mfg Posted September 3, 2017 Report Share Posted September 3, 2017 If equipped with automatic transmission, mid 70's Avanti ll's, (with 400 CI Chevrolet engine), used the .......?.......GM transmission. 1) TH350.......2)700R4.........3) Turboglide......or.......4) TH400 Link to comment Share on other sites More sharing options...
grobb284 Posted September 3, 2017 Report Share Posted September 3, 2017 Th400 Link to comment Share on other sites More sharing options...
mfg Posted September 3, 2017 Author Report Share Posted September 3, 2017 1 hour ago, grobb284 said: Th400 Yes, the super-tough TH400 is CORRECT! Link to comment Share on other sites More sharing options...
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