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The info I saw said the Colorado had 300hp. It has to be a screamer. Add a CAI, exhaust, tune and hang on.
 

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The motors and engine ratings SHOULD be identical between the 2. The wheel horsepower and torque ratings may be different though. The only difference I could think of would be if they used a different intake, which I don't think is the case. All the other internal parts are identical.
 

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I have a 2010 V8 w/5.3L LH9 300HP Colorado. From what I understand, it is " de-tuned " from the 325HP in the Siverado.
 

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As retired2001 said, I'm sure the computer is detuned. Thats a easy fix.
 

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the 5.3 same as in the Alpha H3 its a slightly detuned, which is odd considering the rearend is a better gearing then even the silverado (you can get 4.11 in the colorado), and considering the trailblazer SS has a 400hp 6.0 in it and that is the same platform as the colorado I havent been able to figure out what warrants the detuned 5.3, anyone??
 
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