Out of stock
SKU: TRA2457
UPC: 086923024576
MPN: 2457
The 1/4in GM TBI Riser Plate from TRANS-DAPT is an essential spacer component designed for General Motors Throttle Body Injection engines undergoing intake manifold modifications. This riser plate elevates the throttle body assembly away from the intake surface, creating critical clearance for carburetor stacks, fuel injection upgrades, or custom intake manifold work. Whether you're building a high-performance street engine, restoring a classic GM platform, or adapting modern fuel delivery systems to vintage blocks, this precision-machined adapter solves the fitment challenges that arise during engine bay modifications.
Manufactured to exacting tolerances, the 1/4in GM TBI Riser Plate maintains a consistent 0.25-inch standoff height to ensure proper gasket sealing and component alignment without compromising intake port flow characteristics. The compact footprint (measuring 4.7 x 5.3 inches) and lightweight design (0.14 lbs) minimize rotational inertia and installation complexity while delivering the rigid support necessary for reliable throttle body operation under boost or high-RPM conditions. TRANS-DAPT's engineering ensures that vacuum line routing, coolant passages, and fuel supply connections remain accessible and unobstructed, critical factors when integrating aftermarket fuel systems or custom intake manifolds into OEM engine bays.
Engine builders, restoration shops, and DIY enthusiasts working with GM TBI platforms—including first-generation Camaros, small-block Chevrolet swaps, and LS conversion projects—rely on this riser plate to bridge incompatibilities between OEM and aftermarket intake systems. Installation is straightforward: remove the throttle body, install the riser plate with existing gaskets, and remount the assembly with included or OEM fasteners. This adapter is fully compatible with standard GM TBI throttle bodies and supports both carburetor-to-fuel-injection conversions and performance fuel system upgrades, making it an indispensable tool for any serious engine modification project.
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