Airy Cat Posted November 25, 2018 Share Posted November 25, 2018 Two differentials for Dyna Flow transmissions complete with torque tube: 1954 Buick Special M40, 1955 Buick Century M60. Located in Mariposa, CA. $140.00 each. 1 Link to comment Share on other sites More sharing options...
dustybonz Posted December 15, 2018 Share Posted December 15, 2018 Hello I'm interested in your 54' special differential. I'm looking to change my gear ratio on my 1941 Buick special sedanette 40 series. Do you know if that diff will work for that? Jake Link to comment Share on other sites More sharing options...
1939_Buick Posted December 15, 2018 Share Posted December 15, 2018 1 hour ago, dustybonz said: Hello I'm interested in your 54' special differential. I'm looking to change my gear ratio on my 1941 Buick special sedanette 40 series. Do you know if that diff will work for that? It will work great 😊 Sort of bolt in, but you will probably have to use your old torque tube. Guess the length is different. Can be hard to separate the drive shaft from the pinion shaft. Lots of info in http://www.1937and1938buicks.com/The-Torque-Tube/The-Torque-Tube.htm Link to comment Share on other sites More sharing options...
dustybonz Posted December 15, 2018 Share Posted December 15, 2018 Tons of info on the link. I read in another site that I can just change the carrier? Is the easy bolt in way you're talking about. Link to comment Share on other sites More sharing options...
1939_Buick Posted December 15, 2018 Share Posted December 15, 2018 (edited) 1 hour ago, dustybonz said: Tons of info on the link. I read in another site that I can just change the carrier? Is the easy bolt in way you're talking about. Yes, in a way, but read the tech articles. Some people replace the complete diff, with brakes etc & use the original 1941 torque tube. There are threads here on the forum about 1940's ratio changes Typical threads --> http://forums.aaca.org/topic/267259-buick-special-1948-rear-differential-ratio/ --> https://www.teambuick.com/forums/showthread.php?20920-rear-gear-swap Not really applicable to 1940 & later, but interesting http://www.1937and1938buicks.com/Technical-Tips/Technical-Tips.htm For 1939 and earlier machine work & more torque tube work is needed. Edited December 15, 2018 by 1939_Buick (see edit history) 1 Link to comment Share on other sites More sharing options...
dustybonz Posted December 15, 2018 Share Posted December 15, 2018 I'll consider swapping everything once I hear back from airy cat to see the condition of the diff he's selling. Not sure if I contacted him correctly to know if he received my reply to his sale post. Link to comment Share on other sites More sharing options...
Buicknutty Posted December 15, 2018 Share Posted December 15, 2018 I changed my '41 Roaadmaster's rear ratio to one from a '55 Century. Its' an upgrade that I would recommend to anyone who drives their car very much. Keith Link to comment Share on other sites More sharing options...
dustybonz Posted December 15, 2018 Share Posted December 15, 2018 Do I just reply to this quote to show I'm interested in the part or is there a way to send a email? Sorry I'm new to this Link to comment Share on other sites More sharing options...
1939_Buick Posted December 16, 2018 Share Posted December 16, 2018 (edited) 3 hours ago, dustybonz said: Do I just reply to this quote to show I'm interested in the part or is there a way to send a email? Sorry I'm new to this If you click on Airy Cats name you can send a message. He lasted visited this site on 8 Dec. As this---> https://forums.aaca.org/profile/80448-airy-cat/ Edited December 16, 2018 by 1939_Buick (see edit history) Link to comment Share on other sites More sharing options...
dustybonz Posted December 16, 2018 Share Posted December 16, 2018 Ok thanks. I'll wait for his response. And thank you for the links you sent. Very informative Link to comment Share on other sites More sharing options...
RiKi5156B Posted December 16, 2018 Share Posted December 16, 2018 I put a differential complete with torque tube from a 50 Special into my 40 Special,straight bolt in. The overall length is 1/4” longer than the 40. Link to comment Share on other sites More sharing options...
dustybonz Posted December 17, 2018 Share Posted December 17, 2018 I wonder if that will get the way of the fender skirts I'm planning on putting on. Don't want my tires to rub. Link to comment Share on other sites More sharing options...
RiKi5156B Posted January 1, 2019 Share Posted January 1, 2019 Been awhile but it’s the torque tube that’s 1/4” longer,can’t tell the difference,the wheels are centered in the wheelwell.,track width is the same. Link to comment Share on other sites More sharing options...
dustybonz Posted February 22, 2019 Share Posted February 22, 2019 Does anybody know if these items are still for sale Link to comment Share on other sites More sharing options...
dustybonz Posted April 8, 2019 Share Posted April 8, 2019 Are you still living in Mariposa? I'm interested but get no reply? Link to comment Share on other sites More sharing options...
B Jake Moran Posted April 8, 2019 Share Posted April 8, 2019 Airy Cat last visited this site February 2, 2019, so it's been awhile. He may not read his PM's, he may not read emails, just not sure. He is a BCA member. I just called him and his phone rang and rang so perhaps it's still a land line. PM me, and I will share that information OR if you are a BCA member, you can go to your Roster and he is on page 21. Link to comment Share on other sites More sharing options...
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