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  #193  
Old 05-02-2012, 10:05 PM
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Re: Advice needed.. V6 or V8?

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Originally Posted by fundguy View Post
V6, I6 what's the difference. Its still a 3 liter 6 something and pretty interchangable. But I'm a speed power freak. The V8 is small for me but the SRT just seemed to much more expensive to splurge for. I'd rather save the cash, put a new big block in there, and beat an SRT8 for less. Maybe a 440 block stroked to 528 CI with 650 hp? No replacement for displacement.

The I6 is inherently balanced, as is a V12. A V6 is not. Without DI, I don't see how you can say a new engine these days is all that great.

As to the specific output, higher means it is "more stressed" in a sense. Look at an LS7 which is 505hp in 7 liters compared to a Audi or BMW V8 at 4.5L and 430hp or so... Who cares about the displacement?? It's the weight of the engine that is the issue. And in the case of sports cars, the center of gravity... With OHV engines doing quite well in that respect. But more important to SUV's I think, is the usable torque. I've been thinking of this thread whilst driving, and can't believe the V6 can pull like my V8 does below 3000rpm, which is how I drive most of the time.

But again, who cares? Like what you drive, and buy what you like.

PS the 420hp BMW v8, for example weighs 444lbs, the 505hp LS7 weighs a whopping 387lbs!! Who cares what the displacement is?
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  #194  
Old 05-02-2012, 10:12 PM
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Re: Advice needed.. V6 or V8?

Why don't you post all those TBS's and links to complaints. There is only (1) TBS for the transmission, and it involves shudders on acceleration or deceleration between 40-60 mph for Q2 transmissions only built before July 26, 2010 (early production 2011 models). Not exactly a major issue, and a reflash takes care of the issue.

There is a 2nd TSB, also for early production 2011 models for possible loose torque converter fasteners.

Does not exactly support your statement that one of the top-rated 5-speed "transmissions and software suck".

A rather all-incompassing statement and unsupported followup comments.

My reply was based on fact and actual history on a significant number of the population in question, rather than emotional anecdotal commentary.
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  #195  
Old 05-02-2012, 10:42 PM
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Re: Advice needed.. V6 or V8?

That's cause the LS7 is an aluminum block, super rare, and super expensive. You can change compression, cam, etc. and make most motors stronger but all other things equal, larger displacement makes more power. I like the LS7 motor. i'm considering one actually to replace the Bimmer. But I was replying to all the guys saying the pentestar is this great V6. Its ok but not close to the being the best 6 out there. I'd say it really just gets them out of the basement and gives them something competitive to what's been offered my most companies for years.
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  #196  
Old 05-03-2012, 07:00 AM
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Re: Advice needed.. V6 or V8?

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Originally Posted by fundguy View Post
That's cause the LS7 is an aluminum block, super rare, and super expensive. You can change compression, cam, etc. and make most motors stronger but all other things equal, larger displacement makes more power. I like the LS7 motor. i'm considering one actually to replace the Bimmer. But I was replying to all the guys saying the pentestar is this great V6. Its ok but not close to the being the best 6 out there. I'd say it really just gets them out of the basement and gives them something competitive to what's been offered my most companies for years.
You're comparing the Pentastar with rare or expensive ones.
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  #197  
Old 05-03-2012, 01:42 PM
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Re: Advice needed.. V6 or V8?

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You're comparing the Pentastar with rare or expensive ones.
I wouldn't call the Nissan Altima or 30k base model 3 series BMW rare or expensive.
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  #198  
Old 05-03-2012, 02:20 PM
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Re: Advice needed.. V6 or V8?

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Originally Posted by fundguy View Post
I wouldn't call the Nissan Altima or 30k base model 3 series BMW rare or expensive.
According to you: "the LS7 is an aluminum block, super rare, and super expensive". I'm not sure where the Nissan comes into that. And, since my wife's tiny little 328xi was more expensive than my much larger and better equipped GCO I'd call that relatively more expensive.
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  #199  
Old 05-03-2012, 07:40 PM
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Re: Advice needed.. V6 or V8?

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Originally Posted by Justal13 View Post
Why don't you post all those TBS's and links to complaints. There is only (1) TBS for the transmission, and it involves shudders on acceleration or deceleration between 40-60 mph for Q2 transmissions only built before July 26, 2010 (early production 2011 models). Not exactly a major issue, and a reflash takes care of the issue.

