I can buy a new F-150 with a 3.55 or 3.73 rear end gear ratio. Anyone have a recommendation on which I should buy?
Chip
F-150 Rear End
Feb 17, 2006
Last reply: 20 years ago
3 Replies
Not a lot of difference in those ratios. Pick the 3.73 if you tow and the 3.55 if you don't (or not often or heavy).
The 3.55 will give you a bit better gas mileage. Really depends on what you hope to gain by changing gear ratios. jor
Depends A LOT on tire size. With the modern 4 speed autos, and the common usage of larger tires as standard equipment, I'd be more inclined toward the
3.73. Remember that the Triton engines (4.6, 5.4, and V-10) are OHC designs and prefer more RPM than the old pushrod engines.CJB
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