69 dash tag decoding [Archive] - Chevelle Tech

: 69 dash tag decoding


69chevellesupersport
Oct 12th, 08, 10:55 PM
136379k368964

Don_Lightfoot
Oct 12th, 08, 11:28 PM
Well Jamie, this is about all you can tell from the VIN:

136379 - 69 Malibu 2 door hardtop V8.
K - Kansas City Assembly Plant.
368964 - Sequential serial number (Build Date should be December, 1968).

Hope this helps.

You might want to also post all the data on the trim plate.

SS69Chevelle
Oct 13th, 08, 1:36 PM
nothing in my list about that vin. would like to add the trim tag data if you don't mind. PM or post it here. the build week should be 12C based on where it falls in my list. Andy

69chevellesupersport
Oct 13th, 08, 5:56 PM
Ok here is the trim plate data

st69 13637 kan192946bdy
tr 756 72 bpnt
12c 09531 L

SS69Chevelle
Oct 13th, 08, 6:52 PM
Jamie, Thanks for the data. I will add it to my list. The paint code is an SS specific paint code and you can be pretty sure it was an SS originally. Do you know what the original trans is (auto or Manual). Also it has the infamous L on the tag which is a highly discussed and debated item, many believe it might be related to a body being an SS optioned body but there is no proof of this being totally the final answer. sounds like a good one to have. take care Andy

69chevellesupersport
Oct 13th, 08, 8:10 PM
Thanks Andy, I knew it was a ss my dad got the car from the original owner in 72 and it still has the original monico orange paint and black top specific to ss cars. Everything is original except the motor. My dad blew it up in the 80s and he past away in 05 so i dont really know what hp motor it came with he never told me. Thats what im trying to find out i think it was 325hp but not sure. Oh and i still have the original M21 four speed

69chevellesupersport
Oct 13th, 08, 8:12 PM
Heres a pic
http://dragtimes.com/images/15970-1969-Chevrolet-Chevelle.jpg

1969 El Camino Dan
Oct 13th, 08, 9:30 PM
Thanks Andy, I knew it was a ss my dad got the car from the original owner in 72 and it still has the original monico orange paint and black top specific to ss cars. Everything is original except the motor. My dad blew it up in the 80s and he past away in 05 so i dont really know what hp motor it came with he never told me. Thats what im trying to find out i think it was 325hp but not sure. Oh and i still have the original M21 four speed
Have you done any looking around for a build sheet? If it's that original, you may strike gold!
Nice Ride!! Love those 4 speeds.

Dan

69chevellesupersport
Oct 13th, 08, 9:51 PM
Yeah i have but havent found one but i did find the manual in the glove box. ha anyway i thought the vin told what engine..

qzjrd5
Oct 13th, 08, 11:12 PM
If it has the original M21 four speed trans, then it was either an L34 (350 HP) or an L78 (375 HP). The M20 was offered on the L35 (325 HP) and the other two as well.

If the car had the original engine, you can check the suffix code on the block.

If not, check the fuel line/sending unit. If there are two fuel lines coming out of the tank, (one 3/8" main line, and one smaller return) then it was a 325/350 HP car. (350 HP in your case if you have the original M21 trans).

If its a single 3/8"line and sending unit then it was a 375 HP car. This is of course assuming no one replaced the fuel line.

That can mostly verified by checking the fuel line clips, if they are set up for two lines, its not a 375 HP car, if they are set up for one line, then it was likely a 375 HP car.

Also, if the car has power steering, check the pulley PN. The deep groove pulley was only offered on the 375 HP car.

Again, unless the build sheet exists, you'll have a hard time proving this to anyone 100%, but in my case, these items made me a believer on my car.

Hope this helps,
Mike

69chevellesupersport
Oct 14th, 08, 12:27 PM
Thanks yeah it helped. I have the original tank and lines in it and it does have 2 lines coming out. Oh and im not positive thats a m21 i thought it came with all ss manual that year. What number you need to tell?

qzjrd5
Oct 14th, 08, 1:44 PM
There is a number stamped on the case that starts with "P". That number has the date code as well as the gear type inside.

The last alphabetical character tells the story....

If its an A, its an M20. If its a B, its an M21. If its a C, its an M22.

The experts on here will correct me if I am wrong!

Mike

d1_bradley
Oct 14th, 08, 3:02 PM
Does it have factory air conditioning and/or optional gauge package? If it has a factory tach, what is the redline?

qzjrd5
Oct 14th, 08, 3:45 PM
With the dual fuel lines, it seems to be a 325 or 350 HP car, so the AC wont matter. Neither will the redline on the tach. Both the 325 and 350 cars had AC as an option, and I believe the tach redlines were the same.

If it is an M21 or M22 trans it would be a 350 HP car though.

Not sure how you can tell the diff between a 325 or 350 HP car without the original engine aside from the trans? I know the air cleaner was different, but that could be easily changed.

Possibly a rear gear ratio code?

Mike

Bill Pritchard
Oct 14th, 08, 6:47 PM
Jamie,

Nice car :thumbsup: If your dad bought it from the original owner in 72, and the car hasn't had the front fenders off, there's a real good chance that a body broadcast sheet ('build sheet') may still be stuck to the inside of one or both front fenders. Open the doors all the way and shine a light in so that you can see the inside of the front fenders. You may see a piece of paper stuck inside there. If so, it is usually glued onto the fender in one spot. My car was that way. I used a long thin piece of sheet metal to slide between the paper and the fender and was able to remove the paper that way. A small piece of the sheet, about the diameter of a nickel, will stay stuck to the fender but the rest of the paper will come off.

69chevellesupersport
Oct 14th, 08, 9:51 PM
Really? Wow i would never think to look there. Ill check and get back to you on that.
It does have the tach and the redline starts at 5500. Its still works to i use it when i race.

69chevellesupersport
Oct 16th, 08, 9:12 PM
What numbers do i need off the trany its got so many..

qzjrd5
Oct 16th, 08, 10:02 PM
Look on the rear of the main case, passenger side. There should be two sets of numbers stamped into it. One is the VIN, the other is the serial number from the Muncie plant.....

From: http://www.gearzone.net/muncie2.htm

Reading Serial and VIN Numbers

Serial numbers for Muncie 4 speeds always begin with the letter "P". P stands for Muncie Plant. Not for passenger car as some self proclaimed specialists may think.......1969 to 1974 Muncies got a ratio designator at the end of the serial number. An example would be P4D23B. This equates to April 23, 1974, M21 ratio.


Month Code Chart


January Letter: A May Letter: E September Letter: P
February Letter: B June Letter: H October Letter: R
March Letter: C July Letter: K November Letter: S
April Letter: D August Letter: M December Letter: T

Ratio Code Chart


Letter: A M20 Ratio
Letter: B M21 Ratio
Letter: C M22 Ratio