Posted July 21, 200024 yr comment_623 has anyone succesfully swapped a auto with five speed in a 240. if so, i'de like to know what year transmission would work, and everything i will need to get from the manual car. Also any links would be nice. Thanks, doug Link to comment https://www.classiczcars.com/forums/topic/300-auto-to-five-speed-in-a-73-240/ Share on other sites More sharing options...
December 17, 200123 yr comment_1447 Doug, I think you can use any 5 speed thru 83, you need the trans, mount, pedal, new holes in your firewall and all the linkage, and backup light stuff, there's an article about where the shifter comes out on this site, but I believe if you use a Z trans as opposed to a 510 it will line right up. I think I have all that stuff at my wrecking yard by the way. Link to comment https://www.classiczcars.com/forums/topic/300-auto-to-five-speed-in-a-73-240/#findComment-1447 Share on other sites More sharing options...
June 24, 200222 yr comment_9312 Doug, I asked the same question a few months back. Ken laid out the part you need. I was told that the 5sp from the early 280's (up thru '78) had gearing that matched up better with the early 240s for what that's worth. I was also told that most 5sp trannys need to be checked out before installing them. Apparently, folks drive around in 5th gear and blow out some important bushings or bearings. Now a used 4speeds is reportedly less prone to this damage. Food for thought. Good luck partner! Link to comment https://www.classiczcars.com/forums/topic/300-auto-to-five-speed-in-a-73-240/#findComment-9312 Share on other sites More sharing options...
July 25, 200222 yr comment_11323 go to this site for a run down on what is involved by someone who has done it before.http://www.mame.mu.oz.au/salman/gearbox_conversion.htmlgood luckeric Link to comment https://www.classiczcars.com/forums/topic/300-auto-to-five-speed-in-a-73-240/#findComment-11323 Share on other sites More sharing options...
May 30, 200321 yr comment_39223 Doug , if you do the swap I am looking for a flexplate with a good ring gear . If you have one for sale let me know. Thanks Gary Link to comment https://www.classiczcars.com/forums/topic/300-auto-to-five-speed-in-a-73-240/#findComment-39223 Share on other sites More sharing options...
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