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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 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 796 reviews
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Product Reviews
★★★★★ 4
Quality affordable
Size: 12 silicone wire red 10ft and black 10ft, Color: silicone wire red and black
Quality product at a great price.
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Reviewed in the United States on April 4, 2026
★★★★★ 5
Best wire on Amazon
Size: 12 silicone wire red 10ft and black 10ft, Color: silicone wire red and black
I am convinced that this is some of the best wire on Amazon, if not in general. It's much thicker with more strands inside than other wire labelled as the same AWG. It has much higher quality insulation that can withstand double the temps of the cheaper stuff (big deal if using in engine bay etc.). And even then somehow its supper supple and soft to work with, strips very easily and cleanly. Definitely recommend spending the extra $ to go with BNTECHGO brand for wire. I was very please with both the 12 and 14 AWG wire in 10ft red and black.
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Reviewed in the United States on August 13, 2024
★★★★★ 5
As advertised
Size: 12 silicone wire red 10ft and black 10ft, Color: silicone wire red and black
As advertised
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Reviewed in the United States on May 3, 2026
★★★★★ 5
Flexible, soft, and full of wire.
Size: 12 silicone wire red 10ft and black 10ft, Color: silicone wire red and black
Super-soft and flexible casing with a high density of fine wires inside. You won't have to worry about it being 90% insulation.
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Reviewed in the United States on September 15, 2025
★★★★★ 5
Very good audio receiver for my tower speakers and record player set up
Style: Stereo Receiver, Configuration: Receiver
I have had my 1980s Roger sound lab CG 82 Tower speakers connected to a 1999 Technics audio receiver. I use this set up for Radio and my record player.
After many good years, the low end on my audio receiver gave out. I have had it serviced before, but I have owned it for five years and it is a 27-year-old piece of gear that has seen better days. ChatGPT led me to this receiver.
It took me less than five minutes to connect my speakers. What I love about this receiver is that it’s so simple to use. The radio signal is very good right out the box without an additional antenna. I was resistant to buying a Bluetooth receiver, but it connected to my iPad and my iPhone in seconds. Now I can play backing tracks through my Roger sound lab speaker speakers while I jam out on guitar.
No issues with sound quality or anything like that. Runs cool and quiet. If you are a total audio file, you could buy something more expensive. I am a musician and I listen to vinyl. Mostly jazz and classical, and this is fine for my needs. For most people running a record player, looking to modernize with a Bluetooth enabled receiver, this will suit your needs.
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Reviewed in the United States on April 15, 2026