Mock Up Block - LS

The Mock Up Block - LS from G Force Crossmembers is a precision engine mockup tool designed for LS-platform engine builders, fabricators, and performance mechanics who need accurate dimensional reference during custom installation projects. This tool is essential for laying out a frame-off LS conversion, designing custom engine bay modifications, or planning crossmember and mount locations.

This mockup block replicates the core dimensional profile of LS engines, allowing you to verify crossmember height, oil pan clearance, accessory bracket interference, and cooling system routing before fabrication begins. Constructed to simulate the weight and handling characteristics of an actual engine, it aids in eliminating costly measurement errors during dry-fit assembly.

Fabricators performing non-traditional LS swaps into vintage platforms, custom builders, and restoration shops benefit most from this dimensional reference tool. Use it during the planning phase of engine bay redesigns, crossmember welding projects, or mid-engine conversions to ensure a precise fit.