There is a 2nd TSB, also for early production 2011 models for possible loose torque converter fasteners.

Does not exactly support your statement that one of the top-rated 5-speed "transmissions and software suck".

A rather all-incompassing statement and unsupported followup comments.

My reply was based on fact and actual history on a significant number of the population in question, rather than emotional anecdotal commentary.
There's 18-035-11, 21-004-10 Rev A, 18-015-12. And you're right, those do mostly relate to earlier builds, but you still see people complaining about the same issues right here in these very forums. According to you, you and your mechanics were not aware of any such issues.

You then go on to cite experiences (I guess we won't call them anecdotes) with the vehicles in your company fleet and link to articles from two Chrysler-centric sites to prove your point. Those articles do say the GC's transmission is one of the smoothest 5-speeds around. But they also say it debuted in 1995 and has "excellent launch performance". Have you heard anyone talk about a WK2 and mention anything remotely related to "excellent launch performance"? You ask me to link to sources, but I would really love to see you support that one. And congratulations on having one of the smoothest 5-speeds around (still very debatable in this application), but that means nothing when comparing it to today's lighter, more compact, fuel efficient and performance providing designs.

And if the transmissions and software behind the two engines do not in-fact suck, how exactly would you explain their relatively lackluster performance? And don't give me the standard "it's a 5,500lb suv" answer. Both the Hemi and Pentastar are outrun by some equally-heavy, smaller-engined, lower hp/tq SUVs; some of whom return better mileage (in the case of the Hemi) while doing so. You do realize the Chevy Suburban does the sprint in 7.8 - 8.8 right? I don't think anyone would argue against the Hemi's or Pentastar's hp or tq numbers, so that either leaves the transmission or the software behind it.
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  #200  
Old 05-03-2012, 09:11 PM
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Re: Advice needed.. V6 or V8?

Quote:
Originally Posted by fundguy View Post
That's cause the LS7 is an aluminum block, super rare, and super expensive. You can change compression, cam, etc. and make most motors stronger but all other things equal, larger displacement makes more power. I like the LS7 motor. i'm considering one actually to replace the Bimmer. But I was replying to all the guys saying the pentestar is this great V6. Its ok but not close to the being the best 6 out there. I'd say it really just gets them out of the basement and gives them something competitive to what's been offered my most companies for years.
Quote:
Originally Posted by fundguy View Post
I wouldn't call the Nissan Altima or 30k base model 3 series BMW rare or expensive.

The comical thing is "those other V6s" also out perform the Hemi.


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  #201  
Old 05-03-2012, 09:19 PM
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Re: Advice needed.. V6 or V8?

In my opinion the 545RFE is more annoying then the W5A580...The 545RFE in my 06 WK had the worst shudder issue and was told "it's just the way it is" several times by several dealers and by two different Jeep engineers.


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  #202  
Old 05-03-2012, 11:25 PM
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Re: Advice needed.. V6 or V8?

Well....my V6 shoots rainbows out of the tailpipe and sounds like Beethoven at full throttle.

So suck on that
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  #203  
Old 05-04-2012, 08:52 AM
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Re: Advice needed.. V6 or V8?

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Originally Posted by ajs800 View Post
The comical thing is "those other V6s" also out perform the Hemi.
.
My brother in law has a 2011 3.5L Altima and it is faster than my Hemi. I would hope so, it is a lot lighter. It was a pretty close race up to 40mph though, then it got ugly.

Quote:
Originally Posted by ajs800 View Post
In my opinion the 545RFE is more annoying then the W5A580...The 545RFE in my 06 WK had the worst shudder issue and was told "it's just the way it is" several times by several dealers and by two different Jeep engineers.
.
The transmission in the Hemi is absolute garbage. It is by far the worst part of this vehicle. It is like it was programmed by a 3 year old. With that said, I would take the bad transmission and keep the power rather than have the v6 with a nice transmission.
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  #204  
Old 05-04-2012, 08:55 AM
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Re: Advice needed.. V6 or V8?

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Originally Posted by SW03ES View Post
Well....my V6 shoots rainbows out of the tailpipe and sounds like Beethoven at full throttle.

So suck on that
talking about "rainbows" and "suck on that" in the same post - Is there a closet you would like to come out of.
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