pulling gears

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Jun 4, 2010 | 08:18 AM

#16

85300

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Joined: Apr 2010

Posts: 63

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From: Trinity NC

ok thanks i think ill check up on this a little more and maybe try a 3:89 or something pretty close. eventually i want a zf 5spd but cant do that right now.

Jun 4, 2010 | 08:40 AM

#17

80broncoman

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Joined: Nov 2003

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From: southeren Oh

I 2nd find out what gear ratio you have in the axles first.

Is this truck used empty somtimes and loaded?? if so I'd consider swaping your trans for a 4SP with the extra low first gear. yes it will lower the overall gearing on the highwy as it is not and overdrive. But they also have a low first gear to help move a load without killing the clutch.
This will be better loaded for sure. but it may use more fuel on the highway.

Both the front and rear axles need to have the ratios within 3% of each other or else!!

Jun 5, 2010 | 12:07 PM

#18

6CylBill

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Joined: Jan 2007

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From: Almost Heaven

With the E4OD, going 50 mph pulling a heavy load, 4.11 gears are what you want.

I have a 300 with the E4OD and 4.11 gear ratio. She'll move 7,000 lbs like it's nothing.

Jun 5, 2010 | 08:08 PM

#19

flipklos

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Joined: Sep 2007

Posts: 2,095

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From: Wahpeton ND

Quote:

Originally Posted by 6CylBill

With the E4OD, going 50 mph pulling a heavy load, 4.11 gears are what you want.

I have a 300 with the E4OD and 4.11 gear ratio. She'll move 7,000 lbs like it's nothing.

I hope you meant a 7000lb load, not combined. I have no issues moving 12000 lbs combined. Though I live in ND which is fairly flat. My 3.55s work fine here. In hilly country I would need a lower final.

Jun 5, 2010 | 11:25 PM

#20

6CylBill

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Joined: Jan 2007

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From: Almost Heaven

Yup, I hooked up to sevel grand. I didn't do this where other people could get hurt.. I just wanted to see how the truck could do.

Jun 6, 2010 | 11:36 AM

#21

flipklos

Cargo Master

Joined: Sep 2007

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From: Wahpeton ND

7k is about the very edge of what a F150 should pull 5-6 is ok. I feel fine doing a 7k pull but I tend to take the road less traveled.

Jun 6, 2010 | 12:25 PM

#22

Rogue_Wulff

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Joined: Dec 2007

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From: Lost

Heck, I've drug 7K behind my truck, with 2.75 gears. Of course, it never made any faster than 40, and 3rd never engaged. Thankfully, it was only a few miles of flat backroads.
I've drug 5K several times, and once I went ~200 miles on the interstate with that much. Wasn't fast uphill, but went up them.