Muncie vin #'s

[VI009DZ]

It wou

I think the stamping on LA Muncies depended on the mood of the plant worker.

It would be comical to find one stamped about 100 times all over the place by a pissed off, stressed out worker!!!!

[1968RSZ28]

Usually stamped at least three to four times.  On the very front part of the case, at the rear of the case, on the center bearing support, and the tailshaft lip.

Jerry

Now that's something I didn't know and will have to check!  Is it always at least three to four times?

Paul  

I got under the old Z tonight to check for multiple vin stampings on the Muncie and could only find two.  Both stampings are on top of the case, right (passenger) side, one in the front and one in the back as Jerry described.  There could be more, but with the transmission in the car and 39 years of grime, that's all I could find with my mirror.  There is also a metal tag attached to transmission side cover with the number 3915085 embossed on it.  What does this number reference?  

Paul      

[JohnZ]

 There is also a metal tag attached to transmission side cover with the number 3915085 embossed on it.  What does this number reference?  

Paul      
[/quote]

That tag is the "assembly number" for the transmission - it identifies the specific combination of main, side cover, and tailhousing castings, gearset type and ratios, input and output shafts, and output shaft speedo drive gear diameter and tooth count to suit a specific usage. Although most Muncies look the same externally, there were about a dozen different "assemblies" used, and that part number tag (and the broadcast code) identified which one they were.

[1968RSZ28]

That tag is the "assembly number" for the transmission - it identifies the specific combination of main, side cover, and tailhousing castings, gearset type and ratios, input and output shafts, and output shaft speedo drive gear diameter and tooth count to suit a specific usage. Although most Muncies look the same externally, there were about a dozen different "assemblies" used, and that part number tag (and the broadcast code) identified which one they were.

Where can I found the specific usage of this number (3915085)?  I'm curious if this number was only used for a Z/28?

Paul    

[bertfam]

Paul the 3915085 M21 Muncie 4 speed transmission had multiple usage in 68 (see the scan below).

Ed

[1968RSZ28]

Thanks Ed!  Where did you find this info?  Your P&A manual?  Also, what does "C.A.C." stand for?  

Paul    

[bertfam]

Yup. The P&A.

C.A.C. stands for "Cold Air Conditioning" (as opposed to "Hot" Air Conditioning I guess!!)

Ed

[KurtS]

C.A.C. stands for "Cold Air Conditioning"

Close.
"Car Air Conditioning"

[bertfam]

OOPS! You're right Kurt. I should have looked in the abbreviations section of the P&A before I spoke!!

Ed

[1968RSZ28]

Thanks guys.  C.A.C., that's a new one for me.  

Paul

[Ron C.]

Never seen a transmission stamped more than once (except for maybe an overstrike).

my 71 ss chevelle m22 was stamped twice.once on the flange (side) and on the case next to the flange.

[fireZ]

My 68 LOS z28 is stamped also in 2 spots.Each has a B behind the numbers and it is a 03e car with 302  tags