AHa Posted April 10, 2011 Share Posted April 10, 2011 I looked at what appears to be an overdrive unit recently and was wondering if anybody can help with a liitle more info. I don't have much info, I didn't have much forsight. It was attached to a driveshaft, I think enclosed. It was about the right size for an overdrive. I believe it may have been shifted by cable. Any of this sound familiar? Link to comment Share on other sites More sharing options...
Jon37 Posted April 11, 2011 Share Posted April 11, 2011 What is the question? Do you wonder if this one will fit your car? Or did you see one for sale and want to know what it fits, so you can sell it? Or are you just curious to know if what you saw was an overdrive? Link to comment Share on other sites More sharing options...
R Walling Posted April 11, 2011 Share Posted April 11, 2011 There is a company called Gear Vendor that makes one that is a after mart. part that can be put on most cars and trucks by shorting the drive shaft. Link to comment Share on other sites More sharing options...
AHa Posted April 11, 2011 Author Share Posted April 11, 2011 I know its a stretch with limited input, but I was wondering, could this be an overdrive? I've heard of units that fasten to the driveshaft. This one was pretty rusty and I didn't see any identifying marks altho I didn't look real close. I have two cars that I could use it on. Could it be something else? I am thinking about buying it to use but I don't really know anything about it. The guy who has it doesn't know. He suspects that it is an overdrive or perhaps a two speed of some sort. Any ideas? Link to comment Share on other sites More sharing options...
Ivan Saxton Posted April 11, 2011 Share Posted April 11, 2011 They used to make such things aftermarket for T and A model Fords. I picked up a couple at one place where I got a 1914 Fiat Tipo Zero engine; but I had no use for them and gave them to the son of a friend, who proved to be utterly graceless. I have no idea if they ever went back on cars. Link to comment Share on other sites More sharing options...
alsancle Posted April 11, 2011 Share Posted April 11, 2011 A picture is worth a thousand words. Link to comment Share on other sites More sharing options...
CarlLaFong Posted April 11, 2011 Share Posted April 11, 2011 Could it be an overdrive? Yes. Could it be an agricultural implement? Yes Could it be non automotive? Yes. Could be anything. We're going to need a picture Link to comment Share on other sites More sharing options...
AHa Posted April 11, 2011 Author Share Posted April 11, 2011 Sorry, I didn't have enough sense to take any pictures. I did get the guys business card so I can go back and get it. The driveshaft that it was attached to was splined on one end as if it slid into the trans or rear, no u joint. Link to comment Share on other sites More sharing options...
Dave Mellor NJ Posted April 12, 2011 Share Posted April 12, 2011 At the risk of being of opening my mouth and removing all doubt,(rather than keeping it closed and being thought a fool) It could be an underdrive unit from a 28-9 Model AA. Those early 1-1/2 tonners came with the standard 3 speed and when fully loaded had trouble negotiating hills and such so they offered this auxiliary trans behid the regular unit with a kickdown foot switch on the floor that pulled a lever. In '30 they came out with a 4speed (granny gear). If this looks somewhat like a peanut then that's what you have. Link to comment Share on other sites More sharing options...
Guest Foggy norm Posted April 12, 2011 Share Posted April 12, 2011 Transfercase?? Link to comment Share on other sites More sharing options...
AHa Posted April 12, 2011 Author Share Posted April 12, 2011 Thanks for all the input. It is not shaped like a peanut. It is kinda sqaure-ish, and mounted pretty much in the center of the drivshaft. With the spline on the end of the drivshaft, I'm wondering if it might have come out of an enclosed drivshaft vehicle? I can't remember, but does the u joint fit on a yoke that slides over a splined driveshaft end on a 30's Chevy? Link to comment Share on other sites More sharing options...
Dave Mellor NJ Posted April 13, 2011 Share Posted April 13, 2011 If it attaches to a closed driveshaft it needs to have a universal housing at the output. Link to comment Share on other sites More sharing options...
nzcarnerd Posted April 13, 2011 Share Posted April 13, 2011 Maybe it is something agricultural? Link to comment Share on other sites More sharing options...
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