3.7L 5 Cylinder vs.........
 

i love my H3, but i think the H3 should have been a 4.0L V6. anyone else agree?

Re: 3.7L 5 Cylinder vs.........
 

The 4.2L from the Trailblazer OR Envoy would have been a better choice, but if you compare the MPG ratings between the 5 cyl and the 8 cyl I would say the V8 is the better pick. Doesn't have to work as hard, and would probaly end up with the same gas milage or God fobbid Better MPG's . Just my .02 :D

Re: 3.7L 5 Cylinder vs.........
 

thought the same thing. when i was purchasing my h3 they had no more alphas or i would have bought one of those. i find that the regular h3 is a little underpowered. 4.2 would have been the way to go. i had an envoy xuv before i bought this and even found that that could have used a little more power.

Re: 3.7L 5 Cylinder vs.........
 

I disagree. With the 3.5 in a 06 its got everything & saves some mpg over the v6 and v8!

Re: 3.7L 5 Cylinder vs.........
 

Why not a 5.0 HO or an 8 litre with a 4:11 rear, 6 on the floor, quad exhaust, flames, dice and fur...

do you want a drag car, a drive in restaurant cruiser or a HUMMER ...

make your mind up !!!!!!!!!!!!!!!!!!!

Re: 3.7L 5 Cylinder vs.........
 

so you think it has enough power? a 4L V6 would be perfect for it in my opinion.

Re: 3.7L 5 Cylinder vs.........
 

:drama: :popcorn: :drama: :notallthere:

Re: 3.7L 5 Cylinder vs.........
 

LOL!

Re: 3.7L 5 Cylinder vs.........
 

A V6 was in the works for the H3 in 2010 but that has all been shelved because of what GM is doing with the brand...

I personally like the I5, it gets the job done for what the truck was meant to do. It's not a race car, and it never was meant to be.

This reminds me, I watched the Aussie Top Gear on youtube yesterday, what a joke. They raced an H2 Limo around their track... What are these people smoking?

Re: 3.7L 5 Cylinder vs.........
 

the 5 does get the job done, but sometimes i gotta floor the thing to get up a small hill.

Re: 3.7L 5 Cylinder vs.........
 

The I-5 does have to stress a lot and that goes for small tasks such as passing another vehicle on the freeway. It'll be interesting to see if these motors can handle 150K+ miles with all the stress and high revving it displays.

Re: 3.7L 5 Cylinder vs.........
 

I think the future will show the I-5 is and was a great engine !

Re: 3.7L 5 Cylinder vs.........
 

I will definitely be finding this out. i plan on keeping my new h3 for a very long time. i'm also gonna get an h2 as soon as i can.:)

Re: 3.7L 5 Cylinder vs.........
 

i think with gas situations there not gonna consider getting rid of this engine.

Re: 3.7L 5 Cylinder vs.........
 

Well i stuck on a K&N filter, Jet Tbody spacer, Jet performance chip and a Gibson side exit exhaust. I have noticed a decent power increase, really improved throttle response and my im figure'n out my milage this week. So ill let you know how that goes. Maybe you should give those a try.

Re: 3.7L 5 Cylinder vs.........
 

How about some photos of the side exhaust !!!

Re: 3.7L 5 Cylinder vs.........
 

Dam Im expecting 250,000 + miles

I find it doesnt work to hard climing hills,
Unless the 4,000 lb campers hooked up then it strugles to get up the long steep hills.
I find when towing go into the hill at 65 to 70MPH then by the top I end up about 50MPH and it will stay in 3rd gear.If I try to keep it at 55 or 60MPH it goes down to 2nd and revs about 5,000 + RPM and fights to climb the hill.

Re: 3.7L 5 Cylinder vs.........
 

I second that!

Re: 3.7L 5 Cylinder vs.........
 

You can always slap one of these puppies on for some power! Turbo Charger guaranteed 125 HP for the 3.5 and the 3.7L

Attachment 49819

Re: 3.7L 5 Cylinder vs.........
 

and who warrenties the engine and drive train after you install it...

OBAMA !!!:dancingbanana:

Re: 3.7L 5 Cylinder vs.........
 

Obama, LOL! I guess we have a lose, lose situation with the president this year. i don't think i like either one of em'. i think obama might be the lesser of evils though.

Re: 3.7L 5 Cylinder vs.........
 

The reason they don't make seaman into admirals is they need to get a little experience under there belt first...maybe in another 8 to 12 years Obama may start to get a little leadership experience and then he can run. Right now I wouldn't let him cut my lawn without a superviser !!!!!!!!

Re: 3.7L 5 Cylinder vs.........
 

LMAO!

Re: 3.7L 5 Cylinder vs.........
 

I have the Gibson Extreme Dual on mine, also have the Poweraid TB spacer and an AirDoc CAI with an Airaid Cone Filter and I had it dyno tuned. Made a big difference! I think the 3.7L has plenty for what it is, especially if you add a few things to it:

Here's a pic of the exhaust as it comes from Gibson:


I didn't like it due to clearence issues so I modified it:


Dyno sheet

Re: 3.7L 5 Cylinder vs.........
 

I like your plates, thanksAttachment 49906

Re: 3.7L 5 Cylinder vs.........
 

Thank YOU!

Re: 3.7L 5 Cylinder vs.........
 

I have an 07. The I5 is impressive at the stock rated power. I had chevy 4x4 trucks in the mid to late 70s that weren't over 175HP. The current mfg tollerences and materials will have these motors on the road much longer that the old V8s of yesteryear that require rebuilds and boaring after 100k.

BTW..I have an AirDoc Intake, PCMforless tune, and MagnaFlow Cat back and have plenty of power. Is it an Alpha?... no, but in a 125 yd. sand drag, three times I was within a fender length of a friend with a Silverado V8, and 3 truck lengths in front of two other friends w/ stock H3s.

Mod the I5 and you will enjoy the boost in drivability.

Re: 3.7L 5 Cylinder vs.........
 

I just wish GM gave us more gears to play with, regardless - I love my alpha! And now that gas is stabilizing a bit, I think my wife is a little jealous.....