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Old 08-18-2010, 06:58 PM
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3.6 or 5.7 Now That is The Question

I know I am going with the Laredo "X" and the adventure package, the question is which motor. I drove both the other day but still can't decide. I like the little extra power of the Hemi but not sure if I "need it." I will not be towing anything, nor will I be doing much if any offroading. We get a bunch of snow where I am at so I like the option of 4 low and the tow hooks. Will I be going overboard with the hemi?

What do you think will be the easier engine to maintain, and will hold up to punishment the best? I am a "hard driver" and wonder if the v6 will hold up long term? Does the v6 have a longer tune up time? For instance my Honda doesn't have to get the plugs changed till 100,000 miles. How does the hemi and Penstar stack up on routine maintence?
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Old 08-18-2010, 07:02 PM
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Re: 3.6 or 5.7 Now That is The Question

The Hemi is a proven engine, is "lazy", and understressed.
It is cheap to maintain.
Yes, it uses a little more fuel than the 6, but I feel the "real world" difference between the two will be negligable, given they're both dragging around a heavy vehicle. The V8, with its torque and capacity advantage, just makes lighter work of the job.

For ME, it's HEMI!
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Old 08-18-2010, 07:05 PM
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Re: 3.6 or 5.7 Now That is The Question

How often due the plugs need to be changed in the hemi vs. the penstar?
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Old 08-18-2010, 07:24 PM
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Re: 3.6 or 5.7 Now That is The Question

30000 5.7 96000 penstar
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Old 08-18-2010, 07:27 PM
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Re: 3.6 or 5.7 Now That is The Question

Hemi, duhhhh
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Old 08-18-2010, 07:33 PM
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Re: 3.6 or 5.7 Now That is The Question

Would anyone really make a decision based on how long they can run the oem sparkplugs?

Get the Hemi or spend the next 5 yrs wishing you had!
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Old 08-18-2010, 07:39 PM
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Re: 3.6 or 5.7 Now That is The Question

I'm averaging 15 mpg with the hemi commuting on 35 mph hilly roads for 30 minutes, then sitting in traffic for about 15 minutes each day. So gas mileage with it really does suck. But when I have the chance to open it up, it really is fun. If the fun factor matters to you, go with the hemi. If not, go with the pentastar.

WRT plugs - the hemi needs new ones after 32k. And it has 16 of them. And replacing them is a bitch as the back cylinders are not accessible. My dad had them done on his ram (rather than doing them himself) and it was $300.
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Old 08-18-2010, 07:59 PM
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Re: 3.6 or 5.7 Now That is The Question

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Originally Posted by jpsmith View Post
I'm averaging 15 mpg with the hemi commuting on 35 mph hilly roads for 30 minutes, then sitting in traffic for about 15 minutes each day. So gas mileage with it really does suck. But when I have the chance to open it up, it really is fun. If the fun factor matters to you, go with the hemi. If not, go with the pentastar.

WRT plugs - the hemi needs new ones after 32k. And it has 16 of them. And replacing them is a bitch as the back cylinders are not accessible. My dad had them done on his ram (rather than doing them himself) and it was $300.
So much I know about new engines.. the V8 has 16 spark plugs, 2 a cylinder?
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Old 08-18-2010, 08:00 PM
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Re: 3.6 or 5.7 Now That is The Question

A smart consumer would replace the standard Copper Core plugs in the Hemi with Double Platinum or Iridiums. The Champion DP's have a 5 year, Unlimited Mileage warranty. Unfortunately, most people won't spring for 16 of the DP's after spending a chunk of change of the vehicle.
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Old 08-18-2010, 08:09 PM
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Re: 3.6 or 5.7 Now That is The Question

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Originally Posted by nek121328 View Post
A smart consumer would replace the standard Copper Core plugs in the Hemi with Double Platinum or Iridiums. The Champion DP's have a 5 year, Unlimited Mileage warranty. Unfortunately, most people won't spring for 16 of the DP's after spending a chunk of change of the vehicle.
Does anyone know the part number for champion DP or Iridiums? I think I found the Iridium as Champion Part # 9403 but not 100% sure, got it from a 2008 5.7L hemi on championsparkplugs.com *third party site*

Same as the 2011 I imagine as its the same engine..
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Old 08-18-2010, 08:10 PM
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Re: 3.6 or 5.7 Now That is The Question

Get the V6. It would be cheaper all the way around and still has power for moving.
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Old 08-18-2010, 08:11 PM
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Re: 3.6 or 5.7 Now That is The Question

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Originally Posted by J13ntv View Post
So much I know about new engines.. the V8 has 16 spark plugs, 2 a cylinder?
Yes that is correct. That is the only downfall to the engine that I could see.
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