Holley EFI- 300-621BK Modular Ultra Lo-Ram EFI manifold for LS1/2/6
Ultra Lo-Ram Manifold Kit - LS1/2/6-Black Finish
The Holley LS1/2/6 Ultra 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 Ultra 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. The 300-621 Ultra 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.
- 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)
Brand | Holley EFI |
---|---|
Color | Black |
Construction | Cast |
Emission Code | 3 |
Engine | GM LS1/LS2/LS6 |
Finish | Black |
Flange Style | EFI |
Front Height | 6.86" height with throttle body adapter |
Fuel System Type | EFI |
Injector Quantity | Single |
Inlet Location | Front |
Manifold Type | Ultra Lo-Ram |
Product Type | Intake Manifold |
Recommended Use | Forced Induction |
RPM Power Band | 3500-8000 RPM |
Warranty | Limited 90 Day |
UPC | 090127079676 |
Part Number | 300-621BK |