Available with single or dual injector provisions and a burst panel flange, the LS3 Ultra Lo-Ram intake manifold is designed for boosted combinations with hood clearance in mind. 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 Ultra Lo-Ram intake manifolds are designed for forced induction (supercharged or turbocharged) engine applications with peak power at 7000-8000 rpm depending on the application. The Ultra Lo-Ram plenum flange has a 105 mm opening to work with 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 configuration. The LS3 Ultra Lo-Ram is constructed to provide a very low profile modular intake manifold suitable for fabrication of special throttle body adapters or inlet ducts for custom installations. Available with single or dual injector provisions and a burst panel flange options.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 LS3/L92 cylinder heads•
  • Engineered for forced induction (supercharged or turbocharged) engine applications with peak power at 7000-8000 rpm depending on the application.
  • Low height to fit under a stock or mildly modified hood in the configuration
  • Front entry plenum flange allows design & fabrication of special throttle body adapters or inlet ducts for custom installations
  • Clears C6 Corvette cowls and hoods without modification
  • Available with single or dual injector provisions and a burst panel flange.
  • High volume fuel rails for eight and sixteen injector configurations. Mounting hardware included with 3/4-16 O-ring ports (8 AN)
  • Billet options for the top and throttle body adapters are available seperately.

Specs

Basic Operating RPM Range 3500-8000 RPM
Brand Holley EFI
Burst Panel Compatible Yes
Category Engine
Color Silver
Construction Cast
EGR Port No
Emission Code 3
Engine GM LS3/L92
Finish Silver
Flange Style EFI
Front Height 6.86" height with throttle body adapter
Front Maximum Height 6.86 IN
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 Front
Intake Port Gasket(s) Included No
Manifold Type Ultra Lo-Ram
Material Aluminum
Nitrous Bung(s) Included No
Part Type Engine Intake Manifold
Plenum Finish Natural
Product Type Intake Manifold
Recommended Use Forced Induction
Removable Runners No
RPM Power Band 3500-8000 RPM
Single Or Dual Plane Type Single Plane
Sub Category Cylinder Block Components
Throttle Body Bore Diameter 105 MM
Throttle Body Included No
Warranty Manufacturer's Limited 90 Day Warranty
UPC 090127100912
Part Number 300-680
SKU 300-680
Barcode # 90127100912
Brand Holley EFI
Shipping Weight 11.8100kg
Shipping Width 0.390m
Shipping Height 0.390m
Shipping Length 0.520m

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