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Holley LT Modular Hi-Ram Lower Intake Manifolds 300-237 Manifolds, Modular, Hi-Ram, Base Only, Standard Deck, Tunnel Ram, 3,500-8,000 RPM Range, Aluminum, Satin Finish, Chevy, 5.3L, 6.2L, Each

Holley LT Modular Hi-Ram Lower Intake Manifolds 300-237 Manifolds, Modular, Hi-Ram, Base Only, Standard Deck, Tunnel Ram, 3,500-8,000 RPM Range, Aluminum, Satin Finish, Chevy, 5.3L, 6.2L, Each

A$2,062.91
BACKORDER This item will be special ordered in for you. Contact us prior to purchase if you require an ETA.
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Description

The design of Holley Hi-Ram GM LT1 lower manifolds allows for easy disassembly to do custom porting, use multiple tops, or create custom induction systems. Each runner has a large radius where it meets the plenum, as well as an optimized taper and cross-sectional area to perform in a wide variety of engine configurations. The bases are available with or without port EFI provisions. Are you looking for the ultimate performance? Begin with Holley LT Modular Hi-Ram lower intake manifolds.

Features include:

* Modular design with removable top
* Overall height: 13.34 in. with EFI top (95mm or 105mm)
* Overall height: 12.10 in. with carb-style top (2 x 4150 or 2 x 4500)
* Height at plenum flange: 9.44 in.
* Port size: 2.06 in. high x 1.53 in. wide
* Runner length: approximately 6.5 in.
* Large plenum volume of 549 cu. in. with 1 x 95mm or 1 x 105mm throttle body top
* Available with or without injector ports in the runners
* Intakes with injector ports include fuel rails with dual mounting (1.48 in. or 2.56 in.) O-ring to O-ring injector length
* Anodized fuel rails, laser-etched, and machined for -8 AN O-ring fittings
* Rear of plenum machined for MAP and three vacuum ports
* Head flange has clearance for fuel supply to a 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 and plenum top
* Top-mounted screws on plenum top (all except front two screws)
* Available top options: 1 x 95mm, 1 x 105mm, 2 x 4150, 2 x 4500, or blank flange for custom throttle bodies (all sold separately)
* 3,500-8,000+ rpm power band

Part Type

Intake Manifolds, Carbureted

Data: v4.2 - Upd: 2026-10-13 18:48:00

Specifications

Product Attributes - Brand
Holley
Product Attributes - Manufacturer's Part Number
300-237
Product Attributes - Part Type
Intake Manifolds, Carbureted
Product Attributes - Product Line
Holley LT Modular Hi-Ram Lower Intake Manifolds
Product Attributes - UPC
090127730607
Product Attributes - Intake Section Included
Base only
Product Attributes - Engine Block Deck Height
Standard deck
Product Attributes - Intake Style
Tunnel Ram
Product Attributes - Basic Operating RPM Range
3,500-8,000
Product Attributes - Intake Manifold Height
9.440 in.
Product Attributes - Intake Color
Natural
Product Attributes - Intake Material
Aluminum
Product Attributes - EGR
No
Product Attributes - Quantity
Sold individually.
Product Attributes - Notes
Height is at plenum flange. Overall height is dependent on top plate.

Reference Information

Brand Name/s Holley
StreetFX SKU hly300-237
SFX Item ID 4782726
Supplier Item Code 4782726
Manufacturer SKU 300-237
Manufacturer UPC N/A
Alternative References HOL300-237, 5.3L, 6.2L

Compatibility

Application Data
  • MakeCHEVROLET
    Beginning Year2014
    Ending Year2014
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size5.3L/325
    Cylinder Head TypeStock configuration
  • MakeCHEVROLET
    Beginning Year2014
    Ending Year2017
    Engine TypeV8
    Engine FamilyChevy small block Gen V
    Engine Size6.2L/376
    Cylinder Head TypeStock configuration
  • MakeCHEVROLET
    ModelCAMARO
    SubmodelSS
    Beginning Year2016
    Ending Year2017
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine FamilyChevy small block Gen V
    Engine Size6.2L/376
    Engine VIN Code7
  • MakeCHEVROLET
    ModelCAMARO
    SubmodelZL1
    Beginning Year2017
    Ending Year2017
    Engine TypeV8
    Liter6.2
    CID376
    CC6162
    Engine FamilyChevy small block Gen V
    Engine Size6.2L/376
    Engine VIN Code6

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