Mock Up Block - Gen V LT

The G Force Crossmembers Mock Up Block – Gen V LT is a precision-engineered steel engine block mock-up designed specifically for GM Generation V LT-series engine platforms. This heavy-duty mock-up block serves as an essential tool for engine bay mock-ups, component fitment testing, and pre-assembly planning before committing full resources to an actual engine installation. The natural steel construction delivers authentic weight and dimensions that match real LT-series blocks, making it indispensable for builders, shops, and fabricators working on modern GM performance builds.

At 28.73 pounds and measuring 18.5 × 4.5 × 24 inches, this mock-up block replicates the true footprint and mass distribution of an LT-series engine. The accurate dimensions allow builders to verify header clearance, intake manifold fitment, accessory placement, and engine bay layout without risking damage to a production engine block. The solid steel construction ensures durability through multiple fit checks and positioning iterations, making it a cost-effective solution for shops that frequently work with LT-powered projects or custom engine installations.

This product targets professional builders, fabrication shops, custom engine installers, and serious enthusiasts who need to validate engine placement and ancillary component locations before final assembly. Whether you're designing custom engine mounts, verifying turbocharger or supercharger clearance, or testing custom intake and exhaust manifold routing, a mock-up block eliminates guesswork and expensive rework. The Gen V LT platform continues to dominate modern performance and restomod builds, making accurate fitment verification a practical necessity for high-end projects where precision matters.