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How to Swap a 6R80 Transmission into a Fox-Body Mustang

By January 28, 2019 March 5th, 2019 No Comments

Drag Week competitor Mike Jovanis’ dropped a Coyote 5.0 under the hood of 1989 Mustang LX—complete with a VMP Gen 2R supercharger—and began to look for an Overdrive solution. “I really wanted to keep this car all-Ford, so getting a 4L80 or 4L60 wasn’t really an option,” said Jovanis. “The car has a Ford Performance wiring harness, so to add a 6R80 and be able to control it through the ECU is pretty easy.”

GForce Performance Engineering was tasked with building the custom driveshaft—this car measures 52-inches from the face of the 6R80 transmission to the Strange 1350 pinion yoke. Due to the output, Jesse Powell of GForce Performance Engineering suggested a 3.5-inch diameter aluminum driveshaft instead of a 4-inch diameter that they do for higher output combinations.

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