Originally Posted by KarTek

By the time 06, 07 rolled around, the 6.0 was pretty well sorted out. I've seen them run back to back with the 7.3 and the 6.0 is a much more refined engine. 4 valve heads and it sounds like a beast with a good exhaust next to the oddly fluttering 7.3.

Plus, a plug in box will provide upwards of 400 HP.

Don't get me wrong, I enjoy my 7.3 but it's old tech compared to the 6.0. Also keep in mind that the 6.0 wasn't just made for the F-series. It's well utilized, working hard every day as the VT365 in the 4000 series International trucks.

Oh, and one last thing: The 6.0 has the excellent torque shift automatic while the 7.3 has the troublesome A4OD or whatever it is. Mine is a manual 6 speed.

Originally Posted by Simpler=Better

The exhaust warmup flapper always sounded weird. Buddy has a 7.3 in his work truck with a straight pipe the dumps right behind the cab. Hard launches sound like a cross between a helicopter and a tractor.

From what I've heard, don't buy a 6.0 unless it's already at 300k and has proven itself.