LSX HR 103mm Intake Manifold LS7 Rect.Port

The FAST Electronics LSX HR 103mm Intake Manifold for LS7 rectangular port applications delivers optimized flow characteristics for high-performance LS-series engine builds. Engineered for tunnel ram configurations, this intake manifold combines a 103mm throttle body flange with rectangle port geometry designed to maximize air velocity and fuel distribution across the cylinder head intake runners. The manifold ships complete with fuel rails included, eliminating the need for sourcing compatible rail components separately.

Constructed from durable black plastic, the LSX HR 103mm manifold weighs 24.63 lbs and measures 16.25 x 14.15 x 26.6 inches, making it suitable for confined engine bay installations common in performance street and competition applications. The rectangular port design works specifically with LS7 heads, which differ from traditional LS1/LS2/LS6 port patterns. FAST Electronics designed this manifold to maintain port-matching alignment with LS7 cylinder head intake runners, reducing flow disruption at the critical interface between manifold and head. The included fuel rail setup accounts for LS7-specific fuel delivery requirements, ensuring proper injector placement and fuel pressure distribution.

This manifold serves builders focused on LS7-powered street machines, bracket racing platforms, and dedicated performance vehicles where maximum flow and heat management are priorities. The tunnel ram configuration accommodates dual four-barrel carburetor or EFI throttle body stacking, common in entry-level nitrous oxide applications and naturally aspirated competition builds. Buyers selecting an LS7 intake manifold must verify head casting compatibility before ordering, as rectangular port LS7 castings are not interchangeable with earlier LS-series port patterns.