1970 Dodge Challenger Convertible 383 / 727 Automatic. The Challenger is in for basic maintenance and sound control insulation. This car has the 'SlapStick' shifter and it is a lot of fun. No frills here, Just strong 383 performance all through the RPM range. 383 HP / 727 automatic / 390 gears / Convert This vehicle arrived for basc service and electrical work. I reomved the dashboard, inst alled dsynamat, and repaired all things electrical along the way. The engine had a noidy valvetrain, but after some carb re-engineering and a v=few oil changes., the noise sub-sided. Up next was a gear change from 3:23 to 3:90 for a little more umph.