Polished Aluminum LS Carbureted Intake Manifold for Cathedral Port Heads | 1,500–6,500 RPM
Convert a compatible GM LS-style engine to a carbureted setup with this polished aluminum intake manifold, designed for LS1, LS2, LS6, and other LS Gen III/IV engines equipped with cathedral port cylinder heads.
Featuring a cast aluminum construction, polished finish, and 4150 square-bore flange, this manifold has an operating RPM range of 1,500–6,500 RPM. Its optimized runner layout and consistent cross-sectional area are designed to support a broad torque curve and engine performance across this range.
Suitable for carbureted or throttle-body EFI street applications, the manifold features a lightweight casting design with consistent wall thicknesses. Mounting hardware and gaskets are included.
Key Features
- LS-to-Carburetor Conversion: Converts compatible LS-style engines to a carbureted setup.
- Broad LS Compatibility: Designed for GM LS Gen III/IV engines with LS1, LS2, or LS6-style cathedral port cylinder heads.
- 1,500–6,500 RPM Operating Range: Designed to support performance throughout this RPM range.
- Polished Cast Aluminum: Aluminum construction with a polished finish.
- 4150 Square-Bore Flange: Designed for a 4150 square-bore carburetor flange configuration.
- Optimized Runner Layout: Designed to support a broad torque curve and engine performance.
- Efficient Casting Design: Lightweight construction with consistent wall thicknesses.
- Application Versatility: Suitable for carbureted or throttle-body EFI street applications.
- Installation Components Included: Comes with mounting hardware and gaskets.
- Interchange Reference: Interchanges with part number 300-130.
Product Specifications
| Specification | Details |
|---|---|
| Product Type | LS Carbureted Intake Manifold |
| Engine Platform | GM LS Gen III/IV |
| Cylinder Head Type | Cathedral port |
| Compatible Engine Styles | LS1, LS2, LS6, and other compatible LS-style engines |
| Material | Cast aluminum |
| Finish | Polished |
| Flange Type | 4150 square bore |
| Operating RPM Range | 1,500–6,500 RPM |
| Fuel System Applications | Carbureted or throttle-body EFI street applications |
| Interchange Part Number | 300-130 |
| Included Components | Mounting hardware and gaskets |
Compatibility & Fitment
Designed for compatible GM LS Gen III and Gen IV engines equipped with LS1/LS2/LS6-style cathedral port cylinder heads.
Before ordering, verify your engine generation, cylinder-head port configuration, and intended carburetor or throttle-body EFI setup.
Frequently Asked Questions
| Question | Answer |
|---|---|
| What is this intake manifold designed to do? | It converts compatible LS-style engines to a carbureted setup. |
| Which engines does it fit? | LS1, LS2, LS6, and other compatible GM LS Gen III/IV engines with cathedral port cylinder heads. |
| What is the operating RPM range? | 1,500–6,500 RPM. |
| What material is it made from? | Cast aluminum with a polished finish. |
| What type of flange does it use? | A 4150 square-bore flange. |
| Can it be used with EFI? | It is described as suitable for carbureted or throttle-body EFI street applications. |
| Does it include mounting hardware and gaskets? | Yes, both mounting hardware and gaskets are included. |
| What part number does it interchange with? | 300-130. |
Fitment Reminder
Confirm that your engine uses compatible LS Gen III/IV cathedral port cylinder heads before purchasing. Engine family and cylinder-head port configuration are key fitment considerations.
