MoPar 727 Guru/Expert needed: Six Pack/6BBL Question
#2657411
05/21/19 03:13 AM
05/21/19 03:13 AM
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The Black Car
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I have a Factory correct, I.E. part number correct, Six Pack/ 6BBL 727 Torqueflight transmission, that is date coded correct for the SPD of my car.
It has NO VIN stamped on the pad, but does have the correct Six Pack/6BBL PK Part numbers for a 6BBL 727.
The question I have is about the tail shaft. I was told by the guy that is rebuilding the 6BBL transmission that the tail shaft (which I believe to be original to this specific transmission) is from a C-body because it has "studs" mounted in it for the transmission mount. And the studs appear to be original. And my rebuilder says quote, "B, and E bodies did not come with studs for the transmission mount, they had bolts to mount". He has years of experience with only MoPar 727 transmissions.
My question is this: Did E and B body MoPar 6BBl transmission tail shaft mounts have bolts or studs? I have looked into this with owners and others with original 6BBL transmissions and this does seem to be true.
If so, my original Six Pack 727 seems to have come from a C-body......
Any thoughts or comments are appreciated.
Last edited by The Black Car; 05/21/19 03:16 AM.
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Re: MoPar 727 Guru/Expert needed: Six Pack/6BBL Question
[Re: A12]
#2657415
05/21/19 03:56 AM
05/21/19 03:56 AM
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The Black Car
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No,
The part number is: 3410627 it's for a 1970 V-code dated 9/69. Apparently it's from a C-body.
I'm asking in the A12 forum,...because there are a lot of knowledgeable people here.
Last edited by The Black Car; 05/21/19 04:02 AM.
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Re: MoPar 727 Guru/Expert needed: Six Pack/6BBL Question
[Re: The Black Car]
#2657416
05/21/19 04:20 AM
05/21/19 04:20 AM
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A12
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No,
The part number is: 3410627 it's for a 1970 V-code dated 9/69. Apparently it's from a C-body.
I'm asking in the A12 forum,...because there are a lot of knowledgeable people here. This was over on "For C-Bodies Only": (so you may be correct on what it is for............ I finally found,... after searching for a few years, the correct 1970 3410627 6BBL/SIX PACK, 727 Torqueflight for the 6BBL Fury GT. Most importantly, the transmission assembly date is 24 days before the GT's SPD, so now the complete drive train are part numbers and assembly date code matching. And the VIN pad is unstamped! A huge bonus for the car. Needless to say I'm excited for the car.
That quote is on page 11 midway down https://www.forcbodiesonly.com/mopa...n-starts-here-1970-6bbl-gt.22540/page-11 So but I'm no help when it comes to C-Body Mopars, I'm sure someone will chime in and pretty sure who they will be......... I'm betting 6bblgt will be one of them Mike (BTW, If you can read the trans number in the image below the "27" is transposed (yes a pun) and reads "72" )
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Re: MoPar 727 Guru/Expert needed: Six Pack/6BBL Question
[Re: A12]
#2657476
05/21/19 10:08 AM
05/21/19 10:08 AM
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6bblgt
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the correct number for a 1970 440+6 transmission is 34106 72 sorry, no help on the bolts (bolts are the "norm" for B/E/A bodies) VS. studs question but both threads are about the same car/transmission
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Re: MoPar 727 Guru/Expert needed: Six Pack/6BBL Question
[Re: 6bblgt]
#2657495
05/21/19 10:56 AM
05/21/19 10:56 AM
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moparx
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back in my junkyard ownership days, 1972-1984, we parted many, many chryslers, and some had bolts, some had studs. this also includes dodge trucks as well. i do not count myself as any kind of expert on anything, but this is just my life experience. this leads me to believe what was in the parts bin was used, but . these vehicles, after all, were crashed, or junked for a reason, and they relatively new at the time.
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Re: MoPar 727 Guru/Expert needed: Six Pack/6BBL Question
[Re: 6bblgt]
#2657507
05/21/19 11:19 AM
05/21/19 11:19 AM
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The Black Car
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the correct number for a 1970 440+6 transmission is 34106 72 sorry, no help on the bolts (bolts are the "norm" for B/E/A bodies) VS. studs question but both threads are about the same car/transmission Thanks Dan, I accidentally transposed the numbers. My 727 is PN 3410672. So, bolts are the norm for A/B/E. (because of the mount). And C-bodies have studs. (because of the mount). My 6BBL 727 transmission has studs on the tail shaft and came from Georgia (which is where my car came from), so it appears I have a 6BBL C-body 727, that is going in an original 6BBL C body. And they are both from Georgia,.....what are the odds of that? Cool.
