hey guys i have a 4l60e GM tranny and i just installed a B&M cooler and a TCI pro overhaull kit and i wanted to know how many hp can my tranny handle,.
thanx guys

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Thats hard to say really , Im not familiar with the TCI kit and there is more to making them work than parts. But a moderate rebuild with a good kit and a shift kit along with at least a new sunshell should be able to handle 400 hp your may be able to do more but As I said not familiar with that kit