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Old 04-27-2011, 05:41 AM   #1
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Lightbulb So let's set this straight on what gives it that v8 sound

I have been reading over and over again posts about how if the V8 were to disappear a V6 would not and could not ever sound like a V8. First point. Number of cylinders does not give it that "V8" sound. It is the individual size of the cylinder. Example: Take off two cylinders off of the L99 or Ls3...would it atomaticaly sound like a "wimpy V6"? NO! It would not. I'm sure some of you can relate to this doing a mod and having a couple of cylinders not firing. So even with two cylinders gone off of the Ls3 or L99 the timings would just need to be adjusted...even without an adjustment the sound would be there. Second point. Why is it a Harley sounds so mean? Two giant cylinders! Sure sounds a whole lot better than a 4 cylinder or V6 in terms of deep, mean, raw power sound. Point 3. It's funny how a V10 in most cases will not sound has aggressive as a V8 and sounds more refined. That's because a lot of times V10 engines are being shoved in the same size space as where a V8 would go. Solution: smaller cylinders= less aggressive sound. Now sure torque and power would be lost operating with two cylinders missing but this is no issue considering GM is realeasing a 320+hp V6 that only has 3.6 liters...compare that to the 100 more hp being put out by a monster of a 6.2L V8...ratios seem a little off per liter huh? So I'm sure just having 6 cylinders would be no excuse for loss of power

Closing point. So if the V8 were to ever die and people were to be upset about the loss of that great sounding engine, it's okay! All they have to do is just finally make a V6 or maybe even a 4 cylinder that has bigger cylinders just like the Ls3 or L99 I mentioned earlier that had two cylinders cut off from. I think it shouldn't have to come to the V8s downfall for such an engine to be created...could you imagine the confusion and the looks on peoples faces if someone decided to break from the norm and crush that whole "V8s the only way to go crowd" because let's be honest...why do most people want a v8 so badly? SOUND...and 99% of those people believe it comes from the number of cylinders.
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Old 04-27-2011, 05:46 AM   #2
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Old 04-27-2011, 05:53 AM   #3
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Originally Posted by fielderLS3 View Post
That's not quite right. The sound has more to do with firing order and degrees of rotation between firings, which is generally dependent on number of cylinders. For that reason, a V6 could never sound like a V-8. The closest you could come would be the odd-fire 3.8L V-6 (before the split-pin cranks).

If it were the size of the cylinders that caused the sound, the Viper V10 would sound exactly like the 360 V8 (it doesn't), and the 4.3L Vortec V6 would sound exactly like the 350 (it doesn't).
Copied from the other thread. The sound is all about firing order.

Most of the V-10s any of us have experienced (mainly Dodge and Ford) are variations of V8s, so they have exactly the same size cylinders (and pistons, and head design, and manifold design, etc..) They sound different because the V8 fires every 90 degrees and the V10 fires every 72 degrees.
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Old 04-27-2011, 05:57 AM   #4
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It's all about harmonics ...
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Old 04-27-2011, 06:08 AM   #5
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Quote:
Originally Posted by fielderLS3 View Post
Copied from the other thread. The sound is all about firing order.

Most of the V-10s any of us have experienced (mainly Dodge and Ford) are variations of V8s, so they have exactly the same size cylinders (and pistons, and head design, and manifold design, etc..) They sound different because the V8 fires every 90 degrees and the V10 fires every 72 degrees.
Yes I wasn't going to get into angle and just touched on timings. What I was focused on was depth of tone.
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Old 04-27-2011, 06:38 AM   #6
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Old 04-27-2011, 06:58 AM   #7
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Quote:
Originally Posted by fielderLS3 View Post
That's not quite right. The sound has more to do with firing order and degrees of rotation between firings, which is generally dependent on number of cylinders. For that reason, a V6 could never sound like a V-8. The closest you could come would be the odd-fire 3.8L V-6 (before the split-pin cranks).

