Engine / Transmission, Roll Cage Jeff’s ’66 Dodge Coronet 13th October 2017 billadeau-speed For Jeff’s Coronet we built a 440 with Edelbrock Heads, an hydraulic cam and forged pistons. A nitrous oxide system and a six point roll bar were also installed. The car ran a best ET of 12.1 without nitrous and 10.9 with.