Holley Hi-Ram Lower Intake Manifold | GBP Performance
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Holley

Holley | Hi-Ram Lower Intake Manifold

300-227
Holley | Hi-Ram EFI Lower Intake Manifold 300-227 | EFI base only, fuel rails incl., cast aluminum, 2500-8500 RPM | LS1/LS2/LS6 Cathedral Port Heads
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CAD $1,260.48 CAD $1,482.92 Save 15% - FLASH SALE
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Holley – Hi-Ram EFI Lower Intake Manifold

Description

The Holley 300-227 modular Hi-Ram intake manifold for GM LS1/LS2/LS6 engines is a cost-effective alternative to fabricated sheet-metal for high-performance applications where induction system height is not limited. Its modular configuration accepts a wide range of carbureted and EFI tops, making it ideal for builders and custom fabricators. EFI fuel rails are machined for -8AN O-ring fittings with passages large enough to dampen fuel pressure pulsations. Intended for naturally aspirated or forced induction engines in the 6.0 to 7.0L+ range, max power at 7000–8000+ RPM. Compatible with LS1/LS2/LS6 Cathedral Port cylinder heads.

Specifications

  • Brand: Holley
  • Part Number: 300-227
  • Type: Hi-Ram EFI, lower position (base only)
  • Fuel Rails: Included
  • Compatible Heads: LS1/LS2/LS6 Cathedral Port
  • RPM Range: 2,500 to 8,500+ RPM
  • Construction: Cast aluminum
  • Without EGR provisions
  • Port size: 2.49 in. height x 1.21 in. wide
  • Runner length: 6.58 in.
  • Mounting flange gasket: Standard LS3 molded O-ring
  • Condition: New
  • Sold and shipped by GBP Performance

 

Note:

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Compatibility (Application)

MakeModelYearsEngineNotes
Not Application SpecificNot Application SpecificNot Application SpecificGM LS1/LS2/LS6 Cathedral PortUniversal application – refer to manufacturer specifications
Holley
300-227
90127681725

Data sheet

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