Holley Hi-Ram Intake Manifold - GM LT1 300-142
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Features:
- Modular Design w/ Removable Top
- Overall Height: 13.34Ó (w/ EFI Top - 95mm or 105mm) Ð See Drawing
- A-B Height: 12.10Ó (w/ Carb Style Top - 2 x 4150 or 2 x 4500) Ð See Drawing
- Height at Plenum Flange: 9.44Ó
- Port Size: 2.06Ó High x 1.53Ó Wide
- Runner Length: Approx. 6.5Ó
- 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 (1.48Ó or 2.56Ó 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
About Holley EFI

Find standalone EFI for LS, Coyote, Hemi and more at Holley.com. From engine swapping to managing up to 4000 horsepower, we have a solution for every project!
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