Holley EFI - Holley Lo-Ram Manifold Base and Fuel Rails Single Fuel Injector GM LS3/L92 300-670
Type: Intake Manifold Base | Fits: GM
The Holley LS3 Lo-Ram intake manifold kits are designed for GM LS Gen III and IV engines equipped with GM LS3/L92 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 low height to aid the packaging of a plenum-mounted air-to-water intercooler in a top-feed configuration. Additional manifold designs include both single and dual injector options. 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)
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
- Low height to aid the packaging of a plenum mounted air-to-water intercooler in a top-feed configuration
- 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: Intake Manifolds
- Color: Silver
- Construction: Cast
- EGR Port: No
- Emission Code: 3
- Engine: GM LS3/L92
- Finish: Silver
- Fuel Injectors Included: No
- Fuel Rail(s) Included: Yes
- Fuel System Type: EFI
- Gasket Or Seal Included: Yes
- 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: Natural
- 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
- Warranty: Limited 90 Day
Tech Resources:
Manifold base height- 5.67"
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Important Notices
- Professional Installation Recommended
These parts should be installed by qualified professional mechanics. Improper installation can cause performance issues or vehicle damage. Unless a product page explicitly states otherwise, installation instructions are not included. Components are designed for users with solid mechanical knowledge, and minor adjustments or modifications may be required for proper fitment. Returns or refunds cannot be accepted due to difficulty completing an installation or the absence of instructions. - Warranty Impact
Use of these parts may void your vehicle’s factory warranty. Confirm with your vehicle manufacturer before purchase and installation. - Limitation of Liability
JS Speed is not responsible for damage, failures, or issues arising from the use or installation of these products. - Product Images
Images are for illustration only and may differ from the actual product due to manufacturer updates or improvements. - No Performance Guarantees
While these products are designed to enhance performance, JS Speed does not guarantee specific performance results.
