Thread: c6 fitting problems

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Steve: I'm a little confused by how you described putting it together.......you weren't bolting the convertor to the flexplate THEN mounting the transmission to the convertor, were you? What you need to do is first put the input shaft into the transmission till it seats. Then put the convertor onto the input shaft and slightly elevate the front of the transmission so gravity is helping you. Turn the convertor round and round and it will start seating itself into the transmission. It will seat deeper until it finally seats all the way down in. The input shaft consists of a shaft within a shaft, so you have to get all those splines aligned for it to drop in all the way.

Sometimes you THINK it is seated all the way down, but it still is sitting one step up. That final seating will be noticeable as it drops down to the correct depth. As a check, you can measure from the engine block surface where the tranny goes to the level on the flexplate where the convertor bolts on. Then compare that dimension to what you get from the front edge of the transmission back to where the convertor is resting.

Finally, make sure your flexplate is not mounted backwards. You wouldn't be the first to do that. Some are marked out or engine side, but not all are.

My bet is that your convertor isn't fully seated down in the transmission though.

Don