Topic: Date code help

[Mstang]

Could you guys help me out with these part numbers to see if there correct I did the search thing for a couple of of  hours last night and I’ll list what I came up with
Vin-5F07A794906
Body plate - 65A - m - 26 - 19u - 33 - 1 - 6
Carb- C5ZF-F
Radiator-C4ZE-B
Fan-C4OZ-8600-B
Ac-C3DA-2875A
Fan clutch-C4AZ-C
Alt.-C5AF-10300-f
Going to check out a swap meet here in Massachusetts over the weekend, here are some photos of engine date codes, ac and heater box I went through hope I posted this right thanks gary

[Coralsnake]

Gary,

Im no 65 expert, but I can make some observations that may be helpful.

Your engine castings are in June and align properly with the build of your car.

[Mstang]

I had a question mark about this engine being original to the car so that’s good to here the time frame is on thanks for the response gary

[jwc66k]

Here's where to find the actual engine assembly date on a 289 block. From the driver's side, just above the oil pressure sender on the block, on an extension is a stamping - year, month, day, inspector/assembler, 5H23Z in this case. Sometimes that extension is machined off in a rebuild and the date code with it. There's another "stamping" on the oil pan mounting surface.
Jim

[Mstang]

Went to the garage to get a picture of the engine Date code, might have to pull the ac to see it, I’ll have to tackle that issue tomorrow

[Mstang]

Went and took the ac out to get at the date code here it is ,stamping is not that good

[J_Speegle]

Went and took the ac out to get at the date code here it is ,stamping is not that good

Looks like it could be 5F30 though the assembler is not legible

Just wanted to mention for others viewing the thread there is a fairly long article in the Library on date codes

[Mstang]

That’s good I’ll check that out ,trying to get a handle on whether this engine is original to the car

[Bossbill]

5F29 on the engine cast date above the starter and an engine build date of 5F30, like Jeff says.
Did they actually cast and then build that close together?

[Bob Gaines]

5F29 on the engine cast date above the starter and an engine build date of 5F30, like Jeff says.
Did they actually cast and then build that close together?

It was probably still warm from the mold. . I have seen other close casting /assembly dates  like that . I suspect it may have something to do with wrong dates put in the mold on purpose one way or the other . I don't think it was extremely critical if they were off much date wise in the molds. Like maybe the workers set the dates forward a few days so that they didn't have to change it in the mold for 3 or 4 days or whatever.  For example, the actual casting was on maybe the 26 but they had the date set in the mold as the 29. The engine assembly date being hand stamp was mostly likely accurate. To me something like that is more likely then casting one day and doing all of the machining and assembly the very next day but who knows. Just speculation.

[Mstang]

Bob in your opinion with the dates the way there set up could the engine belong to this car, this will determine my direction with this car, jwc66k mentioned a stamping on the oil pan rail, if that’s going to be the deciding factor I’ll have to pull the pan and see what’s there

[jwc66k]

. . a (date code) stamping on the oil pan rail, if that’s going to be the deciding factor

They would be the same. The date code near the distributor looks original. The "misstamped" last character is common, and it is not really related to the date..
Jim

[J_Speegle]

Bob in your opinion with the dates the way there set up could the engine belong to this car, this will determine my direction with this car, jwc66k mentioned a stamping on the oil pan rail, if that’s going to be the deciding factor I’ll have to pull the pan and see what’s there

It will not be. That would just be another date for the collection of data. Would expect that it's 5F29 or 5F30 given it (the date the block was machined)  would be the same or between the casting and the assembly date

[sgl66]

Bob in your opinion with the dates the way there set up could the engine belong to this car, this will determine my direction with this car, jwc66k mentioned a stamping on the oil pan rail, if that’s going to be the deciding factor I’ll have to pull the pan and see what’s there

The engine appears to be in the correct time frame. i agree with Jeff, no need to pull the pan for a date. I forget when 65 car production stopped but the steering box date 5H26 (August 26) might be from a 66 car