1988 Ford Crown Victoria AOD Swap

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PARRYTRA
  • MEMBER
  • 1 POST
I have a 1988 Ford Crown Victoria with a 5.0L and an automatic with overdrive, which recently the overdrive blew, and then the drive. It is definitely shot. I found a 1987 Lincoln Mark VII with a 5.0L H.O. motor and also has a Automatic overdrive tranny. I am not positive if the tranny is good yet, but if I find that it is, I was wondering if anyone could tell me if the Lincoln tranny will go into my Crown Vic without any modifications and how easy or hard would it be. I may even use the Lincoln Engine, maybe not right away, but I am wondering the same thing about that; how much trouble would it be to swap it into the Crown Vic? Any insight would be great.
Apr 15, 2006 at 5:19 AM
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LOSONE
  • ✓Experienced Mechanic
  • 1,616 POSTS
It shold bolt right in but you may have to change the tranny tail shaft and speedometer gear because the rear ends are different ratios
Apr 15, 2006 at 10:38 AM

Suggested Repair

The Lincoln automatic overdrive transmission should bolt into the Crown Victoria, but the tailshaft and speedometer gear may need to be changed because the rear-end ratios differ. Confirm the donor transmission is good before installing it.

Conversation Summary

The owner of a 1988 Ford Crown Victoria with a failed 5.0L automatic overdrive transmission asked whether a 1987 Lincoln Mark VII 5.0L H.O. engine and automatic overdrive transmission would swap in without modifications. The expert said it should bolt in, but the transmission tailshaft and speedometer gear may need changing because the rear ends have different ratios.

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