Adapter Plate - GM LS T/B to 90mm Opening

The Adapter Plate - GM LS T/B to 90mm Opening from Edelbrock (MPN 2737) is a precision throttle body adapter engineered for LS engine swaps and high-performance fuel injection conversions. This adapter solves a common compatibility challenge when retrofitting modern LS powerplants into vehicles with older or non-OEM intake manifold designs. Whether you're building a restomod, swapping an LS into a classic chassis, or upgrading your engine bay with aftermarket fuel management, this adapter plate bridges the gap between your LS throttle body and 90mm intake openings with bolt-on simplicity.

Constructed from cast aluminum in natural finish, the adapter features a robust design that handles the thermal and mechanical demands of LS engine operation. The precise machining ensures a leak-free seal and proper throttle body alignment, critical for smooth idle quality, accurate fuel injection tuning, and consistent air-fuel ratios under load. At 0.66 lbs, the lightweight design minimizes parasitic weight while maintaining structural rigidity. The compact footprint (6.75 x 6.45 x 9.35 in) allows installation in tight engine bays common to retrofit applications, making it an ideal choice for fabricators and performance builders working with space constraints.

LS engine enthusiasts, street rodders, and swap specialists rely on this Edelbrock adapter to achieve proper fuel delivery geometry without expensive custom manifold fabrication. It's particularly valuable for those using Edelbrock elbow manifolds or aftermarket intake designs that feature 90mm openings. Installation is straightforward with standard fasteners, and the natural aluminum finish resists corrosion while allowing easy integration into custom intake systems. This is a must-have component for any serious LS conversion project where bolt-on reliability and proper air management are non-negotiable.