Best source for "numbers"?
Thread Starter
Instructor
Joined: Nov 2005
Posts: 163
Likes: 3
From: Prior Lake Minnesota
Best source for "numbers"?
What is the best source to figure out what certain numbers are for a C2? I decided to look my '65 roadster over for more "numbers" on parts, date codes, etc, etc. I have found many of them, but don't know what they mean, or what they represent. As you know the Corvette Black Book only goes so far. I am looking for something more detailed. Here are a few example of what I mean:
Trans VIN S107961 (OK, I know this means I have a matching trans
)
Trans Tag 3857579
Trans on pass side rear (opposite side where VIN is located) P01 18
Trans pass side by patent # 3851325
Rear End AP1 18 65
Rear Date code K64 (October 64 I think)
Bellhousing 3858403
Can anyone tell me what these mean and if they are correct for my car? Again, if there is a source I could go to so I can self sufficient , I am more than happy to do that. Thanks for any input.
Dave
Trans VIN S107961 (OK, I know this means I have a matching trans
)Trans Tag 3857579
Trans on pass side rear (opposite side where VIN is located) P01 18
Trans pass side by patent # 3851325
Rear End AP1 18 65
Rear Date code K64 (October 64 I think)
Bellhousing 3858403
Can anyone tell me what these mean and if they are correct for my car? Again, if there is a source I could go to so I can self sufficient , I am more than happy to do that. Thanks for any input.
Dave
Team Owner
Joined: Oct 2000
Posts: 38,897
Likes: 1,926
From: Washington Michigan
Numbers look good/correct for a January 26th-built car. Trans tag says it's an M-21 built January 18th, Diff housing was cast on November 4, 1964 and assembled on January 18th (4.11 Posi), bellhousing is correct. 
Thread Starter
Instructor
Joined: Nov 2005
Posts: 163
Likes: 3
From: Prior Lake Minnesota
How did you get so smart?
John Z,
You the man!! But where do you come up with all this knowledge? Can you fill us in on the "secret"? I'm sure I can pick something up that would help me with these numbers and others I may find in the future.
Dave
You the man!! But where do you come up with all this knowledge? Can you fill us in on the "secret"? I'm sure I can pick something up that would help me with these numbers and others I may find in the future.
Dave
Melting Slicks
Joined: Jul 2004
Posts: 2,867
Likes: 195
From: Maryland
Originally Posted by carmutt1
John Z,
You the man!! But where do you come up with all this knowledge? Can you fill us in on the "secret"? I'm sure I can pick something up that would help me with these numbers and others I may find in the future.
Dave
You the man!! But where do you come up with all this knowledge? Can you fill us in on the "secret"? I'm sure I can pick something up that would help me with these numbers and others I may find in the future.
Dave
Thread Starter
Instructor
Joined: Nov 2005
Posts: 163
Likes: 3
From: Prior Lake Minnesota
Question for JohnZ or anyone else
JohnZ,
You stated that the trans tag states it's a M-21, but the "Black Book" shows they didn't make an M-21 until 1966 and all 1965s had M-20? Is this another error in the "Black Book" or is this strange?
If you would like to see a picture of the VIN on the trans, I could send a picture of that.
Dave
You stated that the trans tag states it's a M-21, but the "Black Book" shows they didn't make an M-21 until 1966 and all 1965s had M-20? Is this another error in the "Black Book" or is this strange?
If you would like to see a picture of the VIN on the trans, I could send a picture of that.
Dave
Le Mans Master
Joined: Feb 2006
Posts: 6,048
Likes: 5
From: "cutesy" TN
Originally Posted by carmutt1
JohnZ,
You stated that the trans tag states it's a M-21, but the "Black Book" shows they didn't make an M-21 until 1966 and all 1965s had M-20? Is this another error in the "Black Book" or is this strange?
If you would like to see a picture of the VIN on the trans, I could send a picture of that.
Dave
You stated that the trans tag states it's a M-21, but the "Black Book" shows they didn't make an M-21 until 1966 and all 1965s had M-20? Is this another error in the "Black Book" or is this strange?
If you would like to see a picture of the VIN on the trans, I could send a picture of that.
Dave
Go here http://www.5speeds.com/muncie2.htm and read all about Muncie's.
Best website I've found on Muncie's.
Drifting
Joined: May 2006
Posts: 1,864
Likes: 148
From: Santa Barbara California
numbers
From the numbers posted by Carmutt how can you tell if the transmission is close ratio or not? I am going through the number conformation exercise myself and curious as to how to identify a M-20 vs a M21 without removing the transmission. I had been looking for an A,B or C letter at the end of the date code??
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Thread Starter
Instructor
Joined: Nov 2005
Posts: 163
Likes: 3
From: Prior Lake Minnesota
So JohnZ,
How could you tell from my trans tag (3857579) that mine is a M-21 instead of an M-20? I tried to do a google search on Muncie trans id tags, and couldn't find anything helpful. Looks like I have to rely on you again. I REALLY appreciate your knowledge and help.
Dave
How could you tell from my trans tag (3857579) that mine is a M-21 instead of an M-20? I tried to do a google search on Muncie trans id tags, and couldn't find anything helpful. Looks like I have to rely on you again. I REALLY appreciate your knowledge and help.
Dave
Team Owner
Joined: Oct 2000
Posts: 38,897
Likes: 1,926
From: Washington Michigan
Originally Posted by carmutt1
So JohnZ,
How could you tell from my trans tag (3857579) that mine is a M-21 instead of an M-20? I tried to do a google search on Muncie trans id tags, and couldn't find anything helpful. Looks like I have to rely on you again. I REALLY appreciate your knowledge and help.
Dave
How could you tell from my trans tag (3857579) that mine is a M-21 instead of an M-20? I tried to do a google search on Muncie trans id tags, and couldn't find anything helpful. Looks like I have to rely on you again. I REALLY appreciate your knowledge and help.
Dave