4spd swap checklist for a 68 Dart GT 318/904
I measured the depth of the pilot bushing hole in the 1998 5.9 Magnum and it is 2" 35/64 deep. This was measured with a straight edge across the OUTSIDE edge of the flywheel register as in the pic below. My 273, which has a 72 318 crank that was factory drilled measures exactly the same! I did not measure the diameter of either hole. I am guessing the roller pilot bearing is made for factory diameter of a Magnum motor. Hope this helps!
I measured the depth of the pilot bushing hole in the 1998 5.9 Magnum and it is 2" 35/64 deep. This was measured with a straight edge across the OUTSIDE edge of the flywheel register as in the pic below. My 273, which has a 72 318 crank that was factory drilled measures exactly the same! I did not measure the diameter of either hole. I am guessing the roller pilot bearing is made for factory diameter of a Magnum motor. Hope this helps!