Replacement engine Home › Forums › Discussion Forum › Replacement engine This topic contains 0 replies, has 1 voice, and was last updated by Jaap Debokx 2 years ago. Viewing 1 post (of 1 total) Author Posts May 9, 2017 at 2:10 pm #745 Jaap DebokxParticipant Hello, interested in any information about a suitabld replacement engine for a 455 olds in a 71 Cortez? Looking for better fuel consumption…….obviously gearbox is required to change as well. Thank you for any insights…. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic.