As I have over 35 K on my truck, what kind of drivechain service am I looking at in the future? I am also looking foreward to tearing the engine down for hp increase but I am going to wait until a rebuild is needed. My last 4x4, a '96 Tacoma, original engine lasted until 222,000( gave it away last year ruuning great with over 450,000 and thinking the rebuild was not going to last much longer) and my '77 F150 was rebuilt when I threw a rod at less than 200k.

 

the Triton engines were bench tested to 1,000,000 in their original development.

I don't see why you couldn't get 200,000 to 400,000 with proper maintenance.