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Old 09-04-2019, 06:43 PM   #1
Method Maker
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Default 2.5l vs. 2.7l (Swap Questions)

Looking for answers on if a 2.7l from an '87 Legend coupe would bolt into an '87 sedan with a 2.5l with no major problems other than needing a different computer. I'm aware it became an option to have it in the sedans from '88-'90.

The oil pump went out at high speed on my way up to Seattle. Engine now knocks badly but stills runs. Looking into engine rebuild kits, only found a decent one from Clegg. Also looking into swapping in a 2.7l if at all possible. From what I know, the 2.7l is just bored out but everything else remains the exact same including the transmission and engine mounts but I am not completely sure.

Please let me know if you have any information on this! I wanna keep her going even if it takes some time and money to do so!
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Old 09-18-2019, 04:05 PM   #2
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It will bolt up yes, however the easiest way to go about this swap would be to use the 2.5's front cam gear, cam position sensor, distributor, and ECU. Otherwise you're in for a treat to swap all the 2.7 wiring and vacuum box over. Please note that with this method, the butterfly valves inside the 2.7 intake will not function and you lose a bit of top end power.
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Old 09-30-2019, 11:39 AM   #3
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Thanks, seems like almost nobody knows about the first gen Legend drive train. Do you know if the transmission mounts are the exact same when bolting to a 2.7l from a 2.5l? Mine's a 5-speed.
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Old 10-01-2019, 05:33 PM   #4
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Quote:
Originally Posted by Method Maker View Post
Thanks, seems like almost nobody knows about the first gen Legend drive train. Do you know if the transmission mounts are the exact same when bolting to a 2.7l from a 2.5l? Mine's a 5-speed.
You can check part numbers between the two engines/transmissions at Rock Lobster or other auto parts web sites.

https://www.rockauto.com/
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