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2004 - 2008 Ford F150 General discussion on the 2004 - 2008 Ford F150 truck.

Suggested tire size for 4.6 engine?

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Old 12-23-2013, 12:11 PM
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Originally Posted by sdatrlp23
Anytime anyone plans on changing from stock height and tire size, they should also be budgeting to do a gear swap. That's something that's overlooked in almost all of the cases and is why there is any report of "power loss." It's extra stress on your transmission and you won't be doing yourself any favors by avoiding it. This isn't directed at anyone in particular, just some generalized information.
I don't plan on keeping my stock 3.55s. But for now it gets the job done, I never haul anything and usually drive highway so once I get up to speed I'm there for a while.
Old 12-23-2013, 12:21 PM
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Thanks for the great info. I do plan to pull a trailer with my car on it from time to time. Won't be hauling much other than that. Mostly in town traveling back and forth to work.
Old 12-23-2013, 04:58 PM
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I have a 4.6L (2WD) with 33's I wouldnt recommend going any bigger than that. The 4.6 is a very week engine compared the 5.4 thats in my moms Expedition.
Old 12-23-2013, 05:11 PM
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If I were to regear it would I have to do back and front diffs? What is the recommended gear to use?
Old 12-23-2013, 05:50 PM
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Originally Posted by Brian Peacoe
If I were to regear it would I have to do back and front diffs? What is the recommended gear to use?
What ratio do you currently have?
Typically 4.56 is used with 35's. You will have to do front and back diffs if you're 4x4.
Old 12-23-2013, 08:36 PM
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Well guys, thanks for all of the great info. I have decided on 325/60/18. They are basically the same size as 33/12.50s. I got the Falken Wildpeak A/Ts. Still deciding if I want to put a leveling kit on it or not.



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