While a cross-town collaboration between rival pony car builders Ford and GM seems improbable on the surface, cost savings, shortages of engineers and more stringent regulations are making the tie-up more of a necessity.

The two companies cooperated on development of the six-speed transmissions found in the Ford Escape and Fusion, and the Chevrolet Equinox and Malibu, but sharing gearboxes is not something that fiercely loyal Mustang and Camaro drivers would have ever envisioned.

That is about to change.

Beginning in 2017, the Camaro ZL1 will be the first of eight GM vehicles to be equipped with GM’s 10-speed Hydra-Matic automatic transmission. The same transmission was recently captured in a screenshot of Ford’s dealer parts database and is expected to be used for the 2017 F-150 pickup truck and some Mustang models beginning in 2018.

Jointly developed between Ford and GM beginning in 2013, the 10-speed transmission will share a number of components but will be built, integrated, programmed and tuned independently.