Hey guys !! I'm trying to find out if my car came with a 18 or 23 spline tranny. On the fender tag it says it came with a 4 speed not if it's a 18 or 23 spline...how do I find out ?? Thanks !!

1967 coronet rt
440 4spd Dana 60

all '67 440 & HEMI cars were 18-spline

A guy told me the 3 on the fender tag meant it had a 23 spline ....when I did my research the 3 just means it came with a 4 speed m/the....how do I confirm it did ??

Don't listen to that guy. You could not get a 440 engine and 4 speed in a b-body that was a 23 spline. They did not make it.

A 727 and a 904 are both code 5

The highest number code for a trans is a 5, there is no 8 for an 18 spline as your friend would,have you believe.

I agree !!!! I thought that the car came with a 18 4 speed also ....there must be a number or code somewhere that confirms that right !! ??

Yes, the broadcast sheet will tell you the exact transmission in your car. Fender tag and certicard have only the 3 that says 4 speed manual. Another great case for a parts book, it will tell you the specific parts you car and engine size came with: gears, input shaft, front bearing retainer, bellhousing, clutch disc, throw out bearing and sleeve.

Now for an automatic we should all know that there are no 904's behind big blocks.

Talking b-bodies here:
A 66-67 273 had a 904
A 66-67 318 had a 727
A 68-70 318 had a 904
All BB automatics have a 727
A383 2 bbl has a 3 disc high gear drum
A383 4 bbl has a 4 disc high gear drum
All 426 hemi's have a special 727 trans with a 5 disc high gear drum wider 2nd gear band and special parts around it for it to fit in there.

On the fender tag 66-68 for trans for all the different transmission listed above there would be a code 5, denoting automatic, not the specific one. Here is why.

What is the purpose of the fender tag? Why is it there? It tells what the body of the car is. So it only needs to say automatic or manual so the correct tunnel, welded linkage bracket on frame rail, and holes for the clutch pedals are put into the body when building it. Later on the build sheet tells the specific trans, pedals, rear axle to go in the car.

What is the certicard for? Why does it exist? It is for when you go in for warranty work, they put your card in the machine, lay a work order on top and slide the handle across it to print all that info on the work order for your car. Just like a credit card machine pre 1988, you remember those don't you?

No , there is no code , it's a FACT , 440 in any body platform with a 4 speed transmission automatically gets an 18 spline HEMI 4 speed. now there is nothing saying the trans was not swapped out .

If I don't have the build sheet .....what do I do ?

Don't worry about it, it came with an 18 spline, check the part number on the trans or pull the inspection cover to see if you can see the input to verify there is an 18 in it now.

the trans was swapped apparently it now resides in a 70 hemi RR.we knew the trans we had in the car wasnt #s matching but were told it could have been a 23spline which i doubted also.this is my sons car now i bought it 25yrs ago and kept it in the family....it only had 2previous owners and 32XXX orig miles.

There are no numbers on the side of the trans that will tell you it is an 18 spline, other than a partial VIN number on 68 and newer that will matchup with the full VIN of a 440 or 426 powered car.

No trans part number?

I see stamped numbers, can you inform us which one tell us if it is a 18 or 23 spline?

There is a partial VIN number
A trans model number: PP833
A 10,000 day calendar build date: 3155 (March 18th 1970)
A consecutive build number: 0077

There is (was) a large stencil painted on 3 digit number that is the last 3 of the part number, but not always remaining for us to read today. Not too,sure that every year of the 833 trans had that painted number.

The cast in in raised numbers are for the individual pieces but they do not define the assembled transmission.

OK, I never remember how they decode and I know an automatic does have a specific part number on them, so I kinda assumed it was the same with a 4 speed. Thanks for the info.

Nothing you can do .

The one casting number that can tell you whether the trans is 23 spline or 18 spline in 68 and 69 only, on B/C bodies, is the tailshaft casting number .... ASSuMEing the trans has never been monkeyed with ... the tailshaft casting is different between the 18 spline and 23 spline because of the size of the 308 bearing and only the Hemi 4 speed in 68 and 69 had 308 bearings .

We know its 18 spline but would the IBM card still available from Chrysler Historical define which transmission.

no, the IBM card will have the same sales code numbers (or portion of) as the fender tag & cert-I-card "393" - 4 speed manual transmission

there is only one available 1967 440 4-speed transmission & it has an 18-spline input shaft

the broadcast sheet will show "394" for the 18-spline 4-speed

IBM card is on its way and he found bits and pieces of the broadcast sheet..................will update with any new info.

What new info would you be expecting ?