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help
i have a 2004 f350 srw 3.73 rear. i want to purchase a 4 horse gooseneck trailer that weighs 7000 lbs empty. each horse will weigh avg 1000 lbs can this truck safely pull this trailer. i am new and i need help
thanks
thanks
Postmaster
Joined: Jan 2005
Posts: 2,753
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From: Phenix City, AL
Pinghogan,
Welcome to FTE!
Yes you will be ABLE to pull that, but your truck won't be real happy with 11,000 lbs back there on 3.73 gears. If you only do it occassionally, you'll be just fine, but if you plan to do this all the time, step up to the 4.30 gears and then the truck will laugh at it.
Just for reference, I have an almost identical truck as your's except it's a 250. I drug my parents boat, weighing 9k and it was "okay". The truck pulled it jsut fine, but was definitely not happy on those 3.73's. If I was gonna do this often, I would have wanted 4.30's. This was before the lift and big tires, now it has 4.56's and pulls like a demon.
Keep in mind that the V10 needs to be running at 2100 - 2250 rpm's at 65- 70 mph to be making good power. Below that and you are gonna be hunting for gears with that weight back there. Don't be afraid of turning RPM's in that puppy, she'll laugh all the way to the rev limiter, which by the way hits at 600 rpm's below "redline".
You really are gonna want to do gears on that thing and the difference in unloaded gas mileage is not that noticeable.
Welcome to FTE!
Yes you will be ABLE to pull that, but your truck won't be real happy with 11,000 lbs back there on 3.73 gears. If you only do it occassionally, you'll be just fine, but if you plan to do this all the time, step up to the 4.30 gears and then the truck will laugh at it.
Just for reference, I have an almost identical truck as your's except it's a 250. I drug my parents boat, weighing 9k and it was "okay". The truck pulled it jsut fine, but was definitely not happy on those 3.73's. If I was gonna do this often, I would have wanted 4.30's. This was before the lift and big tires, now it has 4.56's and pulls like a demon.
Keep in mind that the V10 needs to be running at 2100 - 2250 rpm's at 65- 70 mph to be making good power. Below that and you are gonna be hunting for gears with that weight back there. Don't be afraid of turning RPM's in that puppy, she'll laugh all the way to the rev limiter, which by the way hits at 600 rpm's below "redline".
You really are gonna want to do gears on that thing and the difference in unloaded gas mileage is not that noticeable.
Last edited by BFR250SD; Nov 4, 2005 at 08:20 PM.
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bfr250sd. does changing the tire size change the gear ratio? to go to the 4.30 gears would i have to change the rear end
thanks sorry for the stupid questions but i am not a mechanic
thanks sorry for the stupid questions but i am not a mechanic
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Postmaster
Joined: Jan 2005
Posts: 2,753
Likes: 3
From: Phenix City, AL
Changing the tire size, be it up or down, doesn't CHANGE your gear ratio, so to speak, but it does change the effective gear ratio that the truck will feel like it has. If you put on bigger tires, the truck will FEEL like it has higher gears. Smaller tires would make it feel like it has lower gears.
To change gears, you don't have to change the rear end. All you have to do is change the gear set IN the rear end. Keep in mind, this in not a cheap switch. Figure on 150 - 200 per gear set (front and rear gears), 100 - 200 for the install kits (basic up to master install kits), fluids (approx $25), then the big kicker LABOR. Look at anywhere from 300 - 600 per axle to install the gears.
My truck for example, total cost for gears, lockers, install kits, & labor was $3200. This is the high side, as mine has ARB lockers which run the bill up $1600. If you don't get new differntials, you are looking at approx $1000 - 1600 for the total cost.
Trust me, if you tow that much, you are gonna want the gears. It will make the difference feel like night and day.
To change gears, you don't have to change the rear end. All you have to do is change the gear set IN the rear end. Keep in mind, this in not a cheap switch. Figure on 150 - 200 per gear set (front and rear gears), 100 - 200 for the install kits (basic up to master install kits), fluids (approx $25), then the big kicker LABOR. Look at anywhere from 300 - 600 per axle to install the gears.
My truck for example, total cost for gears, lockers, install kits, & labor was $3200. This is the high side, as mine has ARB lockers which run the bill up $1600. If you don't get new differntials, you are looking at approx $1000 - 1600 for the total cost.
Trust me, if you tow that much, you are gonna want the gears. It will make the difference feel like night and day.
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