Speedcafe.com understands that the lottery took place in the last hour or thereabouts, for the initial seven engines which will be dispatched to the teams campaigning cars with a Bowtie badge.
As was the case for the Ford squads, the initial tranche represents one engine for every two Camaros in the field.
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With the move to a common engine supplier for the respective Gen3 models, Supercars has taken the step of randomising the allocation to ward off any suggestions of favouritism.
The same applies with respect to KRE Race Engines, Triple Eight Race Engineering, and the 14 Chevrolets on the grid.
Ultimately, every team will receive two engines per entry (car), meaning a total across the field of 22 for the Mustangs and 28 for the Camaros.
The Ford engine is a 5.4-litre Coyote-derived unit with double overhead cams, while the Camaro's 5.7-litre powerplant continues to be of pushrod configuration, as were the 5.0-litre engines which sat in the Falcons (later the Gen2 Mustang) and Commodores.