4:10 gears

fourtss · Post by **fourtss** » Sun Aug 13, 2006 9:13 pm

I found out today that my truck is a special order truck, came w/c6 tranny dana60 4:10 gears, then some dumb,a$$, pulled the auto and put in a 4 speed w/granny low, best I can figure it's the T-18 tranny, it runs about 3000 RPMs when cruisin down the road it's time to put my auto back in it.

ToughOldFord · Post by **ToughOldFord** » Sun Aug 13, 2006 9:19 pm

Won't change anything unless you put an overdrive in it. Any non-overdrive transmission standard or auto, have a 1 to 1 ratio when in high gear.

fourtss · Post by **fourtss** » Mon Aug 14, 2006 5:03 am

well guess I'll have to find me a set of gears then,

ToughOldFord · Post by **ToughOldFord** » Mon Aug 14, 2006 8:10 am

Yep. I had 4:10's myself, I switched to 3:73s. Didn't help much, dropped my RPM by 200 on the freeway. I should have gone with 3:55s.

binder56jd · Post by **binder56jd** » Mon Aug 14, 2006 11:05 am

go at the very least 3.55

willowbilly3 · Post by **willowbilly3** » Mon Aug 14, 2006 11:28 am

Or some really tall tires.

Post by **DuckRyder** » Mon Aug 14, 2006 11:48 am

Guys,

Remember when discussing gear ratios, you must consider tire size.

a 4.11:1 in an F-100 with a 28" tire and a 4.11:1 in an F-250/350 with a 33" tire are two different animals.

jzjames · Post by **jzjames** » Mon Aug 14, 2006 2:29 pm

Ive grown to like my 3.70 gears. Cruises nicely at 65. Like the torque.
Get a good exhaust and muffler. Consider some sound deadening insulation.

Tim P. · Post by **Tim P.** » Mon Aug 14, 2006 4:13 pm

Im definetly changing my to a 3.55 from 4.10 for less wear and tear and better milage plus more highway speed the motor makes up for less gear

flyboy2610 · Post by **flyboy2610** » Mon Aug 14, 2006 7:38 pm

May I ask what the primary purpose of the truck is?
If it's for hauling, pulling loads, and other related work you may be better off staying with the 4:10's.
If it's a daily driver, then go to 3:55's.

fourtss · Post by **fourtss** » Mon Aug 14, 2006 8:01 pm

it's a daily driver, I don't have a boat or camper anymore

but hopefully next spring I'll have another boat, I thinkin 3:73's

67highboy · Post by **67highboy** » Sun Aug 20, 2006 3:37 pm

If you have a stout motor go with the 3.55 it will still haul anything you need to haul.

fourtss · Post by **fourtss** » Sun Aug 20, 2006 5:40 pm

I think ur right highboy,I just rebiult a 360 and put a mild cam in er I think I will go with 3:55's

Fossil Dawg · Post by **Fossil Dawg** » Tue Sep 12, 2006 12:37 pm

Ok guys, i'm a first timer, so you know what they say about stupid questions. I have the same setup, 4:10 rears, tranny w/a granny, 360mtr,(i'm rebuilding her to be a little more stout), so if i change to a c-6, i'll still have the same problem even if i change to 3:55's? The reason i'm asking is, i'm thinking of buying a 5th wheel trlr, i'm in a delima

can ya'll help, any and all will be greatly appreciated.

Jeff

fourtss · Post by **fourtss** » Tue Sep 12, 2006 8:01 pm

you will still have the same gear ratio, I put an auto in mine and she really wines goin down the highway however if you find a 5 speed for it you will do much better as far as gas and I'm sure it'll still pull a 5th wheel

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