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post #1 of 6 (permalink) Old 11-02-2006, 05:47 PM Thread Starter
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Tail Casing HELP

does anyone know what

47
W


means on the tail case of a transmission?
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post #2 of 6 (permalink) Old 11-09-2006, 10:02 PM
 
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i know that the "W" means wide ratio, which is the gear ratio between the 1st to 2nd gear shift, the "4" means 4 speed, but im not sure what the "7" means yet
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post #3 of 6 (permalink) Old 11-10-2006, 02:24 PM
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4R70W is 4 speeds, rear wheel drive, 700 foot pounds of torque handling Wide ratio.

Does that have anything to do with
47
W
on the tailshaft? I don't know, I have never looked for markings or anything on one.

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post #4 of 6 (permalink) Old 11-10-2006, 02:36 PM
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Quote:
Originally Posted by Bangster
4R70W is 4 speeds, rear wheel drive, 700 foot pounds of torque handling Wide ratio...
Can anyone verify that 70=700 ft/lbs? I have heard many times that the higher the number, the stronger the tranny but this is the first time I have seen that the number actually means a specific rating.
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post #5 of 6 (permalink) Old 11-10-2006, 03:30 PM
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I can't find my reference. I looked it up and didn't stop at "it is on the Internet, that means it is true", but I don't remember where I found it.

4R100 is 1000
5R55W is 550

That is input to transmission from TC, so that is closer to 500 ft pounds engine torque output for the 4R70W

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97 Mark VIII LSC/Silver/Gray leather
97 Cougar 4.6 Sport/White Opalescent Tricoat Metallic /Gray leather down but not out?
89 Cougar LS 3.8/Oxford White/Gray velour/HG need replaced AGAIN
00 Grand Marquis LS/Vibrant White/Gray velour
63 Falcon 302/black and rust/shed isn't moving
82 F-150/Oxford White/dumb VV carb doesn't pass emissions
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post #6 of 6 (permalink) Old 11-10-2006, 03:46 PM
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this is from the f150 forums http://www.f150online.com/forums/sho...threadid=61285

check out reply #7

-Jason

2001 Lincoln Continental Limited
2006 Suzuki Boulevard M50
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