Re: 1956 Twin Traction Differential

Posted by Craig Hendrickson On 2012/4/10 20:14:13

So you're saying that the typical test for a "posi" rear end in a GM car where the clutch discs are spring loaded causing both wheels to turn in the same direction does NOT work on a Twin-traction?

The obvious reason I ask is because I just ran this test yesterday on my chopped 56 400 and the wheels turned in opposite directions with the yoke held steady. I guess I should pop the rear cover and look unless someone else has a codification identification.

Craig