In 1970 the AMX was built tougher with its new 360 cubic inch V-8 that developed 290 horsepower. Other options included a 390 cubic inch V-8 engine with 325 horsepower A four speed transmission on the floor was standard and a Hurst shifter was also standard.
AMC built only 4,116 1970 AMX for sale. On the outside the AMX got new rear lamps and a restyled front end shared with Javelins. The grille was flush with the hood and a redesigned bumper housed square parking lamps. A horizontally divided, crosshatched grille had four very prominent bright horizontal moldings. The grille also incorporated circular rally light. The bumper even included an air scoop to cool the front brakes. The restyled hood had a large ram-induction scoop and the 1970 AMX looked more like its pony car rivals. Factory price for the 1970 AMC was $3,395.