5.0 in 92 Grand Marquis.

[sly]

my 88 has a wide ratio and 3.55 gears. Let's just say that launching it off the line is fun.

[86VickyLX]

Having ridden in a 92 Grand Marq with a stock rear and a 5.0 HO very recently, I can tell you its not that horrible. Not totally sure what rear is in that car, but its probably a 3.08. It could be a lot better, but I don't really think you would need a 4.11. That also tends to make it suck pretty bad on the highway, just in case you ever do leave Miami for some reason. I have a 3.55 in my car, and I've driven Scott's car with a 3.73. I think the 3.73 does pretty well, and it does fine on the highway too.

The Grand Marquis has a 3.08. 5.0s work well with the 3.55s. My vic has 3.55s. I would do 3.55s in the Grand Marquis as well.

[pivichot]

With a wide ratio, you can get by with even less rear gearing. Gander upon yonder chart:

http://www.grandmarq.net/vb/showthre...anny-tech-info

First gear effective with a wide ratio and a 3.27 is actually lower than a standard ratio and a 3.73. Second gear is fairly close.


Towncar drive shafts are different length.

Thanks for the link. My main goal is to have a final 1st gear ratio of somewhere of 10:1. I think I read that somewhere as ideal for a street car. Based on the graph I shouldn't go anything higher than 3.55 gears, since I want to build my transmission into a wide ratio AOD. At the same time I get a 10.08:1 final first gear ratio.

[pivichot]

my 88 has a wide ratio and 3.55 gears. Let's just say that launching it off the line is fun.

Decided on going with 3.55 gears. I just have a question in regards to the wide ratio. Where would you suggest finding info on a build because I am still not sure what is really needed for the AOD. I have searched with no luck.

[86VickyLX]

You need a late model aod case (90+) you'll use input and output shafts from aod. Front drum from late model aod and planetary gearset from 4r70w.

[gadget73]

The AOD parts guide I know of is here:

http://www.lincolnsonline.com/tech/00080.html


For more / other info, try clickclickracing. They're the AOD forum gurus.

[sly]

You will need a modified valve body to shift the wide ratio at the correct times or run the TV cable a little tight to set the 2-3 shift where you want it and then just know to let off a little for the 1-2 shift because it'll hold that one a little too long.

[pivichot]

You will need a modified valve body to shift the wide ratio at the correct times or run the TV cable a little tight to set the 2-3 shift where you want it and then just know to let off a little for the 1-2 shift because it'll hold that one a little too long.

I am actually going to buy a constant pressure unit from silverfoxtrans.com, I really do not want to mess up the setting with a rebuilt transmission.

[sly]