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    2016 Burb - New Built 6L80 and Circle D Converter going In Soon

    This Wednesday. Installing my rebuilt 6L80 and Circle D converter 1800-2000 stall with Penzoil Platinum full synthetic LV ATF. The builder said my 4-5-6 clutch was smoked and there was slight scoring on the pump. He rebuilt the trans, gave me a new pump and installed some Sonnax upgrades that...
  2. U

    2016 Burb - New Built 6L80 and Circle D Converter going In Soon

    This Wednesday. Installing my rebuilt 6L80 and Circle D converter with Penzoil Platinum full synthetic LV ATF. The builder said my 4-5-6 clutch was smoked and there was slight scoring on the pump. He rebuilt the trans, gave me a new pump and installed some Sonnexx upgrades that I provided...
  3. U

    Circle D TC 1800-2000 or 2200-2400 Stall ?

    2016 Chevy Suburban -Diablew Tune Only -Superior Transmission cooler bypass -112k miles -Tow a boat in the summer I need to replace my TC and most likely Transmission and I wanted to ask and see what everyone thought about a higher Stall speed? Circled D on the phone recommended the "GM 300MM...

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