The Triton 4.6 is the worker of the three, it has low end grunt, the kind that I need and it is extremely smooth. The 4.8 is a pushrod joke, old school indeed, it is far better than the old Chevy small block and I can't say if I were given one I wouldn't take it. I do wonder what the numbers are at the same RPM that the Triton is strongest, who needs all of the torque at 4.000+ RPM's??
Toyota has always had good engines, four bangers that is and I am sure that they put a lot of engineering effort in to the i-force since it is based on the Lexus 400 engine. However, Toyota only offers the one size V-8 and does not have much full-size truck experience except for the T-100 nightmare. Their engine is about the same vintage as the Triton engines and only slightly better a very few areas. A "Glam" engine for a "Glam" truck. The only reason the Tundra is faster than the others is because of the 4.10 axle they put in the test truck. Not because of the engine. It is the perfect full-size truck for those that don't need a full-size truck. The Triton 4.6 does everything I need it to do and does it well. It is a great engine especailly for it's displacement. I would welcome the extra HP though.
'99 XLT S/C 4.6 Auto 3.55 LS Oxford White,Orlando appearance package, trailer tow package, keyless entry, A.R.E. Hard tonneau, ventvisors and bug guard all painted to match, limo tint, 5 spoke aluminum wheels, Kenwood 6 Disc, black Back Country nerfs, Buccaneers front license plate! I Luv it!