G Force Performance Swap Block Mock Up TH400 Transmission

• Our patent-pending tab-and-slot version of the 10L90 Swap Blockâ„¢ Transmission Mock Up Block provides accurate transmission mounting and yoke positions.
• This unique design is lightweight and comes disassembled for ease of shipping and storage.
• One tool accomplishes accurate placement of a TH400 transmission found in GM cars and trucks from 1964-1990.
• This mock up Transmission has a rear mount plate designed around the short tail TH400, but if a long tail is needed, you can bolt a tail shaft to the rearmost upright plate.
• Easily positioned by hand, there is no need to bench-press a heavy transmission into place for fitment and fabrication of Crossmember, etc.
• Save time and money and work more safely.
• Durable steel construction resists heat from welding, so unlike foam blocks, custom crossmembers can be fabricated close to the block.

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