NitrogenJunkie

4.10 are 50.00 option with max tow package

shortride

iTrader: (1)

The difference between a 4.10:1 and a 3.73:1 ratio is 3/8 of a full turn of the drive shaft.

If you continue to to haul a 3500 lb trailer you won't like the fuel mileage and loss of power if you put 35" tire on the truck.

What kind of boat do you have that weighs 6500 lbs? it must be about 28 ft. long. I realize an F150 will pull it but its going to be tasking it over a long haul. You might should have considered an F250 for your type of hauling.

dejong1

You don't need an f250 if you get 4.10

shortride

iTrader: (1)

It will defeat the purpose with 4.10:1 gear ratio if he puts 35" tires on it.

NitrogenJunkie

I currently tow this with a toyota tacoma with 32's since 1998. Now have 150k miles and she's kind of tired. The boat os 25' walk around fishing boat that carries 110gallons of fuel. Add coolers with ice and beverages i'm approaching 6500. Seems like 4.10 is the way to go but the sales rep says its not necessary.
Appreciate everyones input. Keep it coming as i want tp finalize my order after worl today

Rkcrawl

No, it won't. He's thinking ahead so he doesn't get the 3.73 and then feel under powered because of the change in the overall drive line with the larger tire and have to regear later. $50 now vs 1200-1500 later (unless he just lived with the 3.73s and the newer larger tires).

Yes, going from the stock 32" tire to 34 or 35" tire he will notice a difference, but the 4.10 will be about right for that tire size(34-35). 4.10s with the 32 will be great on the low end(torque), but not so great for mpg as the rpms will be up at cruising speed.

SuperDave79

You regularly make that argument. It sounds like you just don't like big tires. Having put the bigger tires on my truck, I see how all of the arguments have their merit. Yes you will lose gas mileage, acceleration, etc. I don't believe that anyone making that change expects otherwise. It's not that adding the larger tires defeats the purpose of the 4.10 gears... but since the big tires are on, the 4.10's will make it more like stock. I don't think its a good idea to do it to an F-150 that is going to tow that regularly... but that is a decision he probably made already.

On a side note- Hey RKCrawl... my new gears are getting installed today! At a cost significantly higher than $50!

Rkcrawl

Yep, and you're only doing the rear! For $50, and if I were thinking about 35s, seems like a no brainer (at least it would be for me, had I ordered my truck).

Good luck with the new gears and lsd.

NitrogenJunkie

Thanks to everyone for your comments and advice. Got home too late from work to pull the trigger today, but I think the 4.10 is what I will order. Just seems to be the best way to go for the long haul. I keep my trucks for 12 or more years (well the last two were toyotas, hope the ford treats me as well) I do go offroad and like the clearance taller tires give me and don't want the power loss of large tires without proper gearing nor do I want to incur the expense of a gear change in the future if I can get it right now from the factory. Been there done that. My '86 toyota sittin on 36" swampers provided many lessons for me. It would be nice to do this truck up right from the factory since I can order it with the long term picture in mind. The stealership is waiting for my call and deposit check. Again, thank you all for your input.

Don