Convert your compatible GM LS engine to a carbureted setup with this polished aluminum intake manifold, designed for LS Gen III and Gen IV engines equipped with LS1/LS2/LS6-style cathedral-port cylinder heads.
Featuring a 4150 square-bore carburetor flange and an optimized runner layout, this manifold is designed to support a broad torque curve across its specified operating RPM range of 1,500–6,500. Its cast aluminum construction combines a lightweight design with consistent casting wall thicknesses.
Suitable for carbureted and throttle-body EFI street applications, this manifold features a polished finish for a clean, performance-oriented engine bay. Mounting hardware and gaskets are included for installation.
| Feature | Details |
|---|---|
| Product Type | Carbureted Intake Manifold |
| Engine Compatibility | GM LS Gen III/IV |
| Cylinder Head Style | LS1/LS2/LS6 Cathedral Port |
| Operating RPM Range | 1,500–6,500 RPM |
| Carburetor Flange | 4150 Square Bore |
| Material | Cast Aluminum |
| Finish | Polished |
| Fuel System Applications | Carbureted or Throttle-Body EFI |
| Interchange Part Number | 300-130 |
| Included Components | Mounting Hardware and Gaskets |
| Question | Answer |
|---|---|
| Which LS engines does this manifold fit? | GM LS Gen III/IV engines equipped with LS1/LS2/LS6-style cathedral-port cylinder heads. |
| What is this intake manifold designed to do? | It converts compatible LS engine intake setups for carbureted applications. |
| What carburetor flange does it use? | A 4150 square-bore flange. |
| What is the operating RPM range? | The specified range is 1,500–6,500 RPM. |
| Can it be used with throttle-body EFI? | Yes, it is described for carbureted or throttle-body EFI street applications. |
| Are gaskets and mounting hardware included? | Yes, both are included. |
| What part number does it interchange with? | Part number 300-130. |
Fitment Note: This manifold is intended for cathedral-port cylinder heads. Confirm your engine generation, cylinder head port style, and fuel-system configuration before purchasing. Compatibility with other head styles has not been specified.
$132.00