Correct torque converter for 68 charger 383 4bbl?

[StockMan]

I was told the convert was a slightly higher stall than the 3832bbl car.  Is this true?

Thanks

[tatrick2me]

If your car is an R/T it has the same converter as a 440 Charger R/T,440 Net R/T,440 GTX 383 RR or 383 BEE. It was a 10" 1800 RPM converter. All other B&C body cars got the 11" 1400 RPM converter. So its been said, from what I saw at the dealer when the cars where new. Until you pulled the cover you didn't know which one it had. Its the same way with 4speeds. My new 68 383 RR had an 18 spline input shaft. My new 69 HIME RR had 23.

[Ghoste]

And keep in mind that any engine making more torque will cause the same converter to stall higher than it would in an engine of lower torque.  Thusly the same converter can show two different stall speeds when used behind two different engines and both specs will be correct... for that engine.

[62 Max]

[quote

My new 68 383 RR had an 18 spline input shaft. My new 69 HIME RR had 23.

[/quote]


Don't get upset but you would never convince me of that.

[Ghoste]

If 23 spline clutch discs were short to the line I could easily see the plant sustituting the 18.

[62 Max]

Possibly one but the chances of the same person having two,I seriously doubt it.

[Nacho-RT74]

If your car is an R/T it has the same converter as a 440 Charger R/T,440 Net R/T,440 GTX 383 RR or 383 BEE. It was a 10" 1800 RPM converter. All other B&C body cars got the 11" 1400 RPM converter.

are you sure of that ? FSM books says stall was higher than that... ( BTW my car got as far I know from factory 10" on 400 4bbl... being a 74 is not an R/T )

we have discussed about that in the past and I think we never got a certain answer about, beside what FSM states and numbers there are on a WIIIIIDE rate.

[John_Kunkel]

No 727 ever had a 10" converter, the only two converters used in the 727 were the 10 3/4" or 11 3/4" (Often rounded off to 11" and 12" respectively).

A '68 383HP would have a 10 3/4" converter, the same one used on the 340 that year; this is considered a high-stall converter. The non-HP 383 used the same 11 3/4" converter as the 440

The chart below shows the '68 stall speed specs:

[StockMan]

Thanks.  Based on that chart it does appear that the 383-4bbl has a different converter than the 2bbl car.

[John_Kunkel]

The difference in stall speeds is partially due to the difference in diameters but also due to the difference in torque.

In the chart, the 383-4 and the 340 use the identical same converter but the difference in stall speeds is due entirely to the difference in power output of the two engines.

[69CoronetRT]

No 727 ever had a 10" converter, the only two converters used in the 727 were the 10 3/4" or 11 3/4" (Often rounded off to 11" and 12" respectively).

A '68 383HP would have a 10 3/4" converter, the same one used on the 340 that year; this is considered a high-stall converter. The non-HP 383 used the same 11 3/4" converter as the 440

The chart below shows the '68 stall speed specs:

As the car in question is a Charger 383-4, the stock converter would be the non-hp application.

[John_Kunkel]

I won't enter the technical debate over 5 horsepower but a '68 Charger with a 330 horsepower 383 is high performance as far as I'm concerned and the converter is a 10 3/4".

[Ghoste]

By part number, the 383 four barrel shares a converter with the 340 in 68 and the 383 two barrel shares with the 318 and 440.  The Hemi has a different number again.  That's by part numbers though, nothing else.

[69CoronetRT]

I won't enter the technical debate over 5 horsepower but a '68 Charger with a 330 horsepower 383 is high performance as far as I'm concerned and the converter is a 10 3/4".

John, no one knows trannys better than you but here's my line of thinking...the TC was a function of the engine assembly. The Charger with automatic did not get the 335 HP engine assembly. Therefore a 383 Charger would not have the HP TC. It would recieve the same converter as the P,D,C 383-4.

As Ghoste posted, the '68 parts book is no help as it does not distinguish between the HP and non HP converter like the '69 book does. The 69 book calls for the smaller 764 for BLRW models which came with the 383HP standard and the larger 586 for 383-4bbl P,D,C which would be the 383 non-HP assembly. This would be the same basic assembly that the Charger recieved with the exception of some things like exhaust manifolds.

Am I off base on this?

[John_Kunkel]

OK, I'll concede that 383-4 is a better choice of terms than 383HP but the fact remains that the 383-4 got the 764 converter while the 383-2 and 440 got the 359, this is reflected in the stall speed chart that shows the 440 with more torque has a lower stall speed than the 383-4 with lower torque. The 383 can stall higher with less torque because the converter is smaller and has a high-stall stator to boot.

The '69 is different because the 586 converter which was only used on the 318 in '68 replaced the 359 in '69 and later. Most rebuilders lump the 359 and 586 together into one number.

[John_Kunkel]

I've been rethinking this issue and I believe 69CoronetRT is right and I'm wrong; since the 383-4 installed in the Charger is basically the same as that installed in the C bodies it's unlikely that the 10 3/4" converter would have been installed in a C body.

So, to answer the question asked by the OP, the 383-2 and 383-4 would have used the identical same converter in a '68 Charger so any difference in stall speed between the two would be a result of the difference in power input.

The 10 3/4" with it's higher stall speed would have been reserved for the 383-4 in the RR, Coronet R/T and Super Bee.

[StockMan]

Although I'm all for sticking to factory specs, I think I'm going to go with the higher stall converter.  Your knowledge and perspective on this is appreciated.

[oldkimmer]

.............The 383-4  did indeed have the hi- stall converter in the land yachts....68-69-70.......the 440 cars A,B,C or E all had the large converter HP or not.....kim......

[daves68]

I'm having the same questions except we're talking 440. I have 3 converters and am unsure what they came from. Is there any way to tell what they are? Would like to use one of them but don't want to put the wrong thing in. Also, will a converter from a small block727 work in a big block727 application? One of them may be from a 318.

[John_Kunkel]

There is no BB or SB 727 converter, in some years they both used the same converter. Either one can be used if the matching flexplate is used.

The diameter is the major factor, the 10 3/4" has a wide ring gear and will generally stall higher than the 11 3/4" which has a narrow ring gear.

[daves68]

Thanks John. I have 3 of lying around and, for budget reasons, would like to use one if possible.  The only  numbers on them are as follows -   10 3/4- 4778,   11 3/4 - 2039,   11 3/4 - 0849.   Don't know if they are part #s or what.
Is there a way to tell the advertised stall from these? Or, should I just use the 10 3/4 and hope for the best?
Thanks,
Dave

[John_Kunkel]

I gave up a long time ago trying to make any sense from the numbers stamped in converters.
The smaller one would probably be the best choice but, as with any used converter, you take your chances.