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Description
Holley 300-122 LS HI-Ram EFI ManifoldLS1 2 6 HI RAM IM, EFI, 92MM LS TB 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
LS1/2/6 HI-RAM IM, EFI, 92MM LS TB
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
Application
- 1953-2019 Chevrolet Corvette
- 1964-2019 Pontiac GTO
- 1966-2019 Chevrolet Camarro
Specs
| Brand | Holley EFI |
|---|---|
| Color | Aluminum |
| Construction | Cast |
| Emission Code | 3 |
| Engine | GM LS1/LS2/LS6 |
| Finish | Satin |
| Flange Style | EFI |
| 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 | 300-122 |
Shipping Notes
- Free Standard Shipping on $100+ Orders 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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4.0 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Great batana oil for hair
Banana oil is so incredible, I will never stop singing its praises. I am prone to dry scalp and have thin, curly hair that needs just the right amount of moisture or it will frizz out. Batana oil has helped restore balance to my scalp and reduced flakes and it adds just enough moisture to my hair. This oil is a great version. It is thick, but not so thick that it doesn't melt in your hands if you rubs them together. I also have not noticed any stickiness or excessive left on my hands that can happen with some Banana oil brands. I do want to note that I usually put the batana oil on my scalp, let it sit for 15-20 minutes then wash it out, if you are going to let it stay in your hair, this may be too heavy for you. Otherwise, a great deal at the list price of $14, since a little goes a long way.
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Reviewed in the United States on May 19, 2026
★★★★★ 1
not good
Size: 4.2 Fl Oz (Pack of 1)
this burn my skin, this is not Dr. Sebi because is no longer with us.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026
★★★★★ 3
On the fence...
Will be updating review after I have used it for more than a week.
But so far here are the pros and cons:
Pros:
Smells good
Seems like a little goes a long way
Easy to apply
Cons:
Not sure if this is because I didn't use Sulfate free shampoo, but felt like with one wash I didn't get all the product out of my hair, so when It dried, it still looked greasy/oily
Will be washing my hair again with sulfate free shampoo, then will do another application in another day or so.
it says to use 2-3 times a week, so I'll use it 3 times a week for 2 weeks and then come back and update my review. But so far, it seams like a good product and for the money, it's a fair value.
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Reviewed in the United States on January 20, 2026
★★★★★ 5
Makes my hair shine.
Size: 3.38 Fl Oz (Pack of 1)
This product makes my hair smell good and shiny. You only need to use a small amount for results. I am sure my hair will grow since oil is good for your hair.
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Reviewed in the United States on May 24, 2026
★★★★★ 5
Natural solution
Size: 3.38 Fl Oz (Pack of 1)
Excellent moisturizer! Has a light fragrance and not oily. Only used for a few days so can't attest tolong term benefits.
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Reviewed in the United States on May 29, 2026