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#425300670
Holley 300-670 LS3 Manifold, Top-Feed, Rails, Single Inj, Satin
- 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
$699.95
/kit
Factory Shipped
$749.95
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Product Summary
EFI Fuel System Type, Multi-port Injection Style, Satin
- 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
Key Specs
| MFG. Part # | 300-670 |
| Injection Style | Multi-port |
| Intake Manifold Type | Lo-Ram |
| RPM Range | 3,500-8,000 |
| Material Type | Cast Aluminum |
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Holley 300-670 Details
Top-feed Single Injector manifold and fuel rails only
The LS3/L92 Lo-Ram manifolds top-feed base intake manifold is designed with a low height to aid the packaging of a plenum-mounted air-to-water intercooler for forced induction (supercharged or turbocharged) engine applications with peak power at 7000-8000 rpm.
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
- 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)
Charts
Instructions (PDF)
Guides & Documents
CARB Warning
For race/ off road use or for use on pre-1966 vehicles.
CARB Warning
For race/ off road use or for use on pre-1966 vehicles.
Holley 300-670 Specifications
Holley 300-670 Specifications
| KEY SPECS | |
|---|---|
| MFG. Part # | 300-670 |
| Brand | Holley |
| Injection Style | Multi-port |
| Intake Manifold Type | Lo-Ram |
| RPM Range | 3,500-8,000 |
| Material Type | Cast Aluminum |
| GENERAL | |
| Fuel System Type | EFI |
| Finish | Satin |
| Color | Silver |
| EGR | No |
| Intake Section Included | Base Only |
| Base Finish | Satin |
| Base Material | Aluminum |
| Throttle Body Included | No |
| Injectors Included | No |
| Aftermarket Fuel Rail Required | Yes |
| Fuel Rails Included | Yes |
| Hardware Included | Yes |
| Runners Included | Yes |
| Runners Removable | No |
| Supplemental Bosses Cast-In | No |
| Supplemental Bosses Machined | No |
| Emission Code | 3 |
| Sold in Quantity | Each |
| GTIN Code | 090127100790 |
Ratings & Reviews
Ratings & Reviews
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