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Clay 05-12-2009 09:29 AM

axle ratios
 
When buying a used vehicle is there a way to verify the axle ratio without seeing the original paperwork for the truck?

RustyJC 05-12-2009 10:11 AM

Perhaps some of the Ford and GM folks will step in, but on the Dodge (depending on vintage) this information is often found on a sticker inside the glovebox door or under the hood.

Rusty

mfire1339 05-12-2009 10:36 AM

My Ford pickups, Dodge motorhome and gm motorhomes had metal tags on differential covers with the ratio and an "L" if limited slip.

Mike

Clay 05-12-2009 03:24 PM

Thanks!

TXiceman 05-12-2009 06:38 PM

You can also get the axle code from the sticker on the drivers door jamb for Fords. Check with your dealer and ask for the axle per the two letter/digit code.

Chevy usually will have a sticker in the glove box with an axle code listed.

Ken

Clay 05-12-2009 07:48 PM

Thanks, buying a used vehicle is the pits!! It was so much easier when the bought our (now totaled) truck new, and just gave the dealer a list of everything we wanted. :blush:

WindRVer 05-13-2009 05:32 PM

My 99 dodge diesel had the 3.73 stamped right on the end bell of the differential. I haven't checked my 2008 to see if it still is there.

gearman 05-14-2009 06:12 AM

If your looking at fords again,('99-'06ish) SRW, w/PSD, you dont have a choice. They are all 3.73

Sticker inside door jam, should spell it out as well as stamped on diff.

Clay 05-14-2009 08:29 AM

What is SRW, w/PSD?

TXiceman 05-14-2009 08:33 AM

SRW = single rear wheels
DRW = Dual rear wheels
PSD = Power Stroke Diesel...Ford
D/A = Duramay/Allison...Chevy

Ken

gearman 05-14-2009 09:34 AM

Quote:

Originally Posted by clayvd (Post 502696)
What is SRW, w/PSD?

Sorry, I assumed that you being a former Ford owner that you would automatically know PSD, my bad!

Clay 05-14-2009 10:03 AM

No problem :)

Ray,IN 05-15-2009 06:50 PM

For a quick N dirty method of determining rear axle ratio I use this: Tape a piece of ordinary string to the driveshaft. Chalk mark a rear wheel and the pavement exactly in line with the wheel mark. Jack up the wheel and turn it one revolution. Count the number of wraps(and partials of course) of string on the driveshaft. That is the rear axle ratio.

Jeff_in_The_Dalles 05-25-2009 10:18 AM

Also with Dodge, if you take a vin number in to a dealer they should be able to print you a build sheet showing exactly what options and packages the truck has.

I would guess the other two might be able to do the same?


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