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I have heard the D5 convertor is a stock higher stall lockup convertor for the 200 4R. Anyone know what a D6 convertor came in and what its specs would have been new??

I always wondered how trans fluid temp. and type affect stall speed? What I mean by fluid type is synthetic vs regular Dextron III or even Type F. I run Mobil 1 synthetic and my trans temp never seems to go above about 195F. Would my converter stall at a different speed with hotter or colder...

Hi All, Newbie here! I purchased and installed a TCI Streetfighter 200 4R #381500. This trans is supposed to have BRF calibrations. I am not sure what that means. I am very happy with this trans. except with the late 3 - 4 shift. All other shifts are great and firm. I have adjusted the TV...