SKU: 4432209281

Holley Hi-Ram Lower Manifold - GM LT1 - 300-237

Sale price$350.98 Regular price$389.98
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Description

Holley Hi-Ram Lower Manifold - GM LT1 - 300-237Overview: 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

Overview:

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

Application:

Year Make Model Submodel Engine Size
Universal

Specs:

Brand Holley EFI
Construction Cast
Emission Code 3
Engine GM Gen V LT1
Finish Satin
Manifold Type Hi-Ram
Product Type Intake Manifold
RPM Power Band 3500-8000+
Type of Component Lower Manifold
Warranty Limited 90 Day
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 4432209281

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4.2 ★★★★★
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Product Reviews
H
H. Smith
Alexandria, US
★★★★★ 4
Another good Patchett book
Format: Kindle
Thanks go to the publisher and Netgalley for an advance copy of Whistler. I enjoyed this book. The story and characters, and references the the publishing world. I wanted to like it (at a 5 star level) more than I did. But overall, a good read.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
M
Mary Lins
Houston, US
★★★★★ 5
Wonderful, Gripping, Suspenseful, and Miraculous!
Format: Hardcover
The first thing I thought when I started reading Ann Patchett’s new novel, “Whistler” was: “Oh no, this is SO GOOD it’s going to go by too quickly!” I was right, and the only remedy to that is to read it again – it’s that great. Patchett has created a matryoshka doll of a novel with a story inside of a story inside of story, and they are ALL wonderful, gripping, suspenseful, and miraculous! The inciting incident that sets off the story takes place in the Metropolitan Museum of Art in NYC. As Daphne and her husband Jonathan take in the art, Jonathan notices that they are being followed by an older man who turns out the be Daphne’s former stepfather, Eddie, whom she hasn’t seen in 44 years (since she was nine) but who was pivotal in how her life unfolded. Through the narrative, Daphne, and her sister Leda, relive long forgotten memories from their brief but impactful time with Eddie, now understanding what they couldn’t as children. Patchett has written about blended families, divorce, and stepparenting before, in her wonderful 2016 novel “Commonwealth”, and in some of the personal essays about her own childhood. So, she knows what she’s talking about! Patchett beautifully evokes childhood nostalgia and skillfully portrays the way the past can sometimes seem more immediate than the present, highlighting reconnection, reconciliation, and grace. Thank you yet again, Ann; this was just the book I needed right now!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
V
V. Rock
Massapequa, US
★★★★★ 5
One of Ann Patchett’s best novels.
Format: Hardcover
“Whistler,” by Ann Patchett, Harper, 320 pages, June 2, 2026. Daphne and Jonathan Fuller are visiting the Metropolitan Museum of Art when Jonathan notices an older man following them. They go up to the next floor and the man is still following them. It turns out he is Eddie Triplett, Daphne’s former stepfather, who was married to her mother for a little more than year when Daphne was nine. They haven’t seen each other in almost 45 years, but he recognizes her. It is a chance meeting. Daphne teaches literature at a private school and Jonathan is a retired hospital administrator. Eddie is an editor at Random House, but he wasn’t at the office this day because of a water main break. Daphne visits her sister, Leda, to tell her about the encounter. Flashback to 1980, when Leda was having an appendectomy, Eddie was driving Daphne to the hospital in a snowstorm and they were in an accident. Daphne had to climb out of a car window and walk for help. After that, her mother divorced Eddie. Of course, there’s more to what happened. This is a wonderful story about adults looking back at the choices they’ve made and the choices that others made for them. It is about the small things that impact our lives and memories of childhood. It is about families, love and bravery. This is one of Ann Patchett’s best novels.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
E
Ellen
Bozeman, US
★★★★★ 5
Another amazing book from a talented author
Format: Kindle
This is one of my favorite authors so I knew I would enjoy this book and once again, the characters seemed so real like people I knew personally. I very much enjoyed Daphne and Eddie’s relationship and I loved learning about Eddie and Daphne’s mother’s life together and why things played out the way they did. This book truly shows how people can impact us forever regardless of how long they were in our life. There was so much beauty in this book despite the loss and sadness at times. I received an advance review copy for free, and I am leaving this review voluntarily.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
B
Verified Purchase
Bartika
Cuba, US
★★★★★ 5
A book that hugs back.
Format: Hardcover, Format: Hardcover
I picked this book for my brother-in-law when we were celebrating my sister’s pregnancy, and the title ‘Why a daughter needs a dad’ sealed the deal. The illustrations are beautiful and full of tenderness. The messages on each page are simple and meaningful. I could so clearly picture him reading it to his baby girl someday. It’s the kind of book that isn’t just read – it’s felt. A thoughtful gift for someone you love – especially during such a special season of life.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 13, 2026

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