Mock Up Block - SBC

The G Force Crossmembers Mock Up Block for Small Block Chevy is a steel engine block mock-up designed for builders, fabricators, and engine shop professionals who need accurate dimensional reference during vehicle design, frame layout, or prototype development. This full-size mock-up delivers precise fitment verification without the cost and weight of an actual running engine, making it essential for custom frame construction, engine bay mock-ups, and suspension clearance testing.

Weighing 26.73 lbs and measuring 18.5 x 4.7 x 24 inches, this small block Chevy mock-up provides accurate overall dimensions and weight distribution characteristics critical for frame design validation. Fabricators use mock-up blocks during the planning stages to verify crossmember clearance, establish engine mounting points, and ensure proper hood fit—all before committing to expensive metalwork or engine acquisition. The finish allows for marking, clamping, and repositioning throughout the layout process without concern for cosmetic damage.

Whether you're designing a custom hot rod, verifying clearance in a tube frame chassis, or establishing engine placement in a restomod project, the mock-up block allows hands-on spatial verification. Custom fabricators and engine shops rely on these blocks to reduce rework and prevent costly fitment errors. This tool is invaluable for ensuring that all components fit together seamlessly before any permanent modifications are made.