4.3 V6 gone in 2019?

i82much · April 3, 2018

14 minutes ago, Grumpy Bear said:

There is more to wind resistance than a low Cd.

Frontal area! And the news ones have a bunch of that. Allot more than the 40's/50's trucks.

Mass. Unless your rural road is kitchen table flat you get to haul that double bulk up an down hills. And as much as we would like to believe; the down side of a hill does not recoup the entire energy used climbing it. Not even close.

Stated dozens of times. I already get 26.4 mpg life time average with the billboard tank I drive. I have no problem visualizing 30+.

If smooth is your goal then don't step past the I-6/ Perfect balance through the 4th harmonic with so little disturbance in the next two even good instruments have a tough time noting it. Detroit gave up (sans Jeep) due to rpm limits with power was gained in such ways. Now that the limits are once again under 6,000 rpm everyone in playing in the sixer's house now. Yea kids, an inline 6 is smoother than a V-8.

Ya'll speak of these mini V-8's like they were 454's/460's. 5 liters in a six inline has been done. Even the 6.2 is a mouse motor.

i dunno, my 72 chevy gets around 11 if I am lucky, and the tune is pretty good, about 15:1 at cruise. I guess we'll just have to agree to disagree. I understand your point re: frontal area, but there is a lot of aero work that goes into these new trucks even though it might not be apparent at first glance. and 35 mpg is a HUGE number, you are talking 60% improvement in fuel economy! Auto engineers will tell you they are thrilled when they manage to pick up 3%.

Anyway, not going to stay in it and argue, go build your truck and get back to us. Whether you get your MPG target or not doesn't matter, I am sure it will still be a cool truck.

KARNUT · April 3, 2018

My wife’s Acura intagra type R, weighs 2600lb. It has a four cylinder and gets 25 MPG at 70. There’s a little more to it than weight and wind drag. My Camry gets 37 MPG at 70.

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mookdoc6 · April 3, 2018

46 minutes ago, Grumpy Bear said:

There is more to wind resistance than a low Cd.

Frontal area! And the news ones have a bunch of that. Allot more than the 40's/50's trucks.

Mass. Unless your rural road is kitchen table flat you get to haul that double bulk up an down hills. And as much as we would like to believe; the down side of a hill does not recoup the entire energy used climbing it. Not even close.

Stated dozens of times. I already get 26.4 mpg life time average with the billboard tank I drive. I have no problem visualizing 30+.

If smooth is your goal then don't step past the I-6/ Perfect balance through the 4th harmonic with so little disturbance in the next two even good instruments have a tough time noting it. Detroit gave up (sans Jeep) due to rpm limits with power was gained in such ways. Now that the limits are once again under 6,000 rpm everyone in playing in the sixer's house now. Yea kids, an inline 6 is smoother than a V-8.

Ya'll speak of these mini V-8's like they were 454's/460's. 5 liters in a six inline has been done. Even the 6.2 is a mouse motor.

See Grumpy, there you go again? I am comparing a V-6 to a V-8 on overall Balance/NVH. Nor am I a kid? What I do know is there are 30qty "dudes" probably posting on this topic your so "proud" of......and the responses seem to be? Well, the only 2qty people digging the 4.3 V-6 and all it's attributes....is well...2qty people? I guess the rest of us be dummies? Right?

It's a .05% percent problem for GM and I guess you two to figure out if it's DOLLAR to DONUTS Proposition.....being the kid dummie I bees? GM can't sell em and dat be a problems! Sorry, for my speling?

mookdoc6 · April 3, 2018

9 minutes ago, KARNUT said:

My wife’s Acura intagra type R, weighs 2600lb. It has a four cylinder and gets 25 MPG at 70. There’s a little more to it than weight and wind drag. My Camry gets 37 MPG at 70.

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When the voices protrude the perfectionist Grandeur and it's the only way, correct way my way.........I wonder what it's like to go to bed at night being called out on every disclaimer of 100% fact is well, nothing more than HOGWASH! great post! I had early 80's Honda 4cly....maybe 28-30max?

DONWT15 · April 3, 2018

3 hours ago, Donstar said:

Weight, aerodynamics, gear-ratios, transmissions, wheels and driving habits all impact performance. Heavy emphasis is placed on horsepower because it is a number we can easily compare. A relevant example of this is how my V6 truck is rated to pull 1000 lbs more than an equivalent truck with a 5.3 V8 and a standard 3.08 gear ratio. Some will pay more for 70 extra horsepower that does less. Arguably, the V8 sounds nicer when you're standing outside!

Perhaps we should compare apples to apples here. Gear ratios matter.

Donstar · April 3, 2018

1 hour ago, DONWT15 said:

Perhaps we should compare apples to apples here. Gear ratios matter.

Great illustration of the point I was making. Also notice the impact of gear-ratio on the 5.3 vs the 6.2.

