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My first guess is that the tranny, TKO-500, is sitting lower then a stock tranny to fit in the tunnel. I can jack the tranny up about 1/2" which really helps the shaker, but then it is hitting the floor hump.






ding ding ding .... WINNER , this is the problem with the TKO KIT.

Instead of mickey mousing it you should have trimmed and expanded whatever needs to be trimmed and/or expanded and set the engine at the proper angle.

Now you need to check your driveshaft and pinion angle and how is your fan in relation to the radiator ???