The issue with close driveshaft transmissions, is that the transmission oil lubricates the u-joint. Even if you can get a more modern grease lubed u-joint yoke on the transmission, you'd still have to find a way to seal the rear of the transmission where the yoke comes out. Given enough money and a capable machine shop, it would be possible to modify the transmission, but a switch to an open driveshaft style gearbox would be much easier. The open driveshaft is the easy part, modifying the closed driveshaft transmission is harder.


Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.