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Old 01-14-2020, 02:19 PM   #3 (permalink)
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Join Date: Apr 2006
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Location: Melbourne, Australia
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This is probably the shop with the best reputation for building the TH180 (known as the trimatic locally)

GM Transmissions — Race Glides

I believe the full manual valve bodies remove compression braking which is probably undesirable in an off road application, but this is old information ( I had a th180 for a project many years ago and did some research)
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