NAPCO Thread

[Bad4wd]

1955, 1st series 3/4 ton and up and 2nd series gm trucks and earlier years should all be driver side. 1956 to "59 Napco trucks should all be pass. side. 1955 was the odd year because of the two differant trucks in the same year. The second series "55 1/2 ton went to a cv joint rear driveshaft instead of the old torque tube style, So you could easily put blocks in the back to raise the rear to match the frt. heght. I had a 2nd series "55 chevy 1/2 ton with a driv. side 8-lug, 3.90 gear and 2 lever rockwell transfer case. Napco also made a 1" thick spacer for the rear axle for the "55 1/2 ton to go from 6-lugs to 8 but really used only 6-lug nuts on a 8 bolt pattern but you would never know because of the hubcap. I think after "55, Napco had the time to develop a new 6-lug & 8-lug frt axles for the new trucks back then. I think this is right.......Dave.