Worth the switch to 4.30s?
in the coming months we will be purchasing a TT that will be just a hair under 9,000 lbs. loaded. My Excursion has 3.73 gears, which I'm told are not ideal for the V-10's power band. Is it worth makin...
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Coming from someone who has a V-10 X originally with 3.73`s I can tell you the 3.73`s will not be enough for a 9klb trailer! my trailer is 9200lbs loaded. I towed one season with 3.73`s and switched to 4.30`s for the next season.
You will notice how much better it tows. you will be much happier when you get to an incline and the X pulls right up. you will get about .5 mpg better towing. It will also stop hunting for gears because he engine and trans will not be working as hard. When I had 3.73's with my trailer I couldn't hold O/D at 65 because the RPM's were to low in O/D. And too high in 3rd. With the 3.73's it would stay in O/D with no issues. It's all about how efficient the powertrain is, and with 3.73's and a heavy trailer it will not be efficient with higher gears. The lower gears (numerically higher) will always tow better!
Add in a 5star tuner and it will pull with the diesel guys all day long! I would even say 4.56`s wouldn't be out of the question even with stock size tires!
Yes it is well worth it!
You will notice how much better it tows. you will be much happier when you get to an incline and the X pulls right up. you will get about .5 mpg better towing. It will also stop hunting for gears because he engine and trans will not be working as hard. When I had 3.73's with my trailer I couldn't hold O/D at 65 because the RPM's were to low in O/D. And too high in 3rd. With the 3.73's it would stay in O/D with no issues. It's all about how efficient the powertrain is, and with 3.73's and a heavy trailer it will not be efficient with higher gears. The lower gears (numerically higher) will always tow better!
Add in a 5star tuner and it will pull with the diesel guys all day long! I would even say 4.56`s wouldn't be out of the question even with stock size tires!
Yes it is well worth it!
