If you are keeping the torque tube, Utah York provides an important note about the collar function. If you do stay with the torque tube and still want to eliminate the helper springs, you will need to locate another axle with the correct 2 piece collars. You'll also need new shorter U-bolts. The non-helper spring collars were side specific per the 1929-46 Chevy Parts Book.

Seat w/cap, Left GM# 600175 (373345 cast on cap)*

Seat w/cap, Right GM# 600176 (373346 cast on cap)*

* Both parts listed to fit Chevrolet 1936-46 ALL 1/2 ton Commercial trucks


~ Dan
1951 Chevy 3 window 3100
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"My Grandpa Carl's Truck and How it Became Mine"
1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver)
US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)