I'm thinking about buying a 86 v6 camaro with a 5 speed manual trans. for my sbc 400 project . But my question is : can the stock v6 trans handle the torque of my slightly modified 400 ? Is it the same trans used on manual v8 camaros ?

 

No its not the same. The clutch disc is different, the trans is weaker, and the gear ratios suck. I suggest you do a search.