Stock 3.55's - Ford Powerstroke Diesel Forum
6.4L Performance Parts Discussion What has or has not worked for you?

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post #1 of 3 Old 08-06-2013, 04:00 PM Thread Starter
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Stock 3.55's

These things just dont work for me at the speeds we travel and the weight i tow. Far too tall.

Whats involved in switching them out to 3.73? Do you have to change the crown and pinon gears or can you just change the pinon?

Does anyone make a 3.90? I think 4.10 would be a bit low.

2010 F350 Crew Cab Long Box
Spartan , S&B Intake 3.55
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post #2 of 3 Old 08-06-2013, 07:12 PM
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Are you talking about in the truck in your sig?

2010 CC/SB FX4 Lariat.. Tuned By Eric@IDP and Matt@Gearhead

Thinking about getting rid of the stock 6.7 turbo?
Check this out... and research before buying



http://www.powerstroke.org/forum/6-7...ustration.html

http://www.powerstroke.org/forum/6-7...round-2-a.html
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post #3 of 3 Old 08-07-2013, 08:04 AM Thread Starter
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No, I have a 2010 F350 CC long box.

I forgot to update my signature.

2010 F350 Crew Cab Long Box
Spartan , S&B Intake 3.55
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