My wife's '54 has a non-original cast iron Powerglide in it. It has an incorrect shift pattern, going PRNDL instead of PNDLR. I have retrieved the numbers from the back of the case in hope that someone can tell me what it was made for and when:
Left side
H4 1
Right side
3742352
* GM 6
I put an asterisk above to represent a symbol which could be some kind of script X or maybe it really is an asterisk.
The transmission works well, except for upshifting very early. It always shifts up at 10-15MPH, regardless of throttle position. Someone told me that this may be a transmission which requires a vacuum connection to control it, which may be missing because the car did not have it originally. When shifted manually, the transmission works fine. No slipping, shifts are clean. If left in D, it does downshift when you stop, then shifts back up at low speed every time. I have once or twice heard a noise when putting it into park, but not lately (seemed to be related to moving the handle slowly, maybe I've adapted). When under there to collect the numbers, I noticed a hard silver wire, maybe 3/32" diameter, about 4" long, hanging down from the shift linkage. The car has an original-type shifter.
- Wayne NCRS 30311
Left side
H4 1
Right side
3742352
* GM 6
I put an asterisk above to represent a symbol which could be some kind of script X or maybe it really is an asterisk.
The transmission works well, except for upshifting very early. It always shifts up at 10-15MPH, regardless of throttle position. Someone told me that this may be a transmission which requires a vacuum connection to control it, which may be missing because the car did not have it originally. When shifted manually, the transmission works fine. No slipping, shifts are clean. If left in D, it does downshift when you stop, then shifts back up at low speed every time. I have once or twice heard a noise when putting it into park, but not lately (seemed to be related to moving the handle slowly, maybe I've adapted). When under there to collect the numbers, I noticed a hard silver wire, maybe 3/32" diameter, about 4" long, hanging down from the shift linkage. The car has an original-type shifter.
- Wayne NCRS 30311
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