The 3-70-58X Strap Kit is designed for typical GM applications and is compatible with the 1350 and 1410 series. It features a cap diameter of 1.188 inches and a center-to-center (C to C) distance of 1.660 inches.
This kit includes bolts that are 1.500 inches long, with a thread diameter of .312-24. The recommended bolt torque for installation is 32 ft-lb. The strap and bolt numbers are both marked as N.S.S., indicating they are not specified. This product is manufactured by Spicer.