![]() ![]() I dunno how this might compare to a Glide setup, but converters are converters and I would think they would all behave the same, regardless of which transmission they sit in front of. I belive you set line pressure in a TH400 by adding/removing shims under the bypass valve spring. I do trust my trans guy tho and will limit internal line pressures to no more than 200 psi going forward. Without setting something up on a trans dyno, I have no clue how to measure the about of forward thrust resulting from a given trans line pressure. Anything beyond that wears the pump out more quickly and contributes to heat issues in the trans. My local trans guy (Jim at ATO) told me he typically sets line pressure in a TH400 at around 200 psi. 075 end play and the rods where starting to blue the block main journal bosses. Any more than that and you start pushing through the oil cushion eventually wiping thrust bearings and smoking the crank like I did here. I researched this afterwards and read that standard BBC main thrust bearings are designed to handle upwards of 225 lbs of forward thrust. Shown below is the result of high trans pressure in a TCI built TH400 - originally bench tested between 240 - 250 psi line pressure. Everyone has their own ideas about what is the correct pressure and how to limit it. HPDRIFTER wrote:Too much transmission pressure will push the torque converter forward, away from the transmission and wipe out the thrust bearing on the main bearing. ![]()
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