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Driveshaft

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...A NAPA 1310 to 1350 conversion U-joint (PN NPJP348) was needed to mate it to the 1350 output yoke on our SM420. The Ford 9-inch at the other end already had a 1310 yoke, and the driveshaft had a perfectly good 1310 U-joint, so we greased it and ran it. With the driveshaft in place, we lowered the wheels to the ground, set the pinion angle, and then welded the spring perches on the Ford 9-inch.

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