well the original post seemed to have some stuff wrong. it was different from what i found. just the years tho. and i added the new engines too with all the stats to the list..

The '97-'05 4.2 V6 has 202 HP and 252 lb/ft TQ
The '06-'08 4.2 V6 has 202 HP and 260 lb/ft TQ
The '97-'00 4.6 V8 has 220 HP and 280 lb/ft TQ
The '01-'06 2V 4.6 V8 has 231 HP and 293 lb/ft TQ
The '07-'09 2V 4.6 V8 has 248 HP and 294 lb/ft TQ
The '09-'10 3V 4.6 V8 has 292 HP and 320 lb/ft TQ
The '97-'98 5.4 V8 has 235 HP and 335 lb/ft TQ
The '99-'03 2V 5.4 V8 has 260 HP and 350 lb/ft TQ
The '04-'08 3V 5.4 V8 has 300 HP and 365 lb/ft TQ
The '09-'10 3V 5.4 V8 has 310 HP and 365 lb/ft TQ

4.2 Liters = 256 CI = .700 liters/cylinder.
4.6 Liters = 281 CI = .575 liters/cylinder.
5.4 Liters = 330 CI = .675 liters/cylinder.

4.2 Liters = 256 CI = 42 2/3 cubic inches/cylinder.
4.6 Liters = 281 CI = 35 1/8 cubic inches/cylinder.
5.4 Liters = 330 CI = 41 1/4 cubic inches/cylinder.

The '97-'05 4.2 puts out 0.789 HP per cubic inch and 0.984 lb/ft per ci.
The '06-'08 4.2 puts out 0.789 HP per cubic inch and 1.016 lb/ft per ci.
The '97-'00 4.6 puts out 0.783 HP per cubic inch and 0.996 lb/ft per ci.
The '01-'06 4.6 puts out 0.822 HP per cubic inch and 1.043 lb/ft per ci.
The '07-'09 2V 4.6 puts out 0.883 HP per cubic inch and 1.046 lb/ft per ci.
The '09-'10 3V 4.6 puts out 1.039 HP per cubic inch and 1.139 lb/ft per ci
The '97-'98 5.4 puts out 0.712- HP per cubic inch and 1.000 lb/ft per ci.
The '99-'03 5.4 puts out 0.787- HP per cubic inch and 1.061 lb/ft per ci.
The '04-'08 3V 5.4 puts out 0.909 HP per cubic inch and 1.106 lb/ft per ci.
The '09-'10 3V 5.4 puts out 0.939 HP per cubic inch and 1.106 lb/ft per ci.

The '97-'05 4.2 makes 33 2/3 HP per cylinder and 42 lb/ft per cylinder.
The '06-'08 4.2 makes 33 2/3 HP per cylinder and 43 1/3 HP per cylinder.
The '97-'00 4.6 makes 27 1/2 HP per cylinder and 35 lb/ft per cylinder.
The '01-'06 4.6 makes 28 7/8 HP per cylinder and 36 5/8 lb/ft per cylinder.
The '07-'09 4.6 makes 31 HP per cylinder and 36 3/4 lb'ft per cylinder.
The '09-'10 3V 4.6 makes 36 1/2 HP per cylinder and 40 lb/ft per cylinder
The '97-'98 5.4 makes 29 3/8 HP per cylinder and 41 1/4 lb/ft per cylinder.
The '99-'03 5.4 makes 32 1/2 HP per cylinder and 43 3/4 lb/ft per cylinder.
The '04-'08 3V 5.4 makes 37 1/2 HP per cylinder and 45 5/8 lb/ft per cylinder.
The '09-'10 3V 5.4 makes 38 3/4 HP per cylinder and 43 3/4 lb/ft per cylinder

 

could you BOLD what you've changed/added?

im pretty sure some of those years had 210 HP

 

The original list was a quick list made with the info provided on Wikipedia, on each engine.

Didn't really feel like going super deep, and haven't had time to "update".

 

i have seen that too for the 4.2L. but it depends on the source and if you look into it further you will see that absolutely nothing mechanical changed between those years so going from 202 to 210, then back to 202 doesnt make sense. i could see if they changed something like compression ratio or something but it seems to be identical for every year up until 06.
and basically i added all the 3V engine specs, the original list ended at 2004 models i think.
i can put down what i changed...
original had...
97-04 4.2L-was changed to 97-05.
97-98 4.6L was changed to 97-00.
99-04 4.6L was changed to 01-06.
99-04 5.4L was changed to 99-03.
things added...
all 3V engines were added in all categories.
06-08 4.2L was added

 

Amen to that!

 

yeah my buddy has a 4.8L silverado reg cab shortbed. ive been trying to get him to run duals on his and also get a CAI but he hasnt given in yet.