Powerglide transmission - Output shaft length
#1
Intermediate
Thread Starter
Powerglide transmission - Output shaft length
Dear friends,
I am converting a passenger car (Bel Air) 1960 cast iron powerglide transmission to a Corvette application (1960 Corvette). I have the correct tailshaft housing with the 3 bossings to attach the shifter. My PWG transmission + engine fit perfectly on my 1960 frame. My Corvette tailshaft housing (Cast. N°3726595) is about 3" longer than the passanger car tailshaft housing. Consequently: The transmission output shaft does not exit from the output shaft. The slip yoke (The long one, for Corvette), when attached to the drive shaft, is only inserted over 1" 1/4 on the transmission output shaft: Not enough. It should be at least 3". I have never found any reference to Corvette specific cast iron PWG output shaft in my documentation and I could not identify any at transmission specialists (With or without planetary gear). Is the cast iron Corvette PWG output shaft normally longer than passenger cars' ? Do you know where to find any ? THANKS !
I am converting a passenger car (Bel Air) 1960 cast iron powerglide transmission to a Corvette application (1960 Corvette). I have the correct tailshaft housing with the 3 bossings to attach the shifter. My PWG transmission + engine fit perfectly on my 1960 frame. My Corvette tailshaft housing (Cast. N°3726595) is about 3" longer than the passanger car tailshaft housing. Consequently: The transmission output shaft does not exit from the output shaft. The slip yoke (The long one, for Corvette), when attached to the drive shaft, is only inserted over 1" 1/4 on the transmission output shaft: Not enough. It should be at least 3". I have never found any reference to Corvette specific cast iron PWG output shaft in my documentation and I could not identify any at transmission specialists (With or without planetary gear). Is the cast iron Corvette PWG output shaft normally longer than passenger cars' ? Do you know where to find any ? THANKS !
#2
Power glide conversion
Dear friends,
I am converting a passenger car (Bel Air) 1960 cast iron powerglide transmission to a Corvette application (1960 Corvette). I have the correct tailshaft housing with the 3 bossings to attach the shifter. My PWG transmission + engine fit perfectly on my 1960 frame. My Corvette tailshaft housing (Cast. N°3726595) is about 3" longer than the passanger car tailshaft housing. Consequently: The transmission output shaft does not exit from the output shaft. The slip yoke (The long one, for Corvette), when attached to the drive shaft, is only inserted over 1" 1/4 on the transmission output shaft: Not enough. It should be at least 3". I have never found any reference to Corvette specific cast iron PWG output shaft in my documentation and I could not identify any at transmission specialists (With or without planetary gear). Is the cast iron Corvette PWG output shaft normally longer than passenger cars' ? Do you know where to find any ? THANKS !
I am converting a passenger car (Bel Air) 1960 cast iron powerglide transmission to a Corvette application (1960 Corvette). I have the correct tailshaft housing with the 3 bossings to attach the shifter. My PWG transmission + engine fit perfectly on my 1960 frame. My Corvette tailshaft housing (Cast. N°3726595) is about 3" longer than the passanger car tailshaft housing. Consequently: The transmission output shaft does not exit from the output shaft. The slip yoke (The long one, for Corvette), when attached to the drive shaft, is only inserted over 1" 1/4 on the transmission output shaft: Not enough. It should be at least 3". I have never found any reference to Corvette specific cast iron PWG output shaft in my documentation and I could not identify any at transmission specialists (With or without planetary gear). Is the cast iron Corvette PWG output shaft normally longer than passenger cars' ? Do you know where to find any ? THANKS !
Thanks Katch
#3
Intermediate
Thread Starter
Hi Katch,
Thanks for your proposal. I have made significant progress meanwhile and I have not changed my mind on my conversion. However, converting passenger Powerglide to Corvette application is not so easy and it has been quite a long journey for me (Located in France ...). Additionally, this is not as well documented as many other technical topics. Here are the specific parts I identified: Tailshaft housing (hard to find) - Output shaft (Hard to find - Need to open your powerglide to make the change - Disassembly / re-assembly and adjustments are well described in passenger or Corvette service manuals) - Oil dipstick and oil dipstick tube (easy to find) - Shift lever on transmission (Easy to find) - Shitfer rod (Hard to find - If you have any reliable source, please let me know. I am about to make one by myself) - Neutral safety switch (Easy to find) - Support bracket on frame (Easy to find). I know that the torque converter is also specific (Flywheel as well ?), but I did not convert mine. If you have specific issues, I'll try to help.
Bruno
Thanks for your proposal. I have made significant progress meanwhile and I have not changed my mind on my conversion. However, converting passenger Powerglide to Corvette application is not so easy and it has been quite a long journey for me (Located in France ...). Additionally, this is not as well documented as many other technical topics. Here are the specific parts I identified: Tailshaft housing (hard to find) - Output shaft (Hard to find - Need to open your powerglide to make the change - Disassembly / re-assembly and adjustments are well described in passenger or Corvette service manuals) - Oil dipstick and oil dipstick tube (easy to find) - Shift lever on transmission (Easy to find) - Shitfer rod (Hard to find - If you have any reliable source, please let me know. I am about to make one by myself) - Neutral safety switch (Easy to find) - Support bracket on frame (Easy to find). I know that the torque converter is also specific (Flywheel as well ?), but I did not convert mine. If you have specific issues, I'll try to help.
Bruno
Last edited by Projet1960; 04-01-2014 at 12:06 PM.
#4
Team Owner
Member Since: Mar 2003
Location: Greenville, Indiana
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The '55-'57 pass car powerglides are the same length as the Corvette. In '58, starting with the '58 X frame pass cars, the Powerglide (and 3 speed/TurboGlide) output shaft/housings were shortened some. Three inches sounds about right. The Corvettes remained the same length as previous.
You need the '55-'57 pass car output shaft to go with the Corvette housing.
You need the '55-'57 pass car output shaft to go with the Corvette housing.
Last edited by MikeM; 04-01-2014 at 12:18 PM.
#6
Power glide conversion
Would be appreciated. Longest winter since 1983, hope your having better luck with your weather.
Thanks Katch