Holley – Hi Ram Intake Manifold 105mm Longitudinal Mount w/ Port EFI Provision Gen V LT1 (300-140)
$1,349.95
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GM Gen V LT1 Hi-Ram, 1 x 105mm LS Throttle Body (Longitudinal Mount) w/ Port EFI Provisions
- Fits GM Gen V LT1 engines
- Compatible with OE or aftermarket heads
- Supports 427-440 cubic inch engines
- Handles 7500-8500 rpm speeds
- Requires modified hood
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Description
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.
Features:
- 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
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Questions & Answers (7)
Customer questions & answers
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What is the differences from having a port EFI then not having one ? Does it matter it? I seen on the site that’ it’s two different kind of 105mm hi rams
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Q What is the differences from having a port EFI then not having one ? Does it matter it? I seen on...... Read more answer nowAsked by on January 9, 2025 8:30 pmA You won’t need port injection prevision unless you’re running port injection in addition to the factory direct injection for a high horsepower power adder build or if you’re running some sort of nitro fuel mix for a na set up
will the 103mm soler performance TB fit this intake and be a good choice for a lt1 C7
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Q will the 103mm soler performance TB fit this intake and be a good choice for a lt1 C7 answer nowAsked by on December 4, 2024 9:59 pmA Yes it will fit, we don't use soler products but use katech
Doing the porting service would fit the katech 112m? if not in what manifold it would fit the katech 112m? Thanks
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Q Doing the porting service would fit the katech 112m? if not in what manifold it would fit the kat...... Read more answer nowAsked by on May 23, 2023 5:10 amA You'll need a 103 to 112 adapterA and do you offer that adapter? it would make a difference about the 105mm? or you would better recommend to go with the katech 105mm on this manifold?
Which best the high ram or msd bc I have you all msd, stage 2 cam, kooks 2 inch headers, roto fab & I plan on going with you all ported heads & converter so which is best to keep the msd or go high ram ?
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Q Which best the high ram or msd bc I have you all msd, stage 2 cam, kooks 2 inch headers, roto fab...... Read more answer nowAsked by on April 10, 2022 11:01 pmA If you’re planning on sticking with the ss2 cam I’d stick with msd. If going to switch to say ss4 or bigger cam go hi ram
Looking for a solution to fit a 103mm throttle body on my '14 sierra L83. Was looking at replacing with a stock L86 manifold, but before pulling the trigger on that, was seeing what options I have to go bigger than 95mm. Would this do the trick for me? I do have an extra 3" under the hood from a body lift.
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Q Looking for a solution to fit a 103mm throttle body on my '14 sierra L83. Was looking at replacin...... Read more answer nowAsked by on January 23, 2021 4:07 pmA The Hi-Ram is the only way you will be able to run the 103mm on this setup
Want to know do y’all have adapter plate for hi ram 95 to 103
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Q Want to know do y’all have adapter plate for hi ram 95 to 103 answer nowAsked by on January 22, 2021 5:00 pmA We do not
What’s a perfect size TB to fit this ported Holley hi ram for a 6th gen Camaro SS??
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Q What’s a perfect size TB to fit this ported Holley hi ram for a 6th gen Camaro SS?? answer nowAsked by on October 21, 2020 6:29 amA We usually use the Katech 103mm for the all out N/A builds.
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