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HOLLEYPART NUMBER: 510-300-207

300-207 Hi-Ram Intake Plenum Top Plate

Name: 300-207 Hi-Ram Intake Plenum Top Plate
Brand: HOLLEY
SKU: 510-300-207
Price: 299.95 USD
Availability: InStock

^$299⁹⁵

Ships on 09/09/2026

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2 x 4150

Hi-Ram Intake Plenum Top Plate

GM Gen V LT1

2 x 4150 Carb Flange Configuration

Cast Aluminum

Satin Finish

Holley 300-207 Features:

Fits Holley Hi-Ram Manifolds.They are available in the dual 4150 throttle body pattern or in a full blank top so that you can design your our system. The plenum tops are constructed of cast aluminum.

Modular Design w/ Removable Top
A-B Height: 12.10” (w/ Carb Style Top - 2 x 4150 or 2 x 4500) – See Drawing
Height at Plenum Flange: 9.44”
O-Ring Seals for Plenum Top

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

Swap the Plate, Not your Intake!

Holley Interchangeable Intake Plates are for use exclusively with Holley's line of fabricated intake manifolds. Each modular top plate allows the top configuration to be changed while the base stays the same. Sold individually, plenum tops are available in both satin or black finishes to match the corresponding manifold bases.

Part TypeIntake Manifold Adapter

Product LineHolley Interchangeable Top Intake Plates

BrandHOLLEY

Package Height3.5

Package Width10.5

Package Length20.5

Weight8.5 PG

Part CategoryPerformance Parts

UsageRacing

Number Of CarbsTwo

PositionUpper

EmissionWithout EGR

Rpm RangeN/A

Cylinder Head TypeLT1

Part FitmentSemi Universal

Engine Make/SizeChevy LT1

Vendor Part Number300-207

Package Qty1

Package TypeEA

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508-25 Gen V LT1 Hi-Ram Intake Manifold Gasket O-Ring Set Replacement O-Ring Kit for Port to Head

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Some parts are not legal for use in California or other states with similar laws / regulations

300-207 Hi-Ram Intake Plenum Top Plate

Holley 300-207 Features:

Swap the Plate, Not your Intake!

Items You Need

508-25 Gen V LT1 Hi-Ram Intake Manifold Gasket O-Ring Set Replacement O-Ring Kit for Port to Head

Part Number : 510-508-25

300-224 Gen V LT1 Hi-Ram Intake Manifold Mounting Stud Kit Kit Includes - 10 Studs, 10 Washers, 10 Nuts

Part Number : 510-300-224

508-25 Gen V LT1 Hi-Ram Intake Manifold Gasket O-Ring Set Replacement O-Ring Kit for Port to Head

Part Number : 510-508-25

300-224 Gen V LT1 Hi-Ram Intake Manifold Mounting Stud Kit Kit Includes - 10 Studs, 10 Washers, 10 Nuts

Part Number : 510-300-224

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