Im doing an LSJ/modded 4T45-E swap into my Malibu Maxx. This is a heavier car and I plan on shooting for around 300 HP at the crank for the motor when all is said and done. Since I tend to destroy transmissions from abuse, Im thinking of swapping out to the 7/8" 35/35 sprockets and drive chain (for a FDR of 3.29 in place of the 33/38 set) in my 4T40-E core when I rebuild it. This automatically increases the torque capacity of the trans by 15% since there is no reduction ahead of the input drum. BUT... everything past that now spins 15% faster.

Anyone tried this on a setup revving past 6k? Can the rotating assembly handle the extra speed? GM lists the max input speed as 5800 RPM for the V6 apps, but I plan on around 6500+.