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HOLLEY LS3 Hi-Ram Im, EFI, 1 X 105mm LS

Original price was: £1,885.64.Current price is: £1,791.36. Inc. VAT

SKU: HOL300-117 Categories: , , Brand:

Description

Part Number: 300-117

Holley GM LS3 / L92 Modular Hi-Ram EFI Intake Manifold (105mm Throttle Body)

Engineered for high-RPM drag racing, extreme street performance, and forced induction applications where induction height is unrestricted.

Key Features

  • ☑ Modular 2-Piece Cast Aluminum Design: Features a high-flow base with a removable 105mm top plate for custom setups and ease of servicing.
  • ☑ Optimised High-RPM Power Band: Tuned 6.50″ runner length with tapered cross-section delivering peak horsepower between 7,000 and 8,000+ RPM.
  • ☑ High-Flow Fuel Rail Kit Included: Comes complete with billet fuel rails machined for -8AN O-ring fittings to handle high fuel demand and dampen pressure surges.
  • ☑ LS3/L92 Rectangular Port Heads: Direct fitment for GM Gen IV 6.0L, 6.2L, and 7.0L+ engines equipped with rectangular port cylinder heads.
  • ☑ Versatile Application: Perfect for naturally aspirated or high-boost forced induction builds (turbocharged/supercharged).

Technical Specifications


Manufacturer Holley EFI
Part Number 300-117
Engine Compatibility GM Gen IV LS3 / L92 (Rectangular Port Heads)
Intake Style Modular Hi-Ram Single Plane EFI
Throttle Body Flange 105mm GM LS Throttle Body
Power Band 7,000 – 8,000+ RPM
Material / Finish Cast Aluminum / Natural Satin
Fuel Rail Port Size -8AN O-Ring (-8AN ORB)
Overall Height 12.32″ (To block lifter valley cover flange)
Runner Length & Area 6.50″ Length | Tapered 4.25 sq in to 2.77 sq in

What’s Included in the Box

  • 1x Holley Modular Hi-Ram Base Intake Manifold (LS3/L92)
  • 1x 105mm EFI Plenum Top Plate (Natural Finish)
  • 1x Pair High-Flow Machined Billet Fuel Rails (-8AN ORB)
  • Plenum Top O-Ring Cord Gasket & Mounting Hardware
  • Port Gaskets & Fuel Rail Mounting Hardware

As an authorised Holley distributor in the UK, JP Racing provides genuine high-performance motorsport hardware back-up, expert fitment advice, and fast UK delivery. Build uncompromising induction flow with the Holley 300-117 Hi-Ram intake today.

Frequently Asked Questions

The Holley 300-117 is engineered specifically for GM Gen IV LS3 and L92 rectangular port cylinder heads (6.0L to 7.0L+). This specific kit includes a 105mm plenum top designed for 105mm GM LS pattern throttle bodies.

The included billet fuel rails feature -8AN O-ring (ORB) ports and are designed for Bosch EV1 or Magneti Marelli Pico style fuel injectors. Factory-height short LS3/LS7 injectors require height extension adapters to seat correctly in these fuel rails.

With an overall height of 12.32" from the valley cover flange, the Hi-Ram manifold is intended for high-performance track, race, or kit car applications where hood clearance is unrestricted. Most street vehicles (such as Gen 5 Camaros or Corvettes) will require a cowl hood or bonnet modifications.

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