If it were the size of the cylinders that caused the sound, the Viper V10 would sound exactly like the 360 V8 (it doesn't), and the 4.3L Vortec V6 would sound exactly like the 350 (it doesn't).
.
Agreed, the 4.3 V6 was quite literally a 350 with two cylinders cut off. While it does sound a little deeper than most other V6 engines, it definitely does not sound like a V8. Although, It also is a 90 degree firing rotation engine.
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Old 04-27-2011, 07:01 AM   #8
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Well i Have a 6 cyl and i when i put the Cold Air Intake on at higher RPM i have more of a growl than before..next is to increase airflow to the exaust larger pipes have a different tone..

if i understand right the V6 has smaller pipes becasue its not pushing as much exaust so just by making the pipes bigger you get the same (almost) sound .. same tone different fluxuation .

so far i've talked with my Mechanic:

CAI = +18 hp
catback =+ 10-15 hp
Diablo Chip = +20-40 hp (depending on V8 or V6)

so if this is true my 312 hp V6 can sound like a V8 and have nearly the power of a stock V8 at 385 hp potentially.

my 3/4 ton 2500 suburban has a six liter V8 and nearly the same hp as my V6 could have and i pull a 31' travel trailer with my suburban. that is alot of power and tourqe in a car brothers.

not to mention that we could change the gears and get a better 1/4 mile than a stock V8

point is that its all about your individual build what you do with your car and how you drive it.

technically no a V6 and V8 cant sound the same but they can have the same tone for sure.

just sayin
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Old 04-27-2011, 07:14 AM   #9
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Quote:
Originally Posted by Sweet Pea View Post
Well i Have a 6 cyl and i when i put the Cold Air Intake on at higher RPM i have more of a growl than before..next is to increase airflow to the exaust larger pipes have a different tone..

if i understand right the V6 has smaller pipes becasue its not pushing as much exaust so just by making the pipes bigger you get the same (almost) sound .. same tone different fluxuation .

so far i've talked with my Mechanic:

CAI = +18 hp
catback =+ 10-15 hp
Diablo Chip = +20-40 hp (depending on V8 or V6)

so if this is true my 312 hp V6 can sound like a V8 and have nearly the power of a stock V8 at 385 hp potentially.

my 3/4 ton 2500 suburban has a six liter V8 and nearly the same hp as my V6 could have and i pull a 31' travel trailer with my suburban. that is alot of power and tourqe in a car brothers.

not to mention that we could change the gears and get a better 1/4 mile than a stock V8

point is that its all about your individual build what you do with your car and how you drive it.

technically no a V6 and V8 cant sound the same but they can have the same tone for sure.

just sayin
Not that the V6 wouldn't be sufficient in this application, but the reason your Suburban makes easy work of pulling that travel trailer is it's low end torque. The V6 makes about 275lb-ft of torque which isn't bad, but I'm guessing the 6-liter V8 in your Suburban makes a good bit more and is available much earlier in the RPM range.
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Old 04-27-2011, 08:34 AM   #10
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Quote:
Originally Posted by Sweet Pea View Post
Well i Have a 6 cyl and i when i put the Cold Air Intake on at higher RPM i have more of a growl than before..next is to increase airflow to the exaust larger pipes have a different tone..

if i understand right the V6 has smaller pipes becasue its not pushing as much exaust so just by making the pipes bigger you get the same (almost) sound .. same tone different fluxuation .

so far i've talked with my Mechanic:

CAI = +18 hp
catback =+ 10-15 hp
Diablo Chip = +20-40 hp (depending on V8 or V6)

so if this is true my 312 hp V6 can sound like a V8 and have nearly the power of a stock V8 at 385 hp potentially.

my 3/4 ton 2500 suburban has a six liter V8 and nearly the same hp as my V6 could have and i pull a 31' travel trailer with my suburban. that is alot of power and tourqe in a car brothers.

not to mention that we could change the gears and get a better 1/4 mile than a stock V8

point is that its all about your individual build what you do with your car and how you drive it.

technically no a V6 and V8 cant sound the same but they can have the same tone for sure.

just sayin

are these accurate numbers as far as HP increase?
if so I think i might have to start adding some mods.
also would it be best to do them all at the same time so it could be tuned one time?
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Old 04-27-2011, 08:38 AM   #11
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Originally Posted by fielderLS3 View Post
Copied from the other thread. The sound is all about firing order.

Most of the V-10s any of us have experienced (mainly Dodge and Ford) are variations of V8s, so they have exactly the same size cylinders (and pistons, and head design, and manifold design, etc..) They sound different because the V8 fires every 90 degrees and the V10 fires every 72 degrees.
very interesting. i always wondered about that.
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Old 04-27-2011, 08:39 AM   #12
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Old 04-27-2011, 08:47 AM   #13
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WOW!

These some of these V-6 owners

Cylinder envy!
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Old 04-27-2011, 08:50 AM   #14
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What?? Show me a sound clip of a 4 or 6 cylinder that sounds like an LS3 grunting.
You say they can be made to sound like a 8 cylinder. If so, then why has no one ever done it? Anyone who can accomplish this would be a very rich person.
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