1960's 727 trans verses 1980's 727 trans

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68 CUDA FORMULA S

68 CUDA FORMULA S

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I still need a 727 SB trans for this 1968 Barracuda with a 340 engine, there is a guy near me with a 727 SB trans that was pulled off a 360 motor from a 1984 2 wheel drive truck. Will this trans bolt up and work for what I need, I know I will have to go through the trans before it is installed but just want to know if there is a difference in model year trans's.
Thanks
Bob
 
66 CUDA said:
I still need a 727 SB trans for this 1968 Barracuda with a 340 engine, there is a guy near me with a 727 SB trans that was pulled off a 360 motor from a 1984 2 wheel drive truck. Will this trans bolt up and work for what I need, I know I will have to go through the trans before it is installed but just want to know if there is a difference in model year trans's.
Thanks
Bob
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I would get both if I were you.
In 1971 they introduced part throttle kickdown to the torque flights so it would kick down nicely at mid throttle at a cruise speed , kinda handy in traffic... so therefore a 1960s version wouldn't be that great unless you change the valve body to newer 71 n up style. hence both transmissions.Also it may have a numerically higher kickdown lever say a 4.2 or 3.8 which it be pretty good compared to a 2. something. The thing is is those later torque flights are also lock up Style and you might not want that ...or you might , better mileage...but less torque convertor choices.
If you can just buy a valve body then the early one will be fine but I would still get her later one for the parts.
I hope all that helps you in making your choice
 
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I do not have any trans right now, there was no drive train at all with this 68 Barracuda. It is a bucket seat floor shift car and I was just wondering if MA Chrysler changed the 727's in the 1980's. Will my shifter parts work on a 1984 trans and can I use 1968 cooler lines and is the trans mount still in the same location as the 1968 version? If I do go after this 1984 727 SB trans am I in for any surprises even though it came from a 2 wheel drive pick up truck?
 
Some RWD truck transmissions had short tailshafts compared to regular passenger car versions. (Might be in the longer wheelbase, 2-piece driveshaft applications.) 360 converter would also have counterweights welded on that won't be comparible with a 340.
 
Do not use a 66 or older. They require a different spline-count convertor, and the VBs are old-techc
I agree with MOPAROFFICIAL; 71s and up, are best. The TF sorta apexed in 71/72.
I don't have anything newer than 1980, and not interested in 'em either. IMO, they started a downhill spiral about that time.
 
dodge71demon said:
Lockup ?
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Lock up converter transmissions have the shaft with a smooth 3/4" tip. Converters don't interchange and you have to change out these parts as well as the valve body to use a conventional converter. It started in the very late '70's in both 904 and 727 Torqueflites..

Lock-up - non lock-up trans.jpg
 
So are you telling me to look for a 1971 up to 1979 727 SB trans from a car. Regardless of what year I find, I would have it gone through and it would receive a new 2400/2600 stall converter anyway.
 
not an expert but I don't believe all 727's in the late 70's and on were lockup possibly some trucks etc were not mainly used on cars again not an expert
 
66 CUDA said:
So are you telling me to look for a 1971 up to 1979 727 SB trans from a car. Regardless of what year I find, I would have it gone through and it would receive a new 2400/2600 stall converter anyway.
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It may have started in '78, but I believe it was most, but not all applications. One good thing about the later Torqueflites is that many 904s got a 2.74 low gear set! Not sure of which, most or if in all application. But a properly built 904 will work well behind a 340 and the car would be about .15 faster in the 1/4, if that's of any interest. But you'd also need a longer driveshaft and different trans yoke.
 
66 CUDA said:
Didn't the 1968 Barracuda formula S 340 automatic car only come with the 727 trans?
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Yes, 727 only. But unless you want or need to maintain originality, a 904 has been an option that many consider..
 
If I were to look for a 904 is there a particular date to keep an eye out for? Also is there a date somewhere on the trans so I can verify the trans I am looking at is what it says it is, on ether a 904 or a 727?
 
Get a copy of the "Chrysler Torqueflite A-904 & A-727 Transmissions" book by Tom Hand. It has most of the breakout dates for decoding the model and years in the back of the book.
 
Thank You that's a big help, nothing like having ammunition when your going to look at parts that you are not familiar with.
Thanks again
Bob
 
OK so I picked up a 1976 727 small block trans part#3898864 which tells me that it came out of a 1976 Dodge Truck 150,250,350. The guy that I bought it from said it came off of a 360 from a little red express truck. The only thing that I can see that I am going to need for it is a different tail shaft because there are no humps to mount the floor shifter bracket to, it has the long tail shaft. Is there anybody out there that has the tail shaft that I need? The guy that I bought it from says he has a few more 727's around and that he would check to see if any of them had the tail shaft I am looking for, but just in case he does not it would be good to know that someone else does.
Bob
 
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