Looking for clarity on 1966 M21 trans identification.
P0328 means March 28. What does P01005 mean? This tranny from a 66 car built Nov 1965.
P0328 means March 28. What does P01005 mean? This tranny from a 66 car built Nov 1965.
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Re: C2 (66) Transmission identification
Without "looking up" some information I do seem to remember (questionable also), a couple of things. The P before the date, I believe to be the code for a Muncie 4 speed trans. The other number you list may be the VIN derivative that should be stamped on the case is it is "original to your car". I believe that would match the stamp on the engine pad if so. Also, as I seem to "remember" reading or learning somewhere (possibly an NCRS seminar), that the engine and transmission were both stamped at the same station with the same "gang stamp". Could be mistaken on some of this, I would have to "refresh the information in the vault" (my memory) to be exactly on this. I am sure someone else may clarify. If the information (in the vault) serves me correctly, 1966 was the year that the muncie went through a total re-design.
Lynn -
Re: C2 (66) Transmission identification
Ronald,
Could you post a picture of the numbers on your Muncie? The P means Muncie plant. A date code of 01005 doesn't make sense. If it was 1005 that would be October 65.
JoeComment
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Re: C2 (66) Transmission identification
Yes tonight, I have it on a computer at home.
Clarification: This is a tranny from a 66 vette being parted out due to fire, I need a correctly dated trans for my 66bb.
This one was real clear P01005, no grind marks or other that would lead one to think it was a fake, and the VIN was stamped on the other side, faint compared to the Muncie date, but still very clear.
With everything I hav read about 1966 Muncie on 5speeds.com and elsewhere there is an extra "0" in there that defies explanation.Comment
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Re: C2 (66) Transmission identification P01005
This is a photo from a '66 that I owned a few years ago. I always thought that the "P01005" was mis-stamped. It looks like someone on Oct. 5th didn't setup the gang holder correctly. What is the VIN stamped into the other side of the trans? (Same car?)
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Re: C2 (66) Transmission identification
VIN is 6s104162Comment
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Re: C2 (66) Transmission identification
Here is a picture of the stampComment
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Re: C2 (66) Transmission identification
The VIN with my car was about 70 units before your transmission. It looks to be good if there is now two transmssions with the same "P01005" date code on it. (It was stamped wrong from the factory! I pretty sure it should have been stamped "P1005") Oct. 5th was correct time frame for both of our cars. Interesting!Comment
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Re: C2 (66) Transmission identification
This car/VIN discussion was really interesting, in reality clarifies a strange error in the stamping process and unfortunately I need to keep looking for a tranny - as this one is too early in the year for my car.
This referenced car burnt, trans and many other parts are being parted out...Comment
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Re: C2 (66) Transmission identification
Oct 05 1965 was a Tuesday - anyone out there with a Muncie dated 10-01 or 10-04???Comment
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Re: C2 (66) Transmission identification
Ronald -- I'm assuming that you're asking this to see whether the error of the zero between the P and the 10 (for a late October Corvette # 104162) continued from the previous Friday and Monday.
I've seen this mis-stamp a few times on eBay trannys, so it may have been just that one day (Oct 5th).
But just how late a trans are you looking for (assembly date stamp-wise) ? You will probably get closer to your VIN, but it will always be off, unless you find your original.
Remember, with the NCRS 6-month rule (don't believe a trans date and VIN derivative are a judged items [yet]), you have a lot of leeway. My first car was a mid-Dec '64 final assembly with a P0826 assembled trans (from P-o-P imprint); however, there was a 6-week strike in there which counts for some of the gap.Comment
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Re: C2 (66) Transmission identification
My '66 has a May build date and the original trans per the VIN stamp (121571). My trans date stamp is P0506 but is stamped the opposite direction, from the top down instead of the bottom up as you show. Must have been a lefty that stamped it!
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Re: C2 (66) Transmission identification
Wayne, There are two cars out there with P01005 tranny's that we know of built within 70 VIN's.
10-05-65 was a Tuesday, so the question was if anyone had a trans stamped 10-01 or 10-04 to understand if it was a one day error in loading the stamp or was a flaw in the logic as the Mncie went from 09 September dates to a two digit October date. That's all, sort of a diversion on the thread.
On my car I doubt the tranny can be found as I have talked to the mechanic who said it was trash and threw it away 35 years ago. So I have to look for a close one Mid April 66.Comment
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Re: C2 (66) Transmission identification
In this Muncie research I have seen a P01006 of which I got the photo, another P01012 but no photo, none after that date with the extra zero.
Now to the hard part - is it possible these cases left the Muncie plant un stamped?
How about this picture attached that has some casting detail, but no P stamp?
Any one know what the 'upside down large "2" means in the cases?
how about the smaller number and dots that normally are within the circle?
I assumed it was the year in that for 65 dated trans they have been a 5 and 66 dated trans they have been a six until this one, note that the 5010 case was only out there for 66 and 67.Comment
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Re: C2 (1966) Transmission identification
Anyone know anything about those casting numbers on the side of the case?Comment
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