Grumpy Bear · April 3, 2018

You argue this like you have a say in the matter.

Dec 1, 2016 - On Wednesday, the Environmental Protection Agency (EPA) proposed leaving in place fuel economy standards that would gradually increase the average miles per gallon requirements for cars to 54.5mpg by 2025

If you think trucks will be left alone.....it's a thought better not had. 1/2 tons are already included in those 'car' numbers.

"I dunno, my 72 chevy gets around 11 if I am lucky, and the tune is pretty good, about 15:1 at cruise".

What was the reason for this statement? Ya lost me.

I am comparing a V-6 to a V-8 on overall Balance. Yes and? If you haven't noticed in the last few decades that's been figured out. Mine is smooth as butter.

Time will sort this out. No need to argue if further.

Grumpy Bear · April 3, 2018

11 minutes ago, Donstar said:

Great illustration of the point I was making. Also notice the impact of gear-ratio on the 5.3 vs the 6.2.

And were back full circle. If it matters that much that you can pull the weight of Mt Evens up a 10% grade at 100 mph then have at it. I don't have that need and I'm not understanding why those who do wish ill on those that don't. Or as Elmer Fud would say, "KILL THE WABBIT"!!

Take a real good look around you. All the things men have built were built with trucks you swear won't get the job done. Got R did.

DONWT15 · April 3, 2018

1 hour ago, Grumpy Bear said:

Take a real good look around you. All the things men have built were built with trucks you swear won't get the job done. Got R did.

This is true. Lots of gear and an inline six.

'01LS1 · April 4, 2018

9 hours ago, Grumpy Bear said:

You argue this like you have a say in the matter.

Dec 1, 2016 - On Wednesday, the Environmental Protection Agency (EPA) proposed leaving in place fuel economy standards that would gradually increase the average miles per gallon requirements for cars to 54.5mpg by 2025

Time will sort this out. No need to argue if further.

Currently, the auto mfg's have lobbied their way to rolling that 54.5 mpg number back. https://www.cnbc.com/2018/04/02/trump-epa-will-revise-obama-fuel-efficiency-rules-for-autos.html

Donstar · April 4, 2018

9 hours ago, '01LS1 said:

Currently, the auto mfg's have lobbied their way to rolling that 54.5 mpg number back. https://www.cnbc.com/2018/04/02/trump-epa-will-revise-obama-fuel-efficiency-rules-for-autos.html

Probably not the right venue to get into a political debate but whatever can be done to expediently improve mpg the better off for everyone! On a personal level, fuel has reached $1.60 per litre in my area. Part of the reason for this thread was my surprise that GM has chosen 8 cylinder engines to a achieve mpg targets. I believe it is more of a marketing decision. It will be interesting to see how this plays out. Ford continues to refine their 6 cyl engines while GM works on a variable operating V8.

'01LS1 · April 4, 2018

52 minutes ago, Donstar said:

Probably not the right venue to get into a political debate but whatever can be done to expediently improve mpg the better off for everyone!

Oh definitely not intending for it to be political. Just think the auto mfg's were lobbying that number to be rolled back as the target number may not be obtainable by 2025. There will still be a improved number replacing it as a goal. But I do remember that the highest number(54.5) was chosen initially. Further, the highest selling vehicles most mfg's have are cuv/mid size suv's & GM has plenty of crazy small turbo 4cyl engines.

Donstar · April 4, 2018

2 hours ago, '01LS1 said:

Oh definitely not intending for it to be political. Just think the auto mfg's were lobbying that number to be rolled back as the target number may not be obtainable by 2025. There will still be a improved number replacing it as a goal. But I do remember that the highest number(54.5) was chosen initially. Further, the highest selling vehicles most mfg's have are cuv/mid size suv's & GM has plenty of crazy small turbo 4cyl engines.

:-) I didn't think you were getting political but I'm biting my tongue...

Grumpy Bear · April 5, 2018

On ‎1‎/‎18‎/‎2018 at 9:40 AM, Donstar said:

I heard that GM will still offer three engine choices with the new inline 6 cyl. diesel and the current two V8's. This means the current 4.3 will not be in the lineup.(?) If this is true, I understand from a marketing perspective. Personally, I believe this is unfortunate. Unless they make the diesel the base motor, which they won't, the 5.3 will now replace the V6 as the base motor. This will help drive up the price of the lower trim level trucks and increase sales of the optional engines.

After all this nonsense it dawned on me there is no question for which one may opine!! Fool me once Donstar

Donstar · April 5, 2018

1 hour ago, Grumpy Bear said:

After all this nonsense it dawned on me there is no question for which one may opine!! Fool me once Donstar

Yes, but not unusual for threads to take on a life of their own! I looked forward to and appreciate your informed responses - on or off topic ;-) Mentioning 6 cylinder engines and/or manual transmissions usually generates all kinds of comments on this forum!