i was bored and decided to install my copy of desktop dyno 2000 on the comp. i figured good time to see how much torque my 84 454 put out. when i ran the #'s on a stock engine, it came out with 202hp @ 3,000 and 402tq @ 2,000 rpms. now i was wondering about that. since i know that when my dad bought his 89 4 door dually in 90 new, that the specs on it were supposed to be something like 265hp and 300tq this with tbi. so is this desktop dyno thing acurate? i changed the bore and stroke to that of the caddy 500 just for kicks and it came up with 205hp and 438tq peak at the same rpms as the 454.