Click here for production figures for the 1967 - 1971 Coronet R/T & Superbee!
Interested to know if your car is numbers matching? Lets take a look. First you need to check the VIN tag through the driver's side window on 1968 and newer cars. The 1967 and older cars have a tag on the driver's side door hinge area of the body. This is the VIN tag for my 1968 Coronet R/T!

The next thing to check for, is the fendertag, which is located under the hood on the inner apron, by the battery. This is the tag for my 1968 R/T. You can see that it has some rust damage. This tag is important, because it will tell us a lot of things about our car, such as build date, body color, engine, transmission, and many of the options the car came equipped with. The 68 and older tags are especially important, because they contain the shipping order number, which is the number stamped on the body.

Which brings us to where to look for the body numbers, to see if our car has been rebodied or not? There are two places to look on the 67-70 cars, one is on the front radiator support. It can be on the top of the support like mine, or on the back side facing the engine. The number you see starts with an "A" which stands for the assembly plant, in this case Lynch Road. The next digit is an "8" which stands for the model year - 1968. Next is a "W" which means Coronet body. The next six digits are the shipping order number, and you can see they match my fendertag. This same number is also stamped on the rear of the car under the weather stripping on the driver's side trunk area, for 1968 and newer. 1967 will be stamped on the rear bumper mounting area of the body. 1969 and newer cars have the last eight digits of the VIN instead of the shipping order number.
This is my 1969 Superbee VIN tag.

This is my 1969 Superbee fendertag. It is a St. Louis Assembly plant car, and they were good about putting inspection punches in the tag. Since these would be very hard to duplicate, they are a good indication you have an original tag and not a reproduction. The 68 and older tags were layed out quite differently than the 69 and newer ones. Also notice the crease across the upper left corner of the tag. This is there because the tag was secured by just one screw, coming down the line, and bent up by this corner. When the car passed final inspection, it was bent down and the other screw installed. Another indication of an original tag.

Here is the body stamping on my 1969 Superbee radiator support. You can see they transpose the "G" and the "9" around from the VIN. G stands for the St. Louis Assembly Plant, and 9 is the model year - 1969. The next six digits match the last six of the VIN. So we know this body matches the VIN and fendertag! Of course we're looking at it upside down in this view.

Another item to search for is the production broadcast sheet. It is a carbon copy of the sheet they built the car from. They are usually located under, or behind, the rear seat. They can also be under the front seats, above the glove box liner, under the carpet, or possibly anyplace in the car. I have my 69 Superbee sheet, but my 68 R/T was disintegrated under the passenger side front seat. All I found was tiny bits of it. This sheet is an important document for your car!

Click here for information on the unique Lynch Road fendertags. My 70 R/T is decoded here!

We now have the VIN, fendertag, broadcast sheet, and body numbers authenticated. Next is to check the engine and transmission to see they are the original ones for the car. 1967 and older did not have the VIN stamped on them, you then have only a date to go by. Starting in 1968, they stamped the VIN on the engine block and transmsion case. But first we will look at the engine ID pad. The 440 engine has this pad directly in front of the intake manifold on top. Looking at this one, the "D" stands for the series year, in this case 1968. Next is the engine displacement, 440 cubic inches. Then comes the assembly date of the engine, which is different from the casting date. The casting date is when the motor was poured at the foundry, which is much earlier then the assembly date. The assembly date is when they built the motor up at the engine plant, and this date will precede the scheduled build date of the car by a few days to a month or so. This one was assembled January 12, 1968. The "HP" means it was a Hi-Performance engine, a Magnum, SuperCommando, or TNT engine!

So far so good, but now we will look for the VIN! On 1968 big block engines, the VIN is located on the back curved part of the block where the transmission bolts on. Looking at this one, we find an "8" for the 1968 model year, then a "C" for the assembly plant, in this case, Jefferson, Michigan. They only built C-bodies there, so this motor came in a Fury, Chrysler New Yorker, or something like that. The next 6 digits are the last part of the VIN. So this motor isn't the original one for my 68 R/T, but it is the next best thing. It is the correct year, and the assembly date is exactly the same as my car's build date. If you look at my fendertag, the three numbers left of the shipping order number "112" stand for January 12, 1968.

Now we will turn our attention to the transmission. In 1968, the automatic is stamped on the bellhousing, directly across from the engine stamping. Looking at mine, we find an "8" for the 1968 model year. Then we find an "A" for the assembly plant, in this case, the Lynch Road plant. Next is the last six digits of the VIN. If we look at my VIN tag above, we see we have a match! So this is the original transmission for my 68 R/T! 4-speed's will have this on a machined pad on the side of the transmission, 1968 and newer.

On this side of the transmission, you will find the assembly plant code, part number, 10,000 calendar date, and the build sequence number-per day. The part number on this one 2801541 was used on 1967 and early 1968 440 HP engines. The 2345 julian date equals December 29, 1967. This corresponds with my 68 R/T's build date of January 12, 1968.

