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Here you can see the old 4L60E transmission next to the new 4L80E. The 4L80E we installed was built by Finish Line Transmissions in Wood Dale, Illinois. It's their Level 3 Street Performance unit, which features a number of upgrades and enhancements to improve performance and durability. With torque converter, the new 4L80E tipped our scales at 254 pounds dry. By contrast, the 4L60E weighed in at 182 pounds wet.