Lots say the T400 is faster than a 727. how much? I’m sure each car is different in that regard. Why is it faster? I’ve never done a T400 to know from experience, but I know the functionality of the T400 is different than the 727. That is what I believe the reason is for why people say it’s faster than the 727. Biggest reason guys go to T400 is because of parts availability, gear ratio options, and biggest one in my opinion is the SFI case and bell housing.