I'm new on this site and was wondering if anybody has any info on the DSO that is on the drivers door side. It reads 710055. Thanks in advance for any help.

 

are you sure it is not just 71 which is a california truck

 

A DSO with code 71 is Los Angeles. I've seen some trucks with extra digits after the code, but haven't figured out what they mean.

Barry

 

SVOs Barry. . . . they're SVOs. . . .
For example a 66 F100 w/ Ranger Trim Pkg & one of the rare 390s, or a Galaxie Plain Jane car with the PI 406 & T85 or side loading 4 gear etc. . . the special ordered Pkgs some folks somehow were able to manage to acquire.
Anytime there was a Special Vehicle Option and the customer came in for 1863s' if it wasn't "recognized" with the added numbers thru delivering/selling DSO there was no 1863 authority available.
TASCA cars could be a nightmare! They were NOT DSO recognized vehicles. Instead they were built right there at TASCAs' shop in RI. TASCA car could sit for days/ weeks until paperwork or DSO Rep came around and approved or rejected 1863 on it. . . .
It was done to prevent any unauthorized alterations from being carried by FoMoCos' 1863 program once people started bolting over the counter "HO" stuff onto their OEM Stock "family rides". . . . If I ran into an oddity, say a 9" rear under a Falcon Sprint, & had no DSO additional coding, it was a bogus install and not covered under 1863. . .

In the above example, 0055 is a code. I never saw any printed sheet listing what any code meant. The "sop" was to call/ contact my D-Rep, give them the info I had, WRO, DSO, any code #'s, repair operation # & Flatrate time.
My D-Rep would contact issuing DSO for a verification#, if it was out of our district, then issue my dealership an authorization# with which to proceed.
No authorization number = no tickee no shirtee if ya catch my drift. . .
When I was spinning wrenches, I did work on a 57 Bird with a 300/312 "Y". Altho I got paid my time, the dealer didn't because car was supposed to be 245/312, not a Paxton Interceptor. It was 3 years later when they started with the extra code #s, I think. I guess they figured out they were losing $$ fixing unauthorized modifications etc.

FBp

 

We never really got into the service end of the dealer. I remember the 1863 warranty form, filling in the form with the part numbers at cost. In parts, the FPS 340 damage claims was important. You'd get quarterpanel mangled and we'd have to get paid to repair it.

Barry

 

according to my 65 shop manual as well as my parts book dated 9/68, it says as follows... "if vehicle is built on a D.S.O.,F.S.O.,L.P.O.(special order) the complete order number will be reflacted under the DSO space including the DSO number."

I have seen a few trucks like this and one which I know was local did have my local DSO as last two digits in it...so I would say your DSO is 55 which is St. Louis

Hope this clears things up or at least sheds light on things more...cs65

 

I'm not sure that's right as Mike is from calif., according to his profile. The truck could have made it's way to calif., but I doubt it. I'm leaning more on my original post.

Barry