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Ships within 48 hours · Estimated delivery Aug 30 - Sep 4
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Description
Lo-Ram Manifold Base and Fuel Rails Single Fuel Injector GM LS3/L93 300-670BKTop feed Single Injector manifold and fuel rails only Black Finish Features: Designed for GM LS Gen III and IV engines equipped with GM LS3 L92 cylinder heads Provides best performance for forced induction (supercharged or turbocharged) engine applications with peak power at 7000 8000 rpm, depending on the application Dual injector, separate passage, high volume fuel rails with mounting hardware, dual fuel capable, 8 AN o ring ports Modular LS3 Lo Ram
Top-feed Single Injector manifold and fuel rails only-Black Finish
Features:
- Designed for GM LS Gen III and IV engines equipped with GM LS3/L92 cylinder heads
- Provides best performance for forced induction (supercharged or turbocharged) engine applications with peak power at 7000-8000 rpm, depending on the application
- Dual-injector, separate-passage, high-volume fuel rails with mounting hardware, dual-fuel capable, 8 AN o-ring ports
- Modular LS3 Lo-Ram design allows customization for user desired configurations
- Modular design allowing the use of the included top-feed plenum entry
- Available with both as-cast satin and black power-coat finishes
- High volume fuel rails for eight and sixteen injector configurations. Mounting hardware included with 3/4-16 O-ring ports (8 AN)and mounting hardware included with 3/4-16 O-ring ports (8 AN)
Specs:
| Basic Operating RPM Range | 3500-8000 RPM |
|---|---|
| Brand | Holley EFI |
| Category Filter | Intake Manifolds |
| Clearance Category | Intake Manifolds |
| Color | Black |
| Construction | Cast |
| EGR Port | No |
| Emission Code | 3 |
| Engine | GM LS3/L92 |
| Finish | Black |
| Fuel System Type | EFI |
| Grade Type | Performance |
| Injector Quantity | Single |
| Inlet Location | Top |
| Intake Port Gasket(s) Included | No |
| Manifold Type | Lo-Ram |
| Material | Aluminum |
| Nitrous Bung(s) Included | No |
| Plenum Finish | Black |
| Product Type | Intake Manifold Base |
| Recommended Use | Forced Induction |
| Removable Runners | No |
| RPM Power Band | 3500-8000 RPM |
| Single Or Dual Plane Type | Single Plane |
| Throttle Body Included | No |
| Warning | California Proposition 65 |
| Warranty | Limited 90 Day |
Application:
| Year | Make | Model | Submodel |
|---|---|---|---|
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
4.3 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 5
The PERFECT Pillow!
Size: Queen Size
As I grow older, I was waking up with a sore neck. I tried a variety of pillows including feather, fiberfill and memory foam, but Latex was the best by far. Now to find the perfect Latex pillow... First I tried Dunlop Latex but found it too firm. Then I tried 2 different Tatalay Latex. One was soft until my head sunk down, then it became too firm. The second one, this one, was PERFECT. Soft but not too soft, and my head never bottoms out. Feels like my head is floating on air. And no rubber odor. There is a slight scent initially but it isn't unpleasant. I've been sleeping on this pillow for 10 days now and have never slept better. I don't find that it's any warmer than any other pillow. The pillow comes with a nice soft stretchy cotton cover.
(I purchased a spare pillow for the future).
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Reviewed in the United States on July 15, 2025
★★★★★ 4
Very Nice for Back Sleeping but Not the Side
Size: Queen Size
For laying on the back,this pillow is dreamy.Some support,but also very soft.Side sleeping feels different.It's like my face being on a balloon,held there,without much ability to move.
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Reviewed in the United States on April 3, 2025
★★★★★ 5
Best pillow I have had in all my life!!
Size: Queen Size
This pillow gave me the best sleep that I have had in years! It is perfect in height, softness, and size!!! I would buy this pillow for the rest of my life! It is that good❤️
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Reviewed in the United States on March 15, 2026
★★★★★ 1
Strong latex odor hasn't dissipated in 3 weeks and counting!!
Size: Standard Size
Unusable!!!! Strong latex order hasn't dissipated in 3 weeks and counting! I have put the pillow outside to air each day for weeks and tried multiple types of covers with no abatement. The return window has closed but a, seeking refund for defective product.
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Reviewed in the United States on May 3, 2026
★★★★★ 5
Comfortable
Size: Queen Size
I was pleasantly surprised by how comfortable this latex pillow is! It provides just the right amount of support without feeling too firm, making it perfect for someone like me who prefers a balanced feel. Unlike memory foam pillows, which can sometimes feel too dense, this one offers a gentle bounce that adjusts to my head and neck naturally.
One of the things I appreciate most is how well it maintains its shape throughout the night. No matter how I shift positions, it doesn’t flatten out or lose support. Another bonus is that it stays cool—I haven’t experienced any overheating, which is a common issue with other pillows I’ve tried.
There was a faint latex scent when I first unboxed it, but after leaving it out to air for a short while, it completely disappeared. Overall, this pillow is a fantastic option for anyone looking for something supportive yet comfortable, and I’d definitely recommend it to others!
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Reviewed in the United States on February 20, 2025