2001 7.3 cc rear end ratio - Ford Powerstroke Diesel Forum
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post #1 of 8 Old 07-28-2006, 11:29 AM Thread Starter
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2001 7.3 cc rear end ratio

does anyone have info on stock axle ratio?? while on freeway at 70mph I show the tach at 2.2kRpm's it seems in my 04 PS 6.0 the rpm's were lower Mark the tag reads 3s409 is this in fact a 410 posi ??? or not

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post #2 of 8 Old 07-28-2006, 05:27 PM
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Look on the diff cover. One of the bolts will have a tag on it. On the bottom left of the tag if it was facing properly, it will say the gear ratio....for example...... 3 73 or 3L 73 for a posi.....but im guessing with that kind of RPM's youve got a 4.10.....
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post #3 of 8 Old 07-28-2006, 05:29 PM
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I second that!

My 250 runs exactly 2000rpms at 70mph. 3.73 gears.
post #4 of 8 Old 07-28-2006, 06:31 PM
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ive got 3.73's and at 70 im turning about 2050-2100

brian

05 f350 crew, longbed, 4x4, 68k, lariat


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post #5 of 8 Old 08-01-2006, 07:09 PM Thread Starter
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......................................
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post #6 of 8 Old 08-01-2006, 07:10 PM Thread Starter
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Quote:
Originally Posted by Burtonch
does anyone have info on stock axle ratio?? while on freeway at 70mph I show the tach at 2.2kRpm's it seems in my 04 PS 6.0 the rpm's were lower Mark the tag reads 3s409 is this in fact a 410 posi ??? or not
tag reads 3s409 is this in fact a 410 posi ??? or not
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post #7 of 8 Old 08-01-2006, 07:13 PM
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what else does the tag say, thats not the numbers that would tell gear ratio...
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post #8 of 8 Old 08-01-2006, 07:19 PM Thread Starter
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OK here it is L73 105 ok20
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