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C6 Corvette ZR1 & Z06General info about GM’s Corvette Supercar, LS9 Corvette Technical Info, Performance Upgrades, Suspension Setup for Street or Track
In my 03 cobra days, the only thing needed to bring its t-56 to 'viper spec' was to change the input shaft. There were a lot of people running 600+ ftlbs (at the wheels) through the t-56 on their 03 cobra with no issues--the only upgrade to the transmission was the input shaft.