From my TH400 book, "The ID code gives the model year, a two digit division and calibration code, and a serial number. Some have a second line indicating the day the transmission was built."
Given the above I'd say you have a 1969 Chevrolet TH400 built on the 338th day of the year. The only problem I see from my reference is that the first CW code shows as being for a 1970 Chevelle, V8 400CI. The codes don't show a 70 402, so I'd bet the 400 meant the SS Chevelle 402.
Perhaps the late build date in the year meant the trans would show up in a 1970 car?
Sorry I can't be more definitive, maybe others have a better reference for the other numbers.
John Walker
Given the above I'd say you have a 1969 Chevrolet TH400 built on the 338th day of the year. The only problem I see from my reference is that the first CW code shows as being for a 1970 Chevelle, V8 400CI. The codes don't show a 70 402, so I'd bet the 400 meant the SS Chevelle 402.
Perhaps the late build date in the year meant the trans would show up in a 1970 car?
Sorry I can't be more definitive, maybe others have a better reference for the other numbers.
John Walker