1987 F150 XLT Lariat rear axle code

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09-02-2011, 08:55 AM

cbeaner

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1987 F150 XLT Lariat rear axle code

I am trying to interpret the rear axle code located on the tag on my axle. The designation is S306 D. Can anyone help me out?

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09-02-2011, 10:09 AM

glc

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You need more than that - there are several more numbers on the tag. If you can post the axle code on the door jamb sticker, we can at least tell you what ratio it is and whether it's LS or not.

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09-02-2011, 01:41 PM

cbeaner

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Thanks,

I will get the rest of the code, and also look at the door jamb tag.

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09-02-2011, 01:45 PM

Kraft1982

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If you happen to have the owner's manual it will tell you based off the axle code on the door. I have a 89 f150 with an axle code of 19. That's 3.55 gears with no limited slip. It was all listed in my manual.

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