley 300-275 8.2 Inch SBF Hi-Ram Carbureted Manifold Base	SpecificEdelbrock Victor EFI Intake Manifolds 29365	UniversalHolley 300-951 Holley Hi-Ram Front-Feed EFI Intake Manifold Kit - Small Block Chevy	SpecificHolley Ultra Lo-Ram Manifold Kit and Port Injection Fuel Rails - GM Gen V LT	SpecificHolley Ultra Lo-Ram Manifold Kit - GM Gen V LT
Material	PlasticHolley EFI 300-620 Holley Modular Lo-Ram EFI Manifold LS1/2/6	PlasticHolley EFI 300-620BK Holley Modular Lo-Ram EFI Manifold LS1/2/6	Cast IronHolley EFI 300-910 Hi-Ram EFI Intake Manifold Coyote - As Cast Finish	Cast IronHolley EFI 300-623 LS1 Lo-Ram EFI Front-Feed Manifold Kit	Cast IronHolley 300-682BK Ultra Lo-Ram Manifold with Burst Panel Single Injector Black	Cast aluminumHolley 300-275 8.2 Inch SBF Hi-Ram Carbureted Manifold Base	AluminumEdelbrock Victor EFI Intake Manifolds 29365	AluminumHolley 300-951 Holley Hi-Ram Front-Feed EFI Intake Manifold Kit - Small Block Chevy	AluminumHolley Ultra Lo-Ram Manifold Kit and Port Injection Fuel Rails - GM Gen V LT	SatinHolley Ultra Lo-Ram Manifold Kit - GM Gen V LT

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About this item

Product details

Lo-Ram Manifold Kit - LS1/2/6 Top-feed;

The Holley LS1/2/6 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 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 low height to aid the packaging of a plenum mounted air-to-water intercooler in a top-feed configuration.
The 300-620 top-feed plenum entry configuration is designed to allow the included Hi-Ram 105 mm plenum top to be fitted to a low-profile base intake manifold. The short runner, low-profile base intake manifold intended for forced induction applications was conceived to package with an air to water plenum mounted intercooler with a shorter overall height than possible with other existing intake manifolds.
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.;

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. With forced-induction and the short runner length the engine rpm at which peak power occurs is more likely to
Modular design allowing the use of the included top-feed plenum entry
Low height to aid the packaging of a plenum mounted air-to-water intercooler in a top-feed configuration or to fit under a stock or mildly modified hood in the front-feed configuration
High volume fuel rails and mounting hardware included with Â3/4â€-16 o-ring ports (8 AN)

info:

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Specifications

Compatible cars

GM LS Gen III and IV engines

Vehicle make

Vehicle model

LS1, 2, 6

Vehicle fitment type

Specific

Warranty

Warranty information

90 Days

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