Speed Engineering LS Rectangular-Port Single-Plane Mid-Rise Intake Manifold
Cast and machined aluminum single-plane mid-rise intake manifold for Gen IV LS rectangular-port cylinder heads, including LS3 and L92 applications. The 4150/4160 square-bore flange is suited to carbureted or throttle-body style race combinations.
Features
- Cast and machined aluminum construction
- Gen IV rectangular-port design
- 4150/4160 square-bore flange
- Approximately 2,500 to 7,000 rpm operating range
- 3/8-inch vacuum port
- Hardware and O-ring gaskets included
- Suited to centrifugal supercharger, turbocharger, or nitrous combinations
Fuel-system requirement: Factory fuel rails do not fit. Speed Engineering billet fuel-rail kit 26-1085 is required. Match the rail configuration to the injector length used in the build.
Race-use notice: The manufacturer designates this as a competition-only product. Verify all applicable emissions and vehicle-use laws before installation.
Processing & Shipping Overview
Processing occurs before shipping.
Most in-stock items typically process within 2–3 business days before shipment or pickup. Expedited shipping options affect transit time after an order ships and do not speed up processing.
Made-to-order, special-order, vendor drop-ship, and freight items require additional processing time before shipping. Any extended lead times will be noted on the product page when applicable.
For the most up-to-date order status or lead time questions, please contact sales@smgspeed.com or use live chat during business hours.