<VV> Powerglide interchange

shortle shortle556 at earthlink.net
Sun Apr 25 22:19:57 EDT 2010


Didn't the early 1960 PG have a cable that screwed into the case and not bolted in like the later ones? And does anyone know when that was changed? Pete?
Timothy Shortle in Durango Colorado


-----Original Message-----
>From: shortle <shortle556 at earthlink.net>
>Sent: Apr 25, 2010 8:16 PM
>To: whubbell at umich.edu, 'Tony Underwood' <tony.underwood at cox.net>, virtualvairs at corvair.org
>Subject: Re: <VV> Powerglide interchange
>
>The last PG's had a different throttle valve linkage attatchment.'67-'69 were different (I think-sorry Bill).
>Timothy Shortle in Durango Colorado
>Still with the original unmelted red plastic junction block on my '69 #5044
>
>
>-----Original Message-----
>>From: Bill Hubbell <whubbell at cox.net>
>>Sent: Apr 25, 2010 2:51 PM
>>To: 'Tony Underwood' <tony.underwood at cox.net>, virtualvairs at corvair.org
>>Subject: Re: <VV> Powerglide interchange
>>
>>Tony,
>>
>>Consider this - the point of GM's modifying the Powerglide was to
>>accommodate the higher torque of the 164 CID engines.  Your transmission
>>already had an issue which causes it to operate outside of factory specs.
>>This pre-existing problem may therefore be masking any problem that might be
>>caused by mating it to the 110hp engine.
>>
>>My point is that if we do not run the test with perfectly functioning parts
>>there will be additional variables introduced that will make it very
>>difficult to come to any accurate conclusions.
>>
>>Bill
>>
>>-----Original Message-----
>>From: virtualvairs-bounces at corvair.org
>>[mailto:virtualvairs-bounces at corvair.org] On Behalf Of Tony Underwood
>>Sent: Sunday, April 25, 2010 2:32 PM
>>To: virtualvairs at corvair.org
>>Subject: Re: <VV> Powerglide interchange
>>
>>At 11:02 AM 4/25/2010, Bill Hubbell wrote:
>>>I would say that Tony's situation does not answer the question. His 
>>>powerglide obviously has shifting problems to begin with and is 
>>>therefore a poor test vehicle.
>>>
>>>Bill Hubbell
>>
>>
>>Let's review:
>>
>>
>>>No problems so far... with a 50 year old 200,000+ mile  Powerglide
>>>that's never had a screw turned on it, but still doesn't seem to care
>>>that it has a 110 behind it instead of the 80hp it came
>>>with.
>>
>>
>>This means the transmission *did not care* that it had a 110 behind 
>>it.   It made no difference in the transmission's every day 
>>operation.   There was no difference at all between the 80hp engine 
>>and the 110hp engine as far as the transmission was concerned.
>>
>>THEN:
>>
>>I mentioned a quirk this Powerglide has...
>>
>>
>>>This particular Powerglide has had its odd quirks since day
>>>one, however...  like the strange shift issue:
>>>
>>>
>>>Downshift the transmission to LOW (like climbing a very steep grade
>>>and you wanna stop the transmission from constantly upshifting then
>>>downshifting again etc) and once you shift back into DRIVE it stays
>>>in LOW until you mash down HARD on the gas, whereupon it shifts into
>>>DRIVE.   Ease off the throttle and it shifts back down into LOW
>>>again.   Speed makes no difference, shift "reversal" issue does the
>>>same thing regardless of how fast you're going.  Stop, and it still
>>>won't upshift until you mash the gas hard enough to get into the
>>>kickdown which of course then downshifts the transmission back into
>>>LOW if you ease off.   When you're going 40 mph trying to clear this
>>>issue (hopefully) it becomes a bit of an adventure.   But it didn't
>>>take long to find a fix...
>>>
>>>Shift the transmission up into Neutral, then back into Drive, all is
>>>well again.    Like I said, it's done this since the first day I got
>>>the car 26 years ago.
>>
>>
>>
>>MY comments about the manual downshift quirk were a carry-over from 
>>the original comments about how MY experiences with an ancient 
>>Powerglide with a later larger engine seemed to make no difference in 
>>how the transmission functioned.
>>
>>The comment was also intended to perhaps prompt a reply from anyone 
>>who might have seen this sort of thing before.
>>
>>
>>Quirks or otherwise:    It behaves the same with the late model 
>>engine as it did with the 1960 80hp engine.
>>
>>
>>I believe that was the original question, wasn't it...?      ;)
>>
>>
>>
>>
>>tony..
>>
>>
>>PS:    As long as this 50 year old Powerglide is left in DRIVE and 
>>allowed to shift automatically, and not manually downshifted into 
>>LOW, it has NO shifting issues at all and behaves perfectly normally, 
>>80hp or 110hp.
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