Quote:
Originally Posted by Garnetdawn
Ive been wondering about this for awhile. But how much Horsepower can the 4t45E Trans handle before it fails?
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Nobody has pushed one hard enough to see where they will break at. Speculation is 350hp is about tops but no one really knows. I'm turboed with 16 pounds of boost, ported head and intakes, and mines holding strong. The tune is a huge part of the reliability of it. Since the current tune we have slapped in mine it actually works better then it did new.