Lightweight Design: Weighing only 17.5 pounds, the SoloSwap GM 4L80E Swap Mock Up Transmission is a fraction of a real 4L80E's weight, making it easy to handle and position without needing a jack or additional help. Compatibility and Versatility: Compatible with all GM small block, big block, and LS series Compatible with V8 engines, including SoloSwap mock up blocks, this mock up transmission is perfect for a wide range of swap projects. Durable Construction: Built from robust 12-gauge steel, the SoloSwap 4L80E ensures longevity and durability, outlasting traditional foam or plastic mock-ups, and can be stored either assembled or disassembled for convenience. Precise Fabrication Assistance: Ideal for confirming crucial aspects like driveshaft length, shifter location, and transmission mount placement for crossmember fabrication, this mock up transmission aids in precise project planning. Replica Accuracy: Meticulously designed to replicate GM's standard passenger car 4L80E 4-speed automatic overdrive, the SoloSwap transmission includes all necessary mounting holes and bellhousing patterns for accurate test fitting and fabrication. """12-gauge steel construction is strong, durable, and lasts unlike foam/plastic versions. Patent pending mock up transmission can be bolted to real or mock up engine block for fabrication purposes. SoloSwap 4L80E can be easily lifted into place by hand without using a jack or additional help. Complete SoloSwap mock up transmission weighs only 17.5 pounds. Perfect for confirming driveshaft length and shifter location. Provides transmission mount location for fabrication of crossmember. Ships and can be stored flat with simple assembly/disassembly steps. All hardware included for assembly of SoloSwap transmission. 2023 PRI Featured Products Showcase Award winner. Confirm Transmission Crossmember Placement, Driveshaft Length, And More The true spirit of hot rodding is building something that never came off an assembly line. Taking the best of what you can find and afford to build something you’re proud of. While this may have been the true definition of a hot rod back in the 1950s, it is still very much true today, though our budgets have simply grown to allow more modern drivetrain parts. Gone are carbureted Flatheads backed by a 3-speed TH350. Instead, today we have LS Compatible with V8s backed by 4-speed automatic overdrive transmissions. However, it still takes that hod rod spirit and ingenuity to get these newer engines and transmissions configured in your chassis of choice. Using a mock up engines and transmissions are real back savers when the engine or transmission has to come out several times for fabrication of mounts, headers, and more. Traditionally, building something with a transmission that was never meant to be installed in it would require the actual transmission, a floor jack or transmission jack, and a spotter or two keeping things in check while measurements were taken, parts tack welded, and so forth