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Re: MoPar 727 Guru/Expert needed: Six Pack/6BBL Question
[Re: The Black Car]
#2657575
05/21/19 01:31 PM
05/21/19 01:31 PM
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John_Kunkel
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The factory parts catalog verifies that the stud/nut wasn't used on the B and E-bodies.
The INTERNET, the MISinformation superhighway
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Re: MoPar 727 Guru/Expert needed: Six Pack/6BBL Question
[Re: John_Kunkel]
#2657577
05/21/19 01:45 PM
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The Black Car
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The factory parts catalog verifies that the stud/nut wasn't used on the B and E-bodies. Thank you for taking the time on this John, I appreciate it. When I got the 6BBL transmission I assumed it was from a Cuda or a Charger etc.....it appears that it is actually from a 6BBL C body.
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Re: MoPar 727 Guru/Expert needed: Six Pack/6BBL Question
[Re: The Black Car]
#2657624
05/21/19 04:19 PM
05/21/19 04:19 PM
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I have a Factory correct, I.E. part number correct, Six Pack/ 6BBL 727 Torqueflight transmission, that is date coded correct for the SPD of my car.
It has NO VIN stamped on the pad, but does have the correct Six Pack/6BBL PK Part numbers for a 6BBL 727......
Any thoughts or comments are appreciated. Since there is no VIN on this transmission case then there is no way to tell what it came out of. Is the case restamped with the Six pack part number? Why does it have the six pack part number with no VIN? Was the tail housing swapped on to this trans? Who will ever know either way?
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Re: MoPar 727 Guru/Expert needed: Six Pack/6BBL Question
[Re: NANKET]
#2657730
05/21/19 08:08 PM
05/21/19 08:08 PM
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Morty426
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I have a Factory correct, I.E. part number correct, Six Pack/ 6BBL 727 Torqueflight transmission, that is date coded correct for the SPD of my car.
It has NO VIN stamped on the pad, but does have the correct Six Pack/6BBL PK Part numbers for a 6BBL 727......
Any thoughts or comments are appreciated. Since there is no VIN on this transmission case then there is no way to tell what it came out of. Is the case restamped with the Six pack part number? Why does it have the six pack part number with no VIN? This transmission was the weak link in the drivetrain. I have a 70 Challenger R/T 440 SIXPACK automatic with Super High Performance axle package. The original transmission failed at 30K - was rebuilt It failed again at 60K - was rebuilt It failed again at 89K - was replaced I'm sure many others had it fail super early and got a replacement
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Re: MoPar 727 Guru/Expert needed: Six Pack/6BBL Question
[Re: Morty426]
#2657786
05/21/19 10:37 PM
05/21/19 10:37 PM
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62maxwgn
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I have a Factory correct, I.E. part number correct, Six Pack/ 6BBL 727 Torqueflight transmission, that is date coded correct for the SPD of my car.
It has NO VIN stamped on the pad, but does have the correct Six Pack/6BBL PK Part numbers for a 6BBL 727......
Any thoughts or comments are appreciated. Since there is no VIN on this transmission case then there is no way to tell what it came out of. Is the case restamped with the Six pack part number? Why does it have the six pack part number with no VIN? This transmission was the weak link in the drivetrain. I have a 70 Challenger R/T 440 SIXPACK automatic with Super High Performance axle package. The original transmission failed at 30K - was rebuilt It failed again at 60K - was rebuilt It failed again at 89K - was replaced I'm sure many others had it fail super early and got a replacement I've run a"lot" of transmissions very hard over the last 50 yrs,cars that were street driven and cars that were not,never had anything close to that !
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Re: MoPar 727 Guru/Expert needed: Six Pack/6BBL Question
[Re: 62maxwgn]
#2657838
05/22/19 01:03 AM
05/22/19 01:03 AM
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I have a Factory correct, I.E. part number correct, Six Pack/ 6BBL 727 Torqueflight transmission, that is date coded correct for the SPD of my car.
