GM LS Rectangle Port Carburettor Street Single Plane Intake Manifold Black
SKU: AF6240-6000
Reliable shipping
Flexible returns
GM LS Rectangle Port Carburettor Street Single Plane Intake Manifold - Black
Convert your GM LS engine from EFI to a non-EFI carburettor with Aeroflow Performance’s Street low-rise cast intake manifold. Designed for retro-fit applications, this street-ready, single-plane manifold delivers a precise, high-velocity air and fuel flow that enhances throttle response and mid-to-high RPM performance while keeping installation straightforward.
Built to suit GM LS Gen III and IV engines that use OE or aftermarket LS3 rectangle port cylinder heads, the non-EFI configuration accepts aftermarket 4150 square-bore carburettors with either manual or electric choke options. The black finish provides a clean, professional look that complements modern builds and classic hot rods alike.
Key Features
- Single-plane configuration for rapid throttle response and strong mid-range torque
- 4-barrel 4150 square-bore carburettor pad
- Rectangle port carburettor compatibility (LS3/L98 rectangle port heads)
- RPM operating range: 2500–7000
- Black finish for a sleek, versatile appearance
- Designed for EFI-to-carburettor retrofits with street performance in mind
Technical Specifications
- Carburettor pad: 4150 flange (square bore)
- Overall height (carb pad to bottom): 122 mm (check bonnet clearance)
- Port size: 1.15" x 2.50"
- 6 x 5/16-18" mounting holes
- 5/16-18" carburettor studs: 4
- 3/8" NPT port: 1
- O-Ring gasket: AF6233-5002
What’s Included
- 8 x Intake Manifold O-Ring Gaskets (AF6233-5002)
- 4 x M6 x 1.00mm Hex Screws (80 mm UHL)
- 6 x M6 x 1.00mm Hex Screws (50 mm UHL)
- 10 x M6 Flat Washers
- 1 x 3/8" NPT Steel Port Plug
Compatibility & Applications
Specifically designed to fit GM LS Gen III and Gen IV engines with either OE or aftermarket LS3 rectangle port heads. This manifold is intended for carburetted applications and is ideal for street machines, retrofitted builds, and performance-minded enthusiasts seeking reliable non-EFI carburation on GM LS engines.