Rear end setup - Diesel Truck Forum - TheDieselGarage.com
Thread Details Posted by hobbieman, this thread has received 7 replies and been viewed 682 times.

 
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post #1 of 8 (permalink) Old 02-17-2014, 12:47 PM Thread Starter
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Rear end setup

My 93 f350 has a 410 rear gears and I was wanting to put 355 in diff
How hard will that be?
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post #2 of 8 (permalink) Old 02-17-2014, 01:36 PM
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Originally Posted by hobbieman View Post
My 93 f350 has a 410 rear gears and I was wanting to put 355 in diff
How hard will that be?
No harder to do than any other axle but you will need to swap the differential case also. It is a different size 4.10 ratio and higher, (lower numerically, i.e. 3.55). You won't be really pleased pulling much weight with a 3.55 ratio; 3.73 is marginal, especially with the trans your truck has.

The question I seek an answer for is simply; why, or why not?
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post #3 of 8 (permalink) Old 02-17-2014, 03:00 PM Thread Starter
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Hummmm, I am finding that out. Just want a slower gear. To save on fuel. I pull my boat
To Palestine. Thanks a heeeeep.
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post #4 of 8 (permalink) Old 02-17-2014, 03:01 PM Thread Starter
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Is that way for semi float rear or just full float?
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post #5 of 8 (permalink) Old 02-17-2014, 03:02 PM Thread Starter
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Or both
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post #6 of 8 (permalink) Old 02-17-2014, 03:12 PM
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Quote:
Originally Posted by hobbieman View Post
Or both
Same differential center section no matter the hub setup.

The question I seek an answer for is simply; why, or why not?
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post #7 of 8 (permalink) Old 02-17-2014, 03:13 PM Thread Starter
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Thanks backslap
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post #8 of 8 (permalink) Old 03-16-2014, 12:07 AM Thread Starter
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I finally got rid of the 410 gear and replaced it with a 355. A total different truck the 1st gear is amazing. Finally fuel mileage that's much better. And on the road wow great
Performance. I advise this, and it didn't cost much. About 300 and I used synthetic in
Case.
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