Please explain rear axle ratio
10-19-2014, 01:58 PM
#41
The 3.73 would give you near the max the truck can do; less better overall fuel economy. 1/10ths miles per gallon lower.
Last edited by papa tiger; 10-19-2014 at 02:00 PM.
10-23-2014, 11:16 AM
#43
Senior Member
10-23-2014, 12:09 PM
#44
I believe with the 3.73 axle you get the heavy duty package including the 51 tube radiator. All else get the 41 tube radiator. Not sure for 15 though it mentions heavy duty package with the 3.73 and not other axle ratios. Also the diameter of the rim is larger. Many want larger rims/tires on theirs. 3.73 an your ready for them.
Last edited by papa tiger; 10-23-2014 at 12:11 PM.
09-09-2015, 07:48 AM
#45
Senior Member
Are there any additional advantages to getting 4WD.
I'm not very truck savvy when it comes to rear axle ratio. Why is it important? I think it has something to do with towing, but is that all it's used for? Why is it important for towing? What exactly is this the ratio of?
I was building a Lariat on the build site and these were my options:
3.15 electronic locking axle ratio
3.15 non-limited slip axle ratio
3.55 electronic locking axle ratio
Why would I choose one ratio over the other? What difference does it make?
I chose max tow package and saw that it had the 3.55 locking axle ratio. If I sometimes pull a boat, do I need the max tow package? If not, which ratio is best for occasionally pulling a boat?
What ratio is best just for everyday driving going down the highway?
What are the advantages and disadvantages of each ratio?
And what is limited slip vs. locking? Why and when would one be better than the other?
Thank you for the explanations.
1969TxCowboy
I was building a Lariat on the build site and these were my options:
3.15 electronic locking axle ratio
3.15 non-limited slip axle ratio
3.55 electronic locking axle ratio
Why would I choose one ratio over the other? What difference does it make?
I chose max tow package and saw that it had the 3.55 locking axle ratio. If I sometimes pull a boat, do I need the max tow package? If not, which ratio is best for occasionally pulling a boat?
What ratio is best just for everyday driving going down the highway?
What are the advantages and disadvantages of each ratio?
And what is limited slip vs. locking? Why and when would one be better than the other?
Thank you for the explanations.
1969TxCowboy
I am building a Lariat SuperCrew 157" WB with Max Towing and 3.55 electronic locking axle ratio. Are there any additional advantages to getting 4WD? I don't do any offroading, but I do heavy towing and I also live in a state that gets some snow/ice. The $3,000 additional pricetag, reduced gas mileage, and reduced towing capacity (200 lbs) for 4WD makes it worth the research. I currently have a Toyota Tundra Crewmax w/ 2WD and I only get a little slipping during icy conditions.
Last edited by Stans2000; 09-09-2015 at 08:08 AM.
09-10-2015, 11:45 PM
#46
Senior Member
Well a 4WD truck will be infinitely easier to resell and command a higher price too. Maybe not dollar for dollar wat you paid up front for it but te demand will be much greater for the 4wd. Obviously you're not buying it for what the next guy might want in a truck, but I did. I got max tow with 3.55 e locker and 4wd and I don't "need" any of it.
09-12-2015, 09:02 AM
#47
Senior Member
It appears that for 2016 according to the order guide, 3.73 w/3.5 EcoBoost remains available only with the HD Payload package, which limits available trim levels and options.
10-13-2015, 06:00 PM
#49
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Great thread and timely for me. I'm shopping around for a 2015 4x4 w/3.5 Eco Boost and Max towing. Selecting the best axle ratio is a consideration for me as well. Was at the local Ford dealer today talking to a salesman asking him questions about towing capacity, and he was throwing out some "rough" numbers, but couldn't be specific about axle ratios & power-plants. I asked him if he had a towing spec sheet for all the different configurations and he did. He copied it for me; see attached pdf.
10-14-2015, 02:05 AM
#50
so I'm looking at ordering a 5.0 lariat s crew and I don't plan to do much/any towing, nor do I want to lift it and put big tires on it.
But, I do want to maximize for street performance. I had an SVT Lightning for many years and miss it, I'm hoping to put a blower on a 5.0 2016 f150 since it doesn't look like they are going to bring the lightning back any time soon
would 3.73s be just silly for such a truck? stick with 3.55? someone mentioned 1/10th a mile per gallon difference, is that accurate? if so it doesn't seem like much so maybe 3.73 is better for for low-end power?
But, I do want to maximize for street performance. I had an SVT Lightning for many years and miss it, I'm hoping to put a blower on a 5.0 2016 f150 since it doesn't look like they are going to bring the lightning back any time soon
would 3.73s be just silly for such a truck? stick with 3.55? someone mentioned 1/10th a mile per gallon difference, is that accurate? if so it doesn't seem like much so maybe 3.73 is better for for low-end power?