Engine Builders talk.
the torque convertor is a bigger issue than the trans. The ratio on the 4.6 and 5.4 conveter are different and even on a built trans if it had the 4.6 convertor powered by a SC 5.4 it would go quick
Interesting formulas. Can't let [MENTION=99584]ibd2328[/MENTION] & [MENTION=76842]Carcrazygts2[/MENTION] have all the fun. 
http://www.onallcylinders.com/2013/0...u-should-know/

http://www.onallcylinders.com/2013/0...u-should-know/






