I think the I-5 is perfectly fine for the lighter versions of the Colorado. However, a V8 option is a must if you're going to be moving a 4000lb+ truck or H3.

 

I was talking to a friend about the H3 , when he proceded to trash the I5. I though I heard quite a while back before they were out that it could be taken to 300 H.p. I could be wrong but is it really that far of a stretch? And wouldn't a 300H.P. I 5 be a little cool! I can remember telling my buddies right around 98 or so, about how I thought they could take the new "SB" mill to 500 H.P. N/A! Of course they all said I was nutz (some were into Mustangs singin' songs of the 4.6L ). Who's laughin' Now! Thanks GM for proving me right! C6 Z06 I am not opposed to the new Staight motors at all. I think they took a lesson from the old straight motors that would run forever, only now we got modern electronics, and reliablity is much better. A bump to 291 for the I6 is great. Having a V8 optional though in the colorado does really help out the enthusiast because then you have GM quality swap parts! Like the old Monza/Vega! Huh Huh! Like with the SSR early H.P. #'s really hurt its sales IMHO. They were just testing the waters, #'s usually go up, I would hope no one wants a repeat of The Ol' Gobmnt regulashuns days, so you can start to understand why they should stay conservative on H.P. early on and gradually increase! ROCK/GM/HARDPLACE! How bout if we get everyone to finally make the switch to Torque!!!, come on its much more fun! Say it Torque! Its where its at! Even if it only buys us some time, what the Hell! Anyway MPG isn't near as bad as most ppl think, what are you guys gettin' in your T/56 LT1's? I think I'm getting atleast 25 or so when we stay out of it! If I tell someone that they look at me like I have 3 heads! With this new crop of engines I5,I6, V8,(V16 or V12), DoD, and transmissions coming it should prove to get even better in all areas MPG, H.P., T.Q.! Give them a chance ppl! When the 4.2 I6 Trailblazer/Envoy was rated at the same H.P. as our 94 Z/28 stock I thought that was pretty good!

 

its not the hp of the H3's 5 cly thats the problem. Its the weight of the H3--a terrbile power to weight ratio. Even people who don't care much about power want a vehcile that has decent passing power.

I can just see this H3 struggling up hills on the Trans Canada highway into the Rocky mountains.

Todays engines have hp and fuel economy that were only dreamnt about in the 60's/70s. Not to mention that they are hundreds of times cleaner, in the emissions dept.

Now some automakes are getting pretty crazy with power, Mercedes in paticular. But a 291 hp Trailblazer is not extreme at all.