TCI 379600 700R4/4L60E Input Shaft

TCI Hardened Input Shafts are constructed from hardened, aircraft quality Vaccu Melt 300 billet steel or Vasco 300 high strength steel. They feature increased lubrication flow and strength with a resized diameter that provides optimum stress distribution along the entire length of shaft along the extended high gear splines to the oil ring. See the chart below to compare TCI Input Shaft materials compared to stock and other aftermarket brands.

This input shaft for 700R4/4L60E is made from Vaccu Melt 300 Steel to handle higher horsepower demands than stock replacement units.

1987-1992 700R4
1993-1997 4L60E