they are not maintenance adjustable on the th400
The th400 is a much stronger transmission meant for heavy duty use while the th350 is meant for normal use.
no
1 and a half to 2 qts
as long as it is a chevy bolt pattern th400
12 to 14
Powerglide, Th350, Th400, or a muncie 4 speed.
9 qrts after overhaul and with new torque converter or 5 qrts when you do trans service only
The TH400 transmission typically requires about 12 quarts of fluid when completely filled. However, the exact amount can vary depending on the specific vehicle and whether the torque converter is included in the measurement. It's important to check the transmission dipstick for accurate fluid levels, especially after a fluid change or service. Always use the recommended type of fluid, usually Dexron III or compatible automatic transmission fluid.
Should be no pressure, the ATF is just pumped through the cooler back to the transmission.
YES. You may have to change the yoke on the driveshaft. You didn't say what size transmission that is in it now.
The Turbo 400 (TH400) transmission is generally about 2 inches longer than the Turbo 350 (TH350) transmission. This difference in length can affect fitment in some vehicles, especially in tight spaces. Additionally, the TH400 is a heavier-duty transmission, which is another factor to consider when comparing the two.