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Description
Holley Modular Lo-Ram EFI Manifold LS1/2/6 - 300-621BKOverview: The Holley LS1 2 6 Lo Ram intake manifold kits are designed for GM LS Gen III and IV engines equipped with GM LS1 2 6 (cathedral port) cylinder heads. These intake manifolds will work with OE or aftermarket cylinder heads. The Lo Ram intake manifolds are designed for forced induction (supercharged or turbocharged) engine applications and the 105 mm throttle body part number 112 581 or similar models. The base intake manifold is designed with
Overview:
The Holley LS1/2/6 Lo-Ram intake manifold kits are designed for GM LS Gen III and IV engines equipped with GM LS1/2/6 (cathedral port) cylinder heads. These intake manifolds will work with OE or aftermarket cylinder heads. The Lo-Ram intake manifolds are designed for forced induction (supercharged or turbocharged) engine applications and the 105 mm throttle body part number 112-581 or similar models. The base intake manifold is designed with a lower overall height to fit under a stock or mildly modified hood in the front-feed configuration.
The 300-621 Lo-Ram front-feed plenum entry was configured to provide a very low profile modular intake manifold suitable for turbocharged or centrifugally supercharged engines.
The fuel rail kits come with two sets of brackets. A set for long (usually standard length) fuel injectors and a set for short (such as Pico, or LS7) fuel injectors.
Features:
- Designed for GM LS Gen III and IV engines equipped with GM LS1/2/6 (cathedral port) cylinder heads
- Designed for forced induction (supercharged or turbocharged) engine applications with peak power at 7000-8000 rpm depending on the application.
- With forced-induction and the short runner length the engine rpm at which peak power occurs is more likely to be coupled to the supercharger or turbocharger being used
- Modular design allowing the use of front-feed plenum entry
- Intake design facilitates custom inlet duct and throttle body placement
- Low height to fit under a stock or mildly modified hood in the front-feed configuration
- Front entry plenum flange allows design & fabrication of special throttle body adapters or inlet ducts for custom installations
- Clears 4th Gen Camaro and C5 Corvette cowls and hoods without modification
- High volume fuel rails and mounting hardware included with ¾”-16 o-ring ports (8 AN)
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| Universal |
Specs:
| Brand | Holley EFI |
|---|---|
| Color | Black |
| Construction | Cast |
| Emission Code | 3 |
| Engine | GM Small Block Gen III/IV (LS Based) |
| Finish | Black |
| Flange Style | EFI |
| Front Height | 6.86" height with throttle body adapter |
| Fuel System Type | EFI |
| Manifold Type | Lo-Ram |
| Product Type | 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:
- 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 913 reviews
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Product Reviews
★★★★★ 5
This is a better quality matcha than what is used at Starbucks!
Size: 32 Ounce (Pack of 1)
This product is better than the matcha powder mix used at Starbucks! Starbucks uses a 51% sugar mix with questionably sourced matcha/sencha making up the other 49%. It has no tea flavor as it's basically just sweetened milk. If you've come to matcha through the Starbucks lens, this is NOT that product. It's what you should be drinking instead!
When I've tried to get matcha powder locally at the grocery store, I've not been able to find one that is the same quality as this in such a value size quantity. For size reference, I'm pretty sure this size bag could last one person 3mos even if they were drinking a matcha latte everyday. This matcha here packs a bolder flavor, a better boost of energy, and more mental clarity without the crash that you'd have from coffee. It is unsweetened, which gives you the freedom to make the final product (latte, smoothie, whatever) as sweet or unsweet as you like. The powder is ULTRA fine, and is about the consistency of powdered sugar. It dissolves wonderfully in a few ounces of the liquid of your choice (I prefer oatmilk), and it suspends very nicely and does not sink to the bottom when at rest for a few moments.
All around highly recommend. Unless you're Japanese and have had that real good stuff and would know the difference, this is probably good enough for most people.
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Reviewed in the United States on April 25, 2024
★★★★★ 5
Pretty good, recommend
Size: 16 Ounce (Pack of 1), Size: 16 Ounce (Pack of 1)
These are some photos and this Morton salt for size comparison. It’s pretty big. It has a spoon inside which is pretty useful.
Ok so I really like this matcha. Its culinary grade and it tastes pretty good. I use it for my daily matcha latte. Its not bitter and actually slightly sweet-ish, but it has no additives so its nice. It does get a little clumpy when I stir it, I wish I had a matcha whisk, I just use a spoon.
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Reviewed in the United States on November 6, 2025
★★★★★ 4
Worth the money
Size: 16 Ounce (Pack of 1)
I'm inexperienced with matcha... Just wanted to order some good matcha, only to discover all of these obscure classifications and prices varrying wildly.
Before this brand, I ordered ceremonial and also "culinary cafe" from the jade brand. Couldn't really taste a significant difference, so I didn't sweat purchasing this.
There is a difference with this: the higher quality matchas did foam more when mixing and had slightly thicker consistency, and tasted a bit less grassy. This brand actually tastes fantastic, if you don't mind a very subtle grassy but sweet flavor. The savory sweet flavor dominates in a good way; grassy is very much still nothing more than an afterthought. But - and a very significant but - it hardly foams after mixing. So, the viscosity of the liquid when mixed, although enjoyable, leaves something to be desired.
That said, like a good salesman the seller points out that this mathca is unusual because of its concentration on being organic, even at the expense of whatever desirable flavor profile could be contributed by pesticides, lead, radiation etc. Perhaps this is an exaggeration... Nevertheless I take comfort in their emphasis on safety anyway.
It's definitely more affordable, being around $1 an ounce. Thanks for keeping other matcha brands honest...
So I recommend the value absolutely. But it you want the best of the best, I just don't know enough to give you a good answer.
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Reviewed in the United States on March 30, 2023
★★★★★ 5
Micro Ingredients Organic Matcha makes a good anytime tea.
Size: 32 Ounce (Pack of 1)
Micro Ingredients Organic Matcha Green Tea Powder delivers exactly what it promises: a clean, earthy, first-harvest matcha that balances approachability with authenticity. It’s a versatile and surprisingly smooth everyday matcha. The flavor leans toward earthy, grassy, and mildly nutty, with a gentle bitterness that feels natural rather than harsh.
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Reviewed in the United States on April 3, 2026
★★★★★ 5
Great. Just as good as fancy stuff But dose not pair with peppermint.
Size: 16 Ounce (Pack of 1)
If you're making Macha lattes or mixing the match with anything, this is perfect! No need to buy the expensive ceremonial level stuff unless you're drinking ONLY Macha. This is honestly perfect for everything.
Mix 2 of its provided spoonfuls with 1/2 cup of kettle hot water and stir, maybe even add more matcha until a bit thick, pour over a glass full of ice (should fill half the glass if full of ice) as the last half as milk with a pump of your favorite syrup. Mine is strawberry, my gf's is Vanilla. Peppermint was not good, though fyi.
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Reviewed in the United States on June 1, 2026