54 Cast Iron Powerglide Tail Extension Bushing source?
I have searched high and low but can't seem to find a source for the tail shaft housing bushings for the stock 54 powerglide. To be specific, I'm looking for the bushings that contact the inside of the tail housing and the outside of the driveline yolk. There is one fore and one aft within the tailshaft extension housing. I purchased some in a kit from a transmission shop but they weren't even close to the correct size. The shop didn't offer an alternative. Anyone have a source? Thanks. Eric
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Re: 54 Cast Iron Powerglide Tail Extension Bushing source?
mic the od and id of your old bushings and i'll go thru my stash. don;t recall where i got the ones for my 54 PG. that was about 30 years ago. mike -
Re: 54 Cast Iron Powerglide Tail Extension Bushing source?
i just looked up the bushing in the 53-54 parts catalog and it lists but one bushing in the tail housing. group 4.104 part # 3691924 that states its 2-1/8" OD and 5/8" long. do those dimensions sound correct? mikeComment
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Re: 54 Cast Iron Powerglide Tail Extension Bushing source?
Mike and Eric-------
In Appreciation of John HinckleyComment
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Re: 54 Cast Iron Powerglide Tail Extension Bushing source?
Mike and Joe, I found the same info in my 53-54 catalog but the size is not correct. I also noticed there is an * next to the part number but I couldn't find its meaning anywhere in the catalog. My bushings are roughly 1" x 1 7/8" OD and 1 3/4" ID. I've attached two photos for reference. By the way, the part number on the extension casting is 370612# (# = 8 or 6, I cant tell) Thanks, Eric
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Re: 54 Cast Iron Powerglide Tail Extension Bushing source?
Eric------
Other than the original number Mike mentioned above, I can't find any other bushing ever available for 53-54 Corvette Powerglide extension housing. I've even checked parts groups where it would be unlikely to be found on just the off-chance that it was assigned to some atypical parts group.
By the way, the extension housing casting number is 3706126. This housing was used only for 1953-54 and 1955 6 cylinder Corvette applications. So, it's a pretty "rare bird". Also, it was sold in SERVICE only complete with installed bushings. It might be that was the only way that GM SERVICED the bushings. It seems unlikely but it is a possibility. In any event, even if GM never sold the bushings separately, I'm sure the aftermarket would have had them available. This type of bushing is fairly common. It seems unlikely to me that the size used for the Corvette extension housing would have been unique to that application.
To find a part like this, I think your best bet is to find a guy that specializes in rebuilding old Powerglides. I think there's one guy that advertises in the Driveline. Also, Hemmings Motor News might yield sources.In Appreciation of John HinckleyComment
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Re: 54 Cast Iron Powerglide Tail Extension Bushing source?
Joe, Thanks for your time in researching this matter. There is no doubt this is the correct extension so I suspect you are correct in regards to the extension being sold as an assembly with the bushings installed. The way they are installed leads me to believe they weren't intended to be replaced. I suspect this extension was only available for the cast iron powerglides that were fitted to the 6 cylinder engines, thus 53-54. I will try your suggestions to locate the bushings. Thanks again, EricComment
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Re: 54 Cast Iron Powerglide Tail Extension Bushing source?
Eric------
Yes, you definitely have the correct extension housing for your application; the casting number verifies that. Plus, this extension housing was used ONLY for 1953-54 Corvettes and 1955 Corvettes with 6 cylinder. It has no other Chevrolet applications.In Appreciation of John HinckleyComment
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Re: 54 Cast Iron Powerglide Tail Extension Bushing source?
Eric-------
One more thing: when you replace these bushings you want to be extremely careful that you don't damage the extension housing. While I'm not really into C1 parts, these things have got to be pretty difficult to come by.In Appreciation of John HinckleyComment
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Re: 54 Cast Iron Powerglide Tail Extension Bushing source?
Joe, Thanks for the cautionary advice. My research revealed they are indeed rare so I checked with a local machinist and foundry to see about having a couple made. The estimated cost to start the process was in the thousands so I declined to proceed. The casting wasn't too expensive; it was the setup for machining the flange and bushing journals to ensure they were aligned properly that were expensive. The machinist I contacted was the same one that was able to re-sleeve the bore for the governor shaft in my transmission when nobody else would even consider the job. He's quite capable but didn't want to say he could do the job; and I don't have the kind of money it would take to pay him for experimental work. Thanks again for your assistance; I always appreciate your knowledge. EricComment
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Re: 54 Cast Iron Powerglide Tail Extension Bushing source?
eric try northwest transmissions in winchester ohio 1 800 327 1955. tell them "chevy Bruce" sent you. bruce is a good friend in the VCCA. mikeComment
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Re: 54 Cast Iron Powerglide Tail Extension Bushing source?
The housing and tailshaft are be reproduced but still are expensive....
1954 Corvette #3803 - Top Flight 2012, Bloomington Gold 2012,
Triple Diamond Award 2012, Gold Concourse Award 2012, Regional and National Top Flight 2014
1954 Corvette #3666 - "The Blue Devil" - Pennant Blue - restoration started
1957 Corvette - FI 3 sp - Black and SilverComment
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Re: 54 Cast Iron Powerglide Tail Extension Bushing source?
http://www.autotran.us/index.html This guy has all the Cast iron powerglide parts. I have used him many times and he is great. Good Luck, JoeComment
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