Stingray, that's exactly what I used, a '57 pumpkin into my '49 carrier and axles. I did burn off the pivoting perches from the housing and replaced them with perches from Buffalo. He supplies a spacer so that your wheels are located in the center of the wheel wells.
It only drops you from 4.11 to 3.90, but I have an overdrive tranny that is .70; the math, .70X3.90 = 2.73 final drive in overdrive, I cruise 65-70 mph at somewhere around 2000 rpm's.
Dusty, I don't know if it's the same for your '46 housing.
~ Cosmo
1949 Chevy Half Ton
Rocinante, like Don Quixote, he is awkward, past his prime, and engaged in a task beyond his capacities.
"...my good horse Rocinante, mine eternal and inseparable companion in all my journeys and courses." ...Don Quixote, Cervantes
"If you come to a fork in the road, take it."...Yogi Berra
"Rudeness is the weak man's imitation of strength." ...Eric Hoffer
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