Quote:
Originally Posted by boywonder
So....are 4.10's totally worth it with a 5.4L??
Gas mileage any worse? tire size??
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For me, 410's are a good option. The mighty 5.4L is a bit small to be hauling nearly 9000 lbs around, and on mountain passes it's way underpowered. With the original 373's and 32 inch tires, long uphill grades required 2nd gear crawls. With 410's, I stand a chance of pulling the same grade in high gear for a while, but normally have to unlock the torque converter and far less often, I have to resort to 2nd gear. Also, the spedo was off by a lot, but with the new gears, it's accurate to within one or two MPH, so I'd say it's back pretty close to stock hill climbing ability. As for mileage, I average about 12 but I don't know what it was before the change since the speedo was so far off.