Unfortunately because of CA dmv I cannot do a Cummins swap.
But 30mpg?? I have heard so much less from others. How would you set that up?
I am in search of a whole knew drive train so I will be picking up some sort of OD transmission

Quote Originally Posted by Edahall View Post
Either a GM 6.2 or Cummins 3.9 4BT. Do you have overdrive? The 6.2 likes to cruise at 1800 rpms and Cummins is a bit lower like 1500-1700 rpms. The 4BT would likely yield better fuel economy. However, a 6.2 that is set up with fuel economy in mind can yield close to 30 mpg.