HP and Torque Comparisons between T4Rs

[t65k3]

Anyone know where I could find a summary of HP and Torque comaprisons between different years of T4Rs?

I remember that 03 V8 is a iForce. Toyota refined it one year later to increase the HP. Earlier today I looked at Toyota's website, and noticed the lastest model has a VVTi, no iForce like Sequoia. It looks to me that the HP increased from 03 to 04, maybe later. But this VVTi seems lowered the HP by a few. Maybe I remember it wrong.

 

[Uneek]

IMO, iForce was just a name. Same engine for all 4.7 V8 applications, probably different ECU tuning, intake and exhaust manifolds though.

2003-04, non-VVT-i:
235hp @ 4800rpm / 320lb.-ft @ 3400rpm

2005, VVT-i:
270hp @ 5400rpm / 330lb.-ft @ 3400rpm

2006-07, VVT-i:
260hp @ 5400rpm / 306lb.-ft @ 3400rpm

Keep in mind, for an apple to apples comparison, only the 2003-04 and 2005 numbers should be looked at. In 2006, Toyota adopted the new SAE ratings, thus there's a drop in HP. The way HP and torque is tested is different, I believe previously it was at the flywheel without accessories (AC, power steering, etc.) vs. at the flywheel with accessories. It's the same engine, no mechanical changes were made, and if tested side by side (2005 and 2006 trucks) on a dyno, both will yield similar results without as much significant difference.

Edit: Just checked 2004, 05 and 06 literature, the V8s were all still called i-FORCE.

 

[Thai]

As stated above, the numbers drop in '06 due to: http://www.toyota-4runner.org/showthread.php?s=&threadid=13809&highlight=SAE+ratings