RexSeven SuperDork
5/13/11 6:48 p.m.

I have a friend on another forum whose boyfriend owns a 2005 Crown Vic LX (non-P71). The transmission died recently. The shop is telling her that her car has a rare transmission that will be hard to find and expensive because her car was built in Canada and is built to pass CA emissions standards. I think he's feeding her a load of bull. I've suggested finding a P71 transmission, but she's concerned about how it will behave in a non-P71- specifically, if the ECU and transmission will talk to each other, if the shifts are violent, and if there are any gearing differences between civvie and P71 slushboxes.

Javelin GRM+ Memberand SuperDork
5/13/11 7:59 p.m.

All P71's (and all Panther chassis cars period) were built in Canada, so yeah, that's a bunch of hog wash. The ECU should talk fine, but I would recommend sticking with an 03-07 trans just in case. I don't see why not to use a P71 trans, it's the same unit just a little beefier. Mine shifted soft until I upgraded it with the shift kit and tuner.

RexSeven SuperDork
5/13/11 8:28 p.m.

Thanks, I'll let her know!

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