FAST Intake Manifold LSXHR LS1/2/6 (Cathedral Port)
FAST Intake Manifold LSXHR LS1/2/6 (Cathedral Port)
Description
The FAST LSXHR 103mm Intake Manifold is ideal for generating maximum power in boosted and naturally aspirated GM LS cathedral port engines. It ships with a set of tall removeable velocity stacks, however medium and short stack options can be purchased separately. This allows interchanging of the various runner lengths so racers can experiment with finding which combination makes the most power in their application. Its polymer construction is lightweight, very strong and virtually eliminates power-robbing heat soak that occurs with commonly available aluminum intake manifolds. The manifold has been optimized to make power from 5,000 to 7,500 RPM, with testing showing 20+ horsepower gains over competitor tunnel ram intake manifolds. The FAST LSXHR 103mm Intake Manifold is designed specifically with boosted applications in mind and is rated for up to 45psi of continuous boost pressure. The compound fuel injector angle aims the spray pattern for ideal atomization, resulting in maximum power production and superior drivability. Also included with the intake manifold are custom fuel rails and necessary hardware. A reversible top allows for forward- or firewall-facing throttle body installations. The intake manifold also features two nitrous nozzle bosses per runner for clean and easy direct port system installations. Additionally, its 103mm throttle body opening can be port matched up to 105mm.
Application Summary
Fits Cathedral Port 4.8, 5.3, 6.0 LS engines
Part Type
Engine Intake Manifold
Specifications
- Product Attributes - EGR
- No
- Product Attributes - UPC
- 00036584408451
- Product Attributes - Brand
- FAST
- Product Attributes - Notes
- Fits LS cathedral port cylinder heads.
- Product Attributes - Quantity
- Sold as a kit.
- Product Attributes - Part Type
- Intake Manifolds, Fuel Injected
- Product Attributes - Base Color
- Black
- Product Attributes - Product Line
- FAST LSXHR Intake Manifolds
- Product Attributes - Base Material
- Polymer
- Product Attributes - Plenum Finish
- Black
- Product Attributes - Plenum Material
- Polymer
- Product Attributes - Runners Included
- Yes
- Product Attributes - Runners Removable
- Yes
- Product Attributes - Injectors Included
- No
- Product Attributes - Fuel Injection Style
- Multi-port
- Product Attributes - Throttle Body Included
- No
- Product Attributes - Intake Section Included
- Complete
- Product Attributes - Throttle Body Bore Size
- 103mm
- Product Attributes - Engine Block Deck Height
- Standard deck
- Product Attributes - Basic Operating RPM Range
- 5,000-7,500
- Product Attributes - Manufacturer's Part Number
- 146303
- Product Attributes - Supplemental Boss Quantity
- Sixteen
- Product Attributes - Cylinder Head Configuration
- Cathedral Port LS1/LS2/LS6
- Product Attributes - Supplemental Bosses Cast-In
- No
- Product Attributes - Supplemental Bosses Machined
- Yes
- Product Attributes - Aftermarket Fuel Rail Required
- No
- Product Attributes - Multi-Port Fuel Rails Included
- Yes
Reference Information
| Brand Name/s | Fast |
|---|---|
| StreetFX SKU | fst146303 |
| SFX Item ID | 4084993 |
| Supplier Item Code | 4084993 |
| Manufacturer SKU | 146303 |
| Manufacturer UPC | N/A |
| Alternative References | LS1/2/6 |
Brochures
Compatibility
Fits Cathedral Port 4.8, 5.3, 6.0 LS engines
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