yes...kind of. im not too sure how accurate the oil pan is, if you cant check it at the tail housing on the trans, check it on a machined surface.
if the trans points "down" x degrees, and the rear points "up" x degrees, then the working angle is zero.
1.4* down doesnt sound correct, the drain angle is usually about 3-5* from level, this just happens to be the same as the pinion from verticle.
i cant remember what is the "normal" working angle on leaf spring cars, but i think its about -2-3*
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