It has NO VIN stamped on the pad, but does have the correct Six Pack/6BBL PK Part numbers for a 6BBL 727......
Any thoughts or comments are appreciated. Since there is no VIN on this transmission case then there is no way to tell what it came out of. Is the case restamped with the Six pack part number? Why does it have the six pack part number with no VIN? This transmission was the weak link in the drivetrain. I have a 70 Challenger R/T 440 SIXPACK automatic with Super High Performance axle package. The original transmission failed at 30K - was rebuilt It failed again at 60K - was rebuilt It failed again at 89K - was replaced I'm sure many others had it fail super early and got a replacement I've run a"lot" of transmissions very hard over the last 50 yrs,cars that were street driven and cars that were not,never had anything close to that ! Sounds like he needed a different trans shop. LOL
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Re: MoPar 727 Guru/Expert needed: Six Pack/6BBL Question
[Re: 62maxwgn]
#2657842
05/22/19 02:04 AM
05/22/19 02:04 AM
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Morty426
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I have a Factory correct, I.E. part number correct, Six Pack/ 6BBL 727 Torqueflight transmission, that is date coded correct for the SPD of my car.
It has NO VIN stamped on the pad, but does have the correct Six Pack/6BBL PK Part numbers for a 6BBL 727......
Any thoughts or comments are appreciated. Since there is no VIN on this transmission case then there is no way to tell what it came out of. Is the case restamped with the Six pack part number? Why does it have the six pack part number with no VIN? This transmission was the weak link in the drivetrain. I have a 70 Challenger R/T 440 SIXPACK automatic with Super High Performance axle package. The original transmission failed at 30K - was rebuilt It failed again at 60K - was rebuilt It failed again at 89K - was replaced I'm sure many others had it fail super early and got a replacement I've run a"lot" of transmissions very hard over the last 50 yrs,cars that were street driven and cars that were not,never had anything close to that ! I know what you are trying to say but I have THREE 70 V code automatics and all THREE are missing their original transmissions. I have searched for 672 transmissions for 30 years - they pop up very rarely. The STOCK 672 just did not cut it. I've abused my share of 727s and it is best automatic IMO but for some reason the 672 got toasted quickly
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Re: MoPar 727 Guru/Expert needed: Six Pack/6BBL Question
[Re: Morty426]
#2657988
05/22/19 12:47 PM
05/22/19 12:47 PM
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John_Kunkel
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FWIW, the 672 is identical internally to the Hemi 671 except for the governor.
The INTERNET, the MISinformation superhighway
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Re: MoPar 727 Guru/Expert needed: Six Pack/6BBL Question
[Re: John_Kunkel]
#2658146
05/22/19 07:18 PM
05/22/19 07:18 PM
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Morty426
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FWIW, the 672 is identical internally to the Hemi 671 except for the governor. Good to know - I just picked up a 671
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Re: MoPar 727 Guru/Expert needed: Six Pack/6BBL Question
[Re: 71GTX471]
#2658171
05/22/19 08:20 PM
05/22/19 08:20 PM
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Morty426
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Do the last 3 digits of the part# designate Hemi 671 & 6pk 672 for all years or only 70. Only 70 Off the top of my head I know 850 is 71 Sixpack and 544 is 68 Hemi
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Re: MoPar 727 Guru/Expert needed: Six Pack/6BBL Question
[Re: 6bblgt]
#2658957
05/25/19 04:34 AM
05/25/19 04:34 AM
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The Black Car
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I'd talk to who you got the transmission from ****** if any info is known about the engine that used to reside in front of it I got my 672 back from the rebuilder today. Looks great, should work well in the car. Has upgraded bands, friction discs and bushings, 4 set planetaries etc,.but basically a stock 6BBL build. Asked the seller about my 6BBL transmission. My 6BBL, #672 transmission came from a wrecking yard in Georgia. My 6BBL car came from a wrecking yard in Georgia as well. The casting dates on the main case are 05/69, and on the tail shaft (which is C-body Specific) are 05/69. The assembly date for the 672 is 9/1969. My 6BBL car's SPD is 10/15/1969. It's possible it could be a warranty replacement 6BBL specific transmission for a C-body, or the tail shaft just happens to be correct. Whatever the case, it works for me. Winner, winner chicken dinner. It's better than having a 6BBL 727 from a Road Runner IMHO.
