Holley® - Hi-Ram Intake Manifold Holley® - Hi-Ram Intake Manifold

Holley® 300-143 - Hi-Ram Modular Satin EFI Cast Intake Manifold with Longitudinal Mount Plenum

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Notes:

This is a Race Only product that is to be used solely for competition. It cannot be used on vehicles that are operated on public streets, roads or highways. Its use is limited to closed-course and open-course racing that is formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, could be in violation of local, state and federal laws. Shipping Restriction: CA, NY, ME.

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Specifications

Manifold Style	EFI
Manifold Construction	Cast
Finish	Satin
Manifold Throttle Body	95mm
Port Height	2.06”
Port Width	1.53”
Overall Height	13.34”
A-B Height	12.10”
Height at Plenum Flange	9.44”
Runner Length	Approx. 6.5”
Additional Info	Large Plenum Volume of 549 Cubic Inches (w/ 1 x 95mm or 1 x 105mm Throttle Body Top)

Features

Rear of Plenum Machined for MAP & 3 Vacuum Ports
Head Flange has Clearance for Fuel Supply to High Pressure Pump
Increased Runner Wall Thickness for Custom Porting at the Plenum to Runner Entry on Each Runner
O-Ring Seals at Cylinder Heads & Plenum Top
Easy Assembly with Top Mounted Screws on Plenum Top (all except front 2 screws)

Product Details

Hi-Ram Modular EFI Cast Satin Intake Manifold with Longitudinal Mount Plenum (300-143) by Holley®. The runner length and tapered cross section design will perform well for a wide range of engine combinations. The engineering team also redesigned the water crossover passage to allow room for distributor phasing. 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!

Installation

Holley® - Hi-Ram Intake Manifold Installation Instruction

Holley® - Hi-Ram Intake Manifold Installation Instruction Holley® - FAQ Holley® - Warranty Holley® - Catalogs Holley Authorized Dealer

Brand:

Holley

Part Number:

300-143

UPC:

090127730546

Alternate MPN:

300143

Warranty

Holley warrants its products to be free from defects in materials or workmanship for a period of 90 days. The warranty period begins on the date the product is delivered.

Holley Performance Products Limited Warranty specifically does not apply to products, which have been (a) modified or altered in any way; (b) subjected to adverse conditions, such as misuse, neglect, accident, improper installation or adjustment, dirt or other contaminants, water, corrosion, or faulty repair; or (c) used in other than those applications recommended by Holley Performance Products. Holley Performance Products also does not warrant, and disclaims all liability for products used in racing activities and/or applications other than those specifically recommended in the current brand catalog.

Holley limits the warranty on Metallic Ceramic Coatings to be free from defects in material and workmanship for a period of 90 days from the date of purchase. This limited coating warranty does not apply to any products which have been subjected to adverse conditions, such as high heat encountered during engine break-in or if used during any racing activity.

Holley Performance Products warrants its new marine products to be free from defects in material and workmanship for a period of 90 days from date of purchase. For the safety and protection of persons and property, all United States Coast Guard and other marine product safety installation and use requirements and recommendations must be carefully studied and applied. The above recommendations include, but are not limited to the recommendation that the installation, adjustment, and repair of Holley carburetors or other marine products must be performed only by a trained mechanic having adequate marine fuel system experience, and in strict compliance with the applicable Holley installation, maintenance, and other instructions. Failure to follow such requirements and recommendations will void this Holley Marine Limited Warranty, and Holley disclaims any responsibility and/or liability for accidents resulting from such failure.

Holley® Performance Products warrants its Holley® Street Avenger™ Carburetor to be free from defects in material and workmanship for the life of the product on parts and one year on repair labor. After a period of one year, Holley® will charge standard rates for repair labor. For any Holley® Street Avenger™ Carburetor used in any type racing or off-road use will only be covered by a one (1) year limited warranty on parts and labor.

Holley® Performance Products warrants its Holley® Marine Avenger™ Carburetor to be free from defects in material and workmanship for the life of the product on parts and one year on repair labor. After a period of one year, Holley® will charge standard rates for repair labor. For any Holley® Marine Avenger™ Carburetor used in any type racing or off-road use will only be covered by a one (1) year limited warranty on parts and labor.

Magnuson-Moss Warranty Act:

Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More

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