i told my friends on ddda site someone on there told and showed me a pic he also told me it is a toploader and it was out of a 70 mustang or cougar 302 boss see looks just like mine and the # match
C4 ZR7 AO40A
C8 AR- 7006 W-2 H-B i will get some pics of the 4 speed
OK, you have a toploader 4 speed transmission. It looks like this:
I have had and built these transmissions for over 30 years.
Toploader cases are generic. All guts from one will fit into another as long as it is a 64-73 case and that it is the same gear ratio (later.) The later overdrive cases from the mid 70's to early 80's are made different and so they don't count as yours is not one of those.
All the info you have given says that the case is from a 68 and up Ford, probably 68-71 and it is a toploader 4 speed. The tailshaft is from a 64-73 Mustang or Cougar with a small block 289, 302, or 351 engine. That is all you will ever find out with the casting #'s that you provided. There is nothing else cast into the tranny that will help--no where, no how.
If you want a more information on what you have, there is 4 more pieces of info that you can find on the tranny that are can give you more information.
First look at the input shaft. How long is the pilot? Compare it to this:
Also, what diameter is the thick part of the input shaft? Typical small blocks and 390 trannys have 1 1/16" shafts. Big block trannys (bigger than a 390) and BOSS 302's have 1 3/8" input shafts. These are known as the big input trannies, for obvious reasons. The output shafts of these tougher transmissions are also larger and will have more than 28 splines. The larger diameter output shaft requires a different tailshaft housing than the one you posted so your tranny did not come behind a BOSS 302.
Second count the # of teeth on the 2nd gear. It will either have 28 or 31 teeth. That will tell you if it is a wide or close ratio transmission. 28=close ratio 31 =wide. That is simple but because parts can be swapped between the 2 types of tranny's, this is not useful to ID the car.
Third. There should be a riveted on tag on the outside of your toploader. It is found on the passenger's side front of the tranny and can be seen on the LH center in this pic:
Here is a closeup of this tag:
This tells me the exact application that the tranny case was designed for. RUG E3 was destined for a 69 Mustang or Cougar with a 302 or a 351. It is a wide ratio top loader. The #'s found underneath are the builder's consecutive order #. It does not relate to any particular vehicle. It is possible for this tag to be missing after many years of service, but it will always be found in the same place and all the trannys originally had one.
The final bit of information can tell you the EXACT car that your transmission was destined for. Sometimes and very infrequently much of the car's VIN # is stamped on the top driver's side ear of the case--on the top of the case. You may or may not have it. It would be found in the following pic, right above the yellow tag:
This tranny DOES have a car's VIN # in that exact location. It is illegible in the pic because it is very light and the protective primer hides it. According to the VIN # this tranny was in a California built car. With the VIN, I could conceivably buy a Marti report to determine the exact car, right down to what it was (Mustang or Cougar), the color of the exterior and interior of said vehicle, and even whether it had a space saver spare, dual exhaust, console, etc.
If you do not have any of these markings, you are done in ID'ing this tranny and should just be happy that you have a toploader as there is nothing else to find out.
By the way, the casting # of the case that you supplied is incomplete. Check it again, but it won't mean anything else in your quest if you do not have the ID tag nor the serial #.