This EFI single-plane, split-design race intake manifold fits GM LS Gen III/IV engines equipped with LS1/LS2/LS6 style cathedral-port cylinder heads. The split feature allows disassembly for direct access to internal plenum and port surfaces for custom porting, with captured O-ring seals and shoulder bolt locators for simple, precise reassembly. Billet fuel rails and mounting hardware are included.
Specifications:
- Engine: GM LS1/LS2/LS6
- Manifold Type: Split Single Plane
- Flange Style: 4150 Square Bore
- Fuel System Type: EFI
- Basic Operating RPM Range: 3500-8000
- Material: Aluminum
- Plenum Finish: Natural
- Throttle Body Bore Diameter: 3.6 inch
- Vacuum Ports: Yes (two 1/8 NPT, one 1/4 NPT, one 3/8 NPT at the carb flange)
- Warranty: Manufacturer's Limited 90 Day Warranty
- Part Number: 300-255
The manifold includes billet fuel rails and rail mounting hardware, and it's designed for 4150-style square bore carburetors or throttle body EFI up to 1-3/4 inch diameter throttle bores.
FAQ
What cylinder heads does this intake fit?
It's designed for GM LS Gen III/IV engines with LS1/LS2/LS6 style cathedral-port cylinder heads.
Does this manifold include fuel rails?
Yes, billet fuel rails and rail mounting hardware are included.
What RPM range is this manifold designed for?
It's intended for 3,500-8,000 RPM race applications.
What does the split design offer?
It allows the manifold to be disassembled for direct access to the internal plenum and port surfaces, making custom porting and matching much easier.
What finish is this manifold available in?
This version has a natural aluminum plenum finish.
