Holley EFI - Holley Hi-Ram Intake Manifold - GM LT1 300-140

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 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 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.

Features:

• Modular Design w/ Removable Top
• Available With or Without Injector Ports in the Runners
• Fuel Rails are Anodized, Laser Etched, and Machined for 8AN O-Ring Fittings at Each End
• Rear of Plenum Machined for MAP and 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 and Plenum Top
• Easy Assembly w/ Top Mounted Screws on Plenum Top (all except front 2 screws)
• Injectors are 40mm Height measured O-Ring to O-Ring utilizing a 14mm O-Ring diameter, not for use in LS2/LS3/LSA applications without the use of a custom lower O-Ring
• 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” Height x 1.53” Width
• Runner Length: Approx. 6.5”
• Large Plenum Volume of 549 Cubic Inches (w/ 1 x 95mm or 1 x 105mm Throttle Body Top)
• Intakes w/ Injector Ports Include Fuel Rails w/ Dual Mounting (1.48” or 2.56” O-ring to O-ring injector length)
• 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

Specs:

• Basic Operating RPM Range: 3500-8000+ RPM
• Brand: Holley EFI
• Category: Engine
• Color: Natural
• Construction: Cast
• EGR Port: No
• Emission Code: 4
• Engine: GM Gen V LT1
• Finish: Satin
• Flange Style: EFI
• Fuel Injectors Included: No
• Fuel Rail(s) Included: Yes
• Gasket Or Seal Included: Yes
• Grade Type: Performance
• Intake Port Gasket(s) Included: No
• Manifold Type: Hi-Ram
• Material: Aluminum
• Nitrous Bung(s) Included: No
• Part Type: Engine Intake Manifold
• Plenum Finish: Natural
• Product Type: Intake Manifold
• Removable Runners: No
• RPM Power Band: 3500-8000+ RPM
• Single Or Dual Plane Type: Single Plane
• Sub Category: Cylinder Block Components
• Throttle Body Bore Diameter: 105 MM
• Throttle Body Included: No
• Warranty: Limited 90 Day

Tech Resources:

*** The front and rear height measurements listed in the Specs section are referencing the overall height with the top plate installed. Please see the diagrams in the product images for other dimensions.

Instructions - 199r10910.pdf