TH350 vs TH400 Torque Converter Cover Comparison
by George Nenadovich
The top torque converter cover is from a TH350 and white
arrow shows the wide metal section while the lower cover has a thin edge
in the same area.
White arrow in this picture shows thinner metal width for
TH400 cover...also note the cover has a large semi-circular arc cut-out
to clear the crank flange.
White shows the thin metal width for a TH400 cover compared
to the TH350 on the left and red arrow indicates steel gusset to strengthen
You can make a TH350 fit a TH400 but will require you to
remove some metal and also cut an arc out to clear the crank flange.