Unfortunately you wont be at 220. 3.7's are struggling with those mods

Im gonna guess 180ish possibly lower

 

You talking rear tires or rated? 175 rated from factory.. I'd assume the tune alone might push even an i4 the 5 up to 180. :shrug:

 

imo. u shouldve done a dyno run first to get a base line of what your starting with. then done the mods, so u can see you improvements...


i thought our 3.5s came with 220 hp at least thats what i seen on internet stuff

 

He has a 2.8....



Sorry op, the i4 isnt whatyou buy if you want speed. Theyre for effifiency.

I had a reg cab zq8 i4 5speed that was alot of fun, but that looks to be close to the opposite of your truck ftmp.

 

found this on edmunds.com
Launched for the 2004 model year as a replacement for the smaller, outdated S-10 pickup, the Chevrolet Colorado is still in its first generation. From the start it was available in standard cab, extended cab and crew cab configurations.

Initially, there were three main trim levels -- base level Work, midlevel LS and luxury-equipped LT. The LS was replaced for 2009 with the similar VL and the following year the midlevel trim was dropped, leaving just the Work and LT versions. Until 2007, the Colorado was powered by a 2.8-liter inline-4 with 175 hp or a 3.5-liter inline-5 that made 220 hp. For 2007, those engines grew to 2.9 liters with 185 hp and 3.7 liters with 242 hp, respectively. The V8 engine was not offered until '09.

 

The only thing I have done so far is the K&N Cold Air Intake.

I'm looking for flywheel HP, not rear wheel HP.

I already know that the 2.8L was not made to race the Indianapolis 500, I'm just looking for a little more power.

 

My 2.8 has gutted cats, a thrush muffler, cold air intake, and a tune. It put 141 hp to the wheels through the 5 speed. Not sure why you'd want rated hp, that number is useless unless you're trying to sell cars, but I'm guessing mines around 185-190 at the flywheel.

 

I think I should see similar numbers, right??

 

At the motor, probably close. But you'll get less to the rear wheels due to the auto. All of my mods were in the hopes of better fuel economy, and I gained about 2 mpg highway. It feels pretty peppy since it's a reg cab, but it's not fast by any means.