GEARSTAR TH400 - Compatability
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Intermediate
Joined: May 2024
Posts: 48
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From: San Jose, CA
GEARSTAR TH400 - Compatability
I am considering purchasing a Level 2 GearStart TH400. They seem to have a good reputation and bench test each unit before shipping.
Does anyone have experience with GearStar? Do they fit in correctly with all shift linkage brackets fitting appropriately? Also the kick down solenoid connection, cooler lines...
My TH400 has a slip on yoke and 4" tail section and 13" converter.
I found out today the thrust surface of my crankshaft is significantly ground down... So it is possible the converter I had was somehow expanding or improperly mounted and forcing the crank forward. I certainly was not using a trans break, but I did have a LOT of trans fluid blow out of the vent pipe at high speeds. Maybe something was ballooning... Perhaps a bench tested GearStar is a good option and the price seems reasonable to me. Rebuild service costs are getting out of hand these days. I was just quoted $850 for new U-joints in my half shafts. Brand new pair of Van Steel half shafts with flanges are $650.
Thank you!
Does anyone have experience with GearStar? Do they fit in correctly with all shift linkage brackets fitting appropriately? Also the kick down solenoid connection, cooler lines...
My TH400 has a slip on yoke and 4" tail section and 13" converter.
I found out today the thrust surface of my crankshaft is significantly ground down... So it is possible the converter I had was somehow expanding or improperly mounted and forcing the crank forward. I certainly was not using a trans break, but I did have a LOT of trans fluid blow out of the vent pipe at high speeds. Maybe something was ballooning... Perhaps a bench tested GearStar is a good option and the price seems reasonable to me. Rebuild service costs are getting out of hand these days. I was just quoted $850 for new U-joints in my half shafts. Brand new pair of Van Steel half shafts with flanges are $650.
Thank you!
Last edited by DanielNiclas; Feb 5, 2025 at 11:06 PM.
