Quote:
Jack B : The Solstice trans is shorter/smoother shifting. The T56 has a long first gear and a 6th gear that needs tons of torque. Fourth gear is 1:1. Both 5th and 6th are overdrive. In short you need close to 400 ft-lbs to make it work.
That is only true if you keep the drive axle ratio the same. The T56 ratios are, as noted by
SmallDealer, 2.66 in 1st, and 0.50 in 6th, for an overall ratio range of 2.66/0.50 = 5.32. The Aisin AR5 is 3.75 in 1st and 0.73 in 5th for an overall ratio range of 3.75/0.73 = 5.14. The difference between the two is only 3.5%.
The Kappa drive axle ratio is 3.91:1, so if you changed it to 5.61:1 and installed the T56 you would see virtually no change in 1st or 5th/6th. No, I do not know if a 5.61:1 ring and pinion is available for the Getrag drive axle. Probably not.