The 383 engine has the ID pad located in a slightly different location. It is below the distributor and right in front of the head. I'm using a little older engine for my example here, but the 67-71 engines are all the same. First we have a "V" which designates the model year this engine was for, which is 1964. Here are the letter's and years they stand for:
L = 1958
M = 1959
P = 1960
R = 1961
S = 1962
T = 1963
V = 1964
A = 1965 (they started over)
B = 1966
C = 1967
D = 1968
E = 1969
F = 1970
G = 1971
H = 1972
J = 1973
K = 1974
Starting in 1970, these letters were also the first digit of your paint code, and designated the first year that color was used. Example: TX9 - Black, introduced in 1963, FJ6 - Green Go, introduced in mid-year 1970. Getting back to our engine, the next two digits, 38 stands for 383, and is the displacement. They used two digits from 1961 until 1964, then in 1965 they used the three digit number, 361,383, 413, 426, 440. The numbers 6 9 is the date code, and designates June 9th, 1964 for the engine assembly date. The HP means, Hi-Performance engine, yes they had those way back then. Starting in 1969, you will sometimes see a HP2, all this means is, Hi-Performance and assembled on second shift.

Here is the passenger side of a 383 engine. You can see the casting number, up near where the head bolts on. This number is the same from 1959 - 1971, although 1965 had a 2532130 number, and 1970 had a 2899830 number. Below this, you see it was cast on dayshift, and looking at the clock to the right, around high noon. I am pointing to a machined pad, where your car's VIN number will be stamped, on 1969 and up cars. It will generally be the last eight digit's of your VIN, but could be the whole VIN depending on the assembly plant.

This is where you find the VIN stamped on 1969 and newer automatic transmissions. 1968 and newer 4-speeds are in a similiar location. This one is a 1972
C-body trans. from the Belvidere plant.

The engine heads also have a casting number and date code. The casting number will be on the bottom and top of the head. Here it is on the bottom. This is an open chambered head used from 1968-70. It is known as the 906 head, from it's casting number of 2843906. These were pretty good heads, with 2.08" intakes, and 1.74" exhaust valves, and decent ports.

This is the top of the head, showing the casting number and the date code. There is a clock towards the other end. These heads were used on all big blocks, not just the HP engines. The only difference was the use of heavier valve springs on the HP motors. They were reddish with a flat dampener.

There are many other parts and pieces that have part numbers or casting numbers, and date codes. Here is the distributor for my 1968 440 engine. You can see the part number 2875209 which you could look up in a parts book to identify, or in Galen Govier's part & casting numbers book. The next numbers 18 are the date code, and stand for the first week of the year of 1968. Which would be correct for my engine.

Hi-Performance engines in these years used a Carter AVS carburetor. These will have list a number stamped on the left front mounting horn. This one is kind of hard to read, but it says M7 which is the date code, and stands for the December 1967. Then comes the list number 4429S which correct for this engine.

These carburetors also came with a tag fastened to the top by a screw. These tags had the list number, a date code, and the last two digits of the part number, which was also on the broadcast sheet. This one is for the 383 Magnum engine in my 69 Superbee. The list number is 4682S the date code is 0349 or 34th day of 1969, and the large 95 is the last two digits of the p/n. If you look at the top right of my broadcast sheet, you will see that it matches. Only it is dated a little late for my car, as it was built December 19, 1968. Once the original parts are gone, they are very hard to replace!

Intake manifolds have a casting number and date code too. Here are some common casting numbers:
2531915 = 1968-69 340-4bbl.
3462848 = 1970 340-4bbl.
3512100 = 1971 340-4bbl. (spreadbore)
2205968 = 1967 383-4bbl.
2806301 = 1968-69 383-4bbl.
2806178 = 1967-69 440-4bbl.
2951666 = 1970-71 383-4bbl.
2951736 = 1970-71 440-4bbl.
Cast Iron Six Pack
2946275 = 1970 440-6bbl. (early)
2946276 = 1970-71 440-6bbl.
The date code, December 27, 1968, would make this intake correct for a January 1969 car.
An early cast iron 440 Six Pack intake!
This would be correct for a very early 1970 car.
Exhaust manifolds have a casting number and date code too! This casting number is used from 1967-69, but the date code tells us this one was cast on the 56th day of 1969. These years used this thin metal counter weight. In 1970, they went to a round heavy counter weight.

This is the oil pan used on the HP engines from 1966-69. It has a 402 stamped in it and you can see that is baffled, to help keep the oil from getting wrapped around the crankshaft. There was a flat metal piece, called a windage tray, sandwiched between the oil pan and the block as well. All this was meant to keep the oil in the pan, so the pump wouldn't go dry. If that happened, there go your bearings, and then disaster!

Mopar radiators are easy to identify, they have the part number right on top. Many cars have lost their original radiator over the years. There are lots of reasons for this, rust, leaking, damaged, running hot, etc. The standard radiator was a two core and 22" wide. Hard to believe that would keep that big ole 440 cooled? If you ordered an axle package, your cooling system was upgraded to Hemi specs., a larger 3 core 26" wide radiator with a shroud, and clutch fan. Not a bad deal when you throw in the Hemi suspension too! The bad part now is, if you need that Hemi radiator for your car, expect to pay big money! I lucked out and found this one for my 69 Superbee in a junk pile. I had to have it recored, but it was still cheaper than many I've seen for sale. The last two digits of the p/n are also on your broadcast sheet.

Did you know that even your hood latch is date coded? This one is dated the 345th day of 1968, which is correct for my 1969 Superbee, which was built on December 19, 1968.

I have seen cars for sale recently with the wrong console tops. The plastic lower part is the same for all years that used this type, but the top pieces were different. The shifter handle was also different, the 69-70 handles used a woodgrain knob, while the 68 and earlier shifter's did not.