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Holley 300-143 Hi-Ram Intake Manifold, LT1, 92mm, w/o Port EFI

-7%

Holley 300-143 Hi-Ram Intake Manifold, LT1, 92mm, w/o Port EFI
Holley

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#425300143

Holley 300-143 Hi-Ram Intake Manifold, LT1, 92mm, w/o Port EFI

  • Engineered to provide the ultimate performance on the new GM direct injected Gen V 6.2L LT1 engine
  • Can be easily disassembled for custom porting, multiple tops, or custom induction systems
  • Each runner has a large radius where it meets the plenum
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$1,117.95

/each

Factory Shipped

$1,210.95

Save $93.00


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Product Summary

EFI Fuel System Type, Direct Injection Injection Style

  • Engineered to provide the ultimate performance on the new GM direct injected Gen V 6.2L LT1 engine
  • Can be easily disassembled for custom porting, multiple tops, or custom induction systems
  • Each runner has a large radius where it meets the plenum
  • Runners have an optimized taper and cross-sectional area to perform in a wide variety of engine configurations
  • The optional injector bosses on the intake runners allow increased performance potential
See more details

Key Specs

MFG. Part #300-143
Injection StyleDirect Injection
Intake Manifold TypeHi-Ram
RPM Range3,500-8,000
Material TypeAluminum
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Holley 300-143 Details

The new Holley EFI Hi-Ram intake provides the ultimate performance with the new GM direct injected Gen V 6.2L LT1 engine. The modular design of this manifold allows easy disassembly for custom porting, multiple tops, or custom induction systems. Each runner has a large radius where it meets the plenum, and optimized taper & cross-sectional area to perform in a wide variety of engine configurations. The optional injector bosses on the intake runners allow increased performance potential by using additional injectors along with the factory direct injection. When you look for the pinnacle of performance, price, and quality, look to Holley EFI.

GM Gen V LT1 Hi-Ram, 1 x 92mm LS Throttle Body (Longitudinal Mount) w/out Port EFI Provisions

  • Modular Design w/ Removable Top
  • Overall Height: 13.34” (w/ EFI Top - 95mm or 105mm) – See Drawing
  • A-B Height: 12.10” (w/ Carb Style Top - 2 x 4150 or 2 x 4500) – See Drawing
  • Height at Plenum Flange: 9.44”
  • Port Size: 2.06” High x 1.53” Wide
  • Runner Length: Approx. 6.5”
  • Large Plenum Volume of 549 Cubic Inches (w/ 1 x 95mm or 1 x 105mm Throttle Body Top)
  • Available With or Without Injector Ports in the Runners
  • Intakes w/ Injector Ports Include Fuel Rails w/ Dual Mounting (1.48” or 2.56” O-ring to O-ring injector length)
  • Fuel Rails are Anodized, Laser Etched, and Machined for 8AN O-Ring Fittings at Each End
  • 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 w/ Top Mounted Screws on Plenum Top (all except front 2 screws)
  • Several Top Options: 1 x 95mm, 1 x 105mm, 2 x 4150, 2 x 4500, or Blank Flange for Custom Throttle Bodies
  • 3500-8000+ RPM Power Band

Charts

CARB Warning

For race/ off road use only

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.
CARB warning

Holley 300-143 Specifications

KEY SPECS
MFG. Part #300-143
BrandHolley
Injection StyleDirect Injection
Intake Manifold TypeHi-Ram
RPM Range3,500-8,000
Material TypeAluminum
GENERAL
Fuel System TypeEFI
FinishNatural
EGRNo
Throttle Body Bore Size92mm
Intake Section IncludedComplete
Plenum MaterialAluminum
Plenum FinishNatural
Throttle Body IncludedNo
Injectors IncludedNo
Aftermarket Fuel Rail RequiredNo
Fuel Rails IncludedNo
Overall Height13.34"
Runners IncludedYes
Runners RemovableNo
Supplemental Bosses Cast-InNo
Supplemental Bosses MachinedNo
Sold in QuantityKit
GTIN Code090127730546

Questions & Answers

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Fitment

  • 6.2 Chevy LT V8

  • 6.2 Chevy LT V8

  • 6.2 Chevy LT V8

  • Chevy LT V8 Gen V 6.2 LT4

  • Chevy LT V8 Gen V 6.2 LT1

  • 5.3 Chevy LT V8

  • 6.2 Chevy LT V8

  • 5.3 Chevy LT V8

  • 6.2 Chevy LT V8

  • 5.3 Chevy LT V8

  • 6.2 Chevy LT V8

  • 5.3 Chevy LT V8

  • 6.2 Chevy LT V8

  • 5.3 Chevy LT V8

  • 6.2 Chevy LT V8

  • 5.3 Chevy LT V8

  • 5.3 Chevy LT V8

  • 5.3 Chevy LT V8

  • 5.3 Chevy LT V8

  • 6.2 Chevy LT V8

  • 5.3 Chevy LT V8

  • 5.3 Chevy LT V8

  • 5.3 Chevy LT V8

  • 5.3 Chevy LT V8

  • 6.2 Chevy LT V8

  • 5.3 Chevy LT V8

  • 5.3 Chevy LT V8

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