The TH400: Turbo 400 Billet Aluminum Forward Drum and 300 Maraging
Steel Input Shaft (with Modified Lube Circuit).
We has introduced a NEW INPUT SHAFT for the Turbo 400 that has the torque converter lube
holes removed from the shaft to deliver superior strength. Input shaft is precision machined
from 300 Maraging Steel.
Increased spline count to 35 between the drum and input shaft:
The drum is made from 7075 T6 billet aluminum:
The input shaft is made from 300 Maraging steel:
The input shaft is permanently located by a shoulder stop and snap ring>