i have a sbc with advanced adapter. and was told it had a new chevy clutch. the tcase was making horrible noises and i had received a spare 4speed and tcase with the truck. i pulled the tranny tcase but when i went to install the new unit the trow out bearing sleave didn't wan't to fit on the input shaft. my question, is there two diameter shafts. the shafts are the same lenth and spline count. the back of the shaft is clearly thicker. trannys are h42s. after researching the only thing i have found is that some people get the input shaft turned down to fit chevy throwout. any help would be greatly appreciated.
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