Last edited by The Black Car; 05/25/19 05:12 AM.
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Re: MoPar 727 Guru/Expert needed: Six Pack/6BBL Question
[Re: David1971]
#2659384
05/26/19 04:35 PM
05/26/19 04:35 PM
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John_Kunkel
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Service replacements had no VIN, dealers were required to stamp a VIN in replacements but few did. One purchased directly from the parts counter for non-original installation obviously would never get a VIN stamped.
The INTERNET, the MISinformation superhighway
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Re: MoPar 727 Guru/Expert needed: Six Pack/6BBL Question
[Re: David1971]
#2659425
05/26/19 07:41 PM
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Morty426
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What does the absence of the VIN on the pad indicate? A service replacement? Could sand blasting the case have caused the VIN to disappear? I thought all 70's era transmissions got VIN's stamped on the case whether it was destined for a passenger car or truck. Last year I bought a 1970 U-code Cuda with its original 440 engine. But the 727 transmission has a 1975 part number and date code. There is no VIN on the pad. It was DOA and needs to be rebuilt.
I am not sure whether it is a worthwhile endeavor to find a correct 670 transmission for my Cuda. Did the exterior design of the case change from 1970 to 75? Are there any noticeable visible differences? I could always get my transmission rebuilt to 670 specs.
Whats the availability like now on 670 TorqueFlites?
A 670 is a lot easier to find than a 671 or 672. As for case differences I doubt there are any major differences. It's really up to you if you care about the correct part number or not.
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Re: MoPar 727 Guru/Expert needed: Six Pack/6BBL Question
[Re: Morty426]
#2889535
02/17/21 09:52 AM
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Gtxxjon
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Nice thread Guys! My 0672 trans has NOT got the hemi wide-drum inside, is this correct for a late 69 trans? Heavy duty 4 pin planets but stock looking front drum and band. Many thanx for any help with this. Its not just the part number as with 440 blocks but the internals are H/D. I was toying with an upgrade to 1971 internals like my 71-GTX has? Better drum stability as I have several pre 71 drum failures... Gtxxjon UK
Last edited by Gtxxjon; 02/17/21 09:55 AM.
Carpe diem, quam minimum credula postero, thanx Horace!
There’s no point trying to fix stuff that ain’t broke,,, 'but if ain’t broke',,, you is not trying hard enough...
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Re: MoPar 727 Guru/Expert needed: Six Pack/6BBL Question
[Re: Gtxxjon]
#2889556
02/17/21 10:38 AM
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Nice thread Guys! My 0672 trans has NOT got the hemi wide-drum inside, is this correct for a late 69 trans? Heavy duty 4 pin planets but stock looking front drum and band. Many thanx for any help with this. Its not just the part number as with 440 blocks but the internals are H/D. I was toying with an upgrade to 1971 internals like my 71-GTX has? Better drum stability as I have several pre 71 drum failures... Gtxxjon UK Please explain/describe your front drum failures.
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Re: MoPar 727 Guru/Expert needed: Six Pack/6BBL Question
[Re: Gtxxjon]
#2890614
02/19/21 04:42 PM
02/19/21 04:42 PM
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Nice thread Guys!
My 0672 trans has NOT got the hemi wide-drum inside, is this correct for a late 69 trans? Heavy duty 4 pin planets but stock looking front drum and band.
Many thanx for any help with this.
Gtxxjon UK That part numbered trans would have come with the wide drum and band, and all the other related parts. Thy were swapped out for some reason. A parts failure, a rebuilder that couldn’t get the correct band, or someone “borrowing” the expensive parts and replacing with standard parts. “He will never know”
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Re: MoPar 727 Guru/Expert needed: Six Pack/6BBL Question
[Re: NANKET]
#2891081
02/20/21 03:21 PM
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John_Kunkel
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Lots of the Hemi internal parts were swapped out for various reasons...availability of replacement parts or the realization that those parts weren't any better than the lesser units. The then-taunted wide drum and band and the 5.0 lever are now recognized a being redundant; hardly anybody uses them anymore.
For correct restorations, only the case is needed.
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