Gears?

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Oct 29, 2000 | 03:56 PM

hecticgb

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Gears?

I have an '87 Ford F250 with a 300 I6. I looked all over the axle and the differential and i cant find the stamping saying wut the gear ratio is. There is a metal tag on the differential cover but there is no gear ratio on it. If someone might have a good idea wut it could be(it is all stock no mods), or tell me where it is. Thanks

Troy

Oct 29, 2000 | 07:49 PM

StrangeRanger

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From: Copley, OH

Gears?

There's a VIN sticker on your door jamb. It has an axle code on it. Tell us what it reads and we can decode it.

Oct 29, 2000 | 08:52 PM

hecticgb

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Gears?

axle code is 35. im also curious the trans code is K wut transmission do i have? Thanks for the help on this.

Troy

Oct 30, 2000 | 06:02 AM

daywalker

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Gears?

On a 92' F-250 35 means you have the Ford 10 inch with a ratio of 4.10.

Daywalker
92' F-250 351 4x4 xlt 4.10 5spd sprcab lngbed

Oct 30, 2000 | 10:37 PM

hecticgb

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Gears?

Yup i found it in my manual. Thanks for the help.
Are 33"x12.5" tires alright to use with this ratio? WIll it affect towing at all?

Oct 31, 2000 | 05:56 PM

StrangeRanger

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From: Copley, OH

Gears?

With 33" tires and 4.10s you should be turning about 2850 RPM at 65 MPH in your 1:1 gear. If your trans has an overdrive, you'll be turning a lot less, right at 2000 RPM if it's a 0.7:1 OD. Those numbers sound pretty good to me.