GM Assembly Plant Z Designation Question

[clm69z28]

What GM model was built at a plant with a Z designation? I found a Muncie with a partial vin 0Z1434181 for sale,  and I am trying to figure out what it came out of? Thanks for the help.

[ZLP955]

Z was used by Fremont, CA. That plant assembled models including Chevelles and El Caminos. But that partial VIN, seems there's an extra digit after the Z if it's from the 1970 model year...... or the Z and the 1 position are switched.
I'm not sure what car lines Fremont was assembling at that time, thought there was a gap in Chevelle/Elky production there for a couple of years. Plus a VIN sequence of 4xxxxx in 1970 would've been for a Corvette.

[ZLP955]

Can you post a picture of that partial?

[bertfam]

The Z designation wasn't used in 1970, so something's wrong. Are you sure it's not a "2"? Yes, post a picture.

Ed

[clm69z28]

Here's a pic of the vin.

[bertfam]

That's weird. P0 is a 1970 Muncie, but that VIN has one too many numbers in it and like I said before, the Z designation wasn't used in 1970 (or 1971 or 1972).

I wonder if that last digit is a place holder like the partial c we see on the 68 transmissions. The VIN would then be 0Z143418? Or maybe that's not really a Z but a 2? St Therese built full size cars and those started with 100001.

Since it's a 70 transmission, is there a letter designation after the assembly date (A, B or C)? Also, where does the speedometer cable exit? Left side or right?

Ed

[clm69z28]

i will check on the speedo location, i will have to ask the owner. in the pic, there is a faint letter after the assembly date which looks like a C to me? Maybe I'm just hoping it's a M22....

[bertfam]

Well, after a little research on WIKIPEDIA, it appears Fremont also built Pontiacs and Olds during that time, so maybe it came from one of those? Still doesn't explain the partial VIN though.

Ed

[clm69z28]

The owner mentioned he thought it was a replacement transmission, and that's what he thought the C meant??

[clm69z28]

The owner did mention that it might have been from an Oldsmobile IIR. Has a Hurst Comp + shifter too.

[Stingr69]

Maybe "Z" is actually an inverted "7"?

[clm69z28]

I contacted the seller, and he said that it came out of a 1970 Oldsmobile 442. He thought it was a replacement transmission.

[bertfam]

A factory replacement transmission wouldn't have a partial VIN stamped on it. Unless he means it was a replacement to his car from a DIFFERENT car.

Ed

[clm69z28]

No, a replacement like a CE block, that was his rationale for the C after the date code.

[bertfam]

Replacements transmissions installed under warranty wouldn't have a partial VIN but WOULD have a build date (in this case P0C20) and a serial number. If it was really for an Olds, the serial number would be stamped LTxxxxx (where xxxxx is the sequential serial number of the transmission). More info HERE.

Ed