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Description
Holley 300-122BK LS HI-Ram EFI Manifold- BlackLS1 2 6 HI RAM IM, EFI, 92MM LS TB BLACK Overview The Holley GM LS1 LS2 LS6 Modular Hi Ram Intake Manifold is introduced as a cost effective alternative to fabricated sheet metal for high performance applications where induction system height is not limited. Coupling this Hi Ram intake with the high flowing LS1 LS2 LS6 style cylinder heads has outstanding potential for N A and forced induction applications at a budget minded cost. Aggressive, bold,
LS1/2/6 HI-RAM IM, EFI, 92MM LS TB-BLACK
Overview
The Holley GM LS1/LS2/LS6 Modular Hi-Ram Intake Manifold is introduced as a cost effective alternative to fabricated sheet-metal for high-performance applications where induction system height is not limited. Coupling this Hi-Ram intake with the high flowing LS1/LS2/LS6 style cylinder heads has outstanding potential for N/A and forced induction applications at a budget-minded cost. Aggressive, bold, race-bred styling will make bad intentions clear for drag race, muscle car, marine, off-road, sandrails, pulling trucks, track, street-rod applications and more! The base is designed to be modular in configuration to accept a wide range of carbureted and EFI tops and to be attractive to builders and fabricators as the foundation for custom induction systems. Runner length and the tapered cross-section designed to perform well for a wide range of engine configurations EFI fuel rails are machined for -8AN O-ring Fittings with passages large enough to accommodate high fuel flows and dampen pressure pulsations in the fuel system and come standard with EFI Hi-Ram kits. Cast aluminum construction. Intended for use on N/A or forced induction engines in the 6.0 to 7.0+ liter range, max power at 7000-8000+RPM.
Features:
- Base Plenum Top Mounting Flange Height – 8.42” to the lifter valley cover flange on engine block.
- Total Height with 92/102mm EFI Plenum Top – 12.32” to the lifter valley cover flange on engine block.
- Port Size – 2.49” Height x 1.21” Wide
- Mounting Flange Gasket Type – Standard LS3 Molded O-Ring
- Plenum Top Gasket Type – 3/32” Round O-ring Cord
- Throttle Body Flange Location, with 92mm EFI Plenum Top : Height – 8.42” (from engine block lifter valley cover flange), Longitudinal Location – 3.84” (forward from engine block front flange), Angle – 25 deg. (down from vertical)
- Runner Length – 6.58”, As-Cast Runner Cross-Sectional Area – Tapered 4.25 in² to 2.53 in²
Specs
| Brand | Holley EFI |
|---|---|
| Color | Black |
| Construction | Cast |
| Emission Code | 3 |
| Engine | GM LS1/LS2/LS6 |
| Finish | Black |
| Front Height | 12.32 inch |
| Fuel System Type | EFI |
| Manifold Type | Hi-Ram |
| Product Type | Manifold |
| Rear Height | 11.00 inch |
| RPM Power Band | 1500-7000 |
| Warranty | Limited 90 Day |
| Part Number | 300-122BK |
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4.7 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 5
Good and Healthy Product
Size: 90 Count (Pack of 1)
Excellent
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Reviewed in the United States on May 16, 2026
★★★★★ 5
GREAT READ
Format: Hardcover
I can’t stop thinking about Laws of Love and Logic, a debut novel by Debra Curtis. It’s beautifully written, incredibly heartbreaking, but nevertheless hopeful. It’s definitely not your typical romance novel rather it’s heavily character driven, and thought provoking. The characters feel so real. The way the author writes about the sisters’ relationship will stay with me forever. Also, having grown-up Catholic, I was so inspired to see progressive Catholicism with an emphasis on serving the most vulnerable, as being a foundational part of the sisters’ lives. The story spans decades, opening in the 70s and follows the characters into middle age. If you like books by Elizabeth Strout and Ann Patchett, you’ll love this one.
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Reviewed in the United States on May 1, 2026
★★★★★ 4
A little slow start. Had read ahead to get into the book.
Format: Hardcover
Good read.
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Reviewed in the United States on February 27, 2026
★★★★★ 5
Highly recommended read!!
Format: Hardcover
My book club read this. It’s a thoughtful and emotional story with believable characters and strong family themes. I especially loved the message of forgiveness, which added real depth to the story. I’m from the area where the book takes place and found the setting and details extremely accurate. I could picture myself in and around it. Loved it and highly recommend. Looking forward to this author’s next book!
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Reviewed in the United States on May 1, 2026
★★★★★ 3
Ughhh
Format: Kindle
So Depressing. Abrupt ending! That's all I can write about this book. I wanted so much more for the characters.
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Reviewed in the United States on April 17, 2026