(Although never owned a 5.7) while I would probably vote for the 3UR over the 2UZ, the 4.7 was used in smaller sized products as well. 4Runner and GX as well as 1st gen Tundra. 2UZ was also the million mile Tundra, when they tore it down they said it performed better than brand new 4.7 motors

 

I guess I look at the longevity and how bulletproof the 4.7 was. It impressed me.

 

I had the 4.7 in my 4Runner. Great engine - smooth, trouble free, and good torque.

 

I never saw that do you have a link? I know about the million mile Tundra but not the teardown.

I'm sure the 5.7 UR in the trucks is fantastic but I didn't care for it in the 460 versus the UZ in my LS430.

 

I will look. It is a Motor Trend article on it.

 

has to be the UZ and JZ series engines

the MZ and GR are also very good, and the 2ZZ is quite the little screamer

 

no doubt its a good bulletproof engine but its very understressed and weak on power

 

Understressed is a good thing, no?

2-UZ was working hard in the LC/LX because they were slow; I don't think it was understressed.

That's why I think the 3-UZ is a better choice. It is so undertaxed and understressed it's ridiculous. You could drive an LS430 and literally never have to crest 2300 RPM except in emergencies when you need maximum power.