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What kind of force induction would you use?

  • Positive Displacement Supercharger (roots style, twin screw, etc)

    Votes: 8 57%
  • Dynamic Supercharger (Centrifugal, pressure wave, etc)

    Votes: 3 21%
  • Turbocharger (Twin scroll, variable, etc)

    Votes: 2 14%
  • Twin Charging (Supercharger + Turbocharger)

    Votes: 1 7.1%
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Supercharging vs. Turbocharging the Ecotec3 6.2L

32K views 30 replies 12 participants last post by  brj833  
#1 ·
The age old question, to supercharge or turbo charge

I'm finding the usual consensus ends up as follow;
if you start with large displacement, and need low end power, than supercharging will be best (usually trucks, or big engined cars)
if you start with small displacement, and want more usable power, than turbo charging will be best (almost always small engined cars)

I have seen trucks with superchargers, and I have seen them with turbo charger systems so obviously there is some use cases to follow here looking at the history of the subject.
Based on feedback in the forums, superchargers are favoured by 90% of members for our trucks because "if you bought a truck, you need the low end power for pulling" and obviously the ease of install, maintenance and reliability of a supercharger system vs. a turbo charger system should make it the obvious choice for a truck.

Well, I am in the 10% that just cant get over the fact that I need to give up horsepower to generate horsepower and its this inefficiency that is just sticking out in my mind and wont go away... I dont like taking the easy road out, and I think this Ecotec3 platform can benefit more from a turbo charged system and gain that efficiency that is lost from supercharging.

Negatives for a turbo charger system are usually the following;
-LAG! always turbo lag in the lower rpms where you need it, no power until higher in the rpm band
-reliability, separate oil lines needing to be fed to the turbo's, complicated boost systems and piping needed, intercooler, etc
-cost, turbo charger systems are usually custom for every type of truck, unlike superchargers that are fit to engine types
-did i miss any?

Turbo charging has gotten bigger in the last decade with most manufactures in North America now offering at least one of two turbo charged vehicles in their vehicle line ups all in the name off efficiency! With the popularity of these systems though, the industry has seen major break throughs in design, with the oil-less turbos, and the hybrid (e-turbo) systems which have an electric motor to supplement the low exhaust flow during low rpms which virtually erases turbo lag.

Which system do you think would better suit this engine and drive train package and why? also, are there any other negatives for turbo charging that do not fit under the categories of reliability or cost?
 
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#2 ·
what are your goals for the truck? Is there a numbers goal as far as horsepower? The supercharger vs turbocharger conversation is a horse that has been beaten to death many, many times. what are the end means? what are you looking to do with this rig?

I think, hands down, you are better suited for a supercharger considering the trade-offs between the two. I'm not gonna elaborate much because this has already been done by a few of our member and the logic, more often than not, is pretty sound. But i will say this....

The whole "it takes power to make power with a supercharger" statement is pretty much pointless. Yeah, the supercharger is belt driven and turbos run off recycled exhaust energy but you should be looking at the overall picture when you supercharge. (Psst, your gonna be making more power) That said, unless your plaining on making upwards of 8-900hp in this truck... is your goal? Prob not... Otherwise, IMO it is pointless to turbocharge. You'll be in the 500-700hp range with a smile on your face. And with a supercharger your going to make good reliable horsepower without the extra hassles of a custom built turbocharger system. The few supercharging options for these trucks come with warrenties which your "custom" turbocharger system, most likely, will not. And the list of pros of a supercharger could go on for days, weeks, months...

Oh yeah... and you forgot one BIG TIME negative of a turbo charger system.... HEAT! You can put it in whichever sub category of cons you would like. But the fact is, that turbo is going to make temps skyrocket. And IT WILL effect everything!

Do yourself a solid... Give procharger, magnuson, etc. a call. you will be glad you did... Just my .02
 
#5 ·
The goal is to have a reliable daily driver, that has more power but is still efficient, hopefully more efficient than the screw type supercharger system.
That is the end goal, for the same power, can it be more efficient?

I was looking at water cooled turbo's that run coolant to cool the bearings, and I was also looking at the warranties these turbo companies are giving, and they all seem to be between 1-2 years depending on turbo size and application.

If a run of the mill supercharger nets you 150 horsepower gain, I would only need a fairly small turbo system to compete with those power gains since they are naturally a higher efficiency. If I could find a solid "industrial" strength turbo that could get me the extra power, would it be a better and cheaper system and overall not really notice significant a drop in fuel mileage?

Let me ask this than, for the guys who have put superchargers on their trucks, what kind of fuel mileage change did you notice? or for those who put turbo systems, same question.

Rob,
I have found these turbo kits for specifically the 6.2L ecotec3 but I have seen a centrifugal superchargers on 2014 truck as well
http://www.neweraperformanceparts.com/i ... &Itemid=54
http://www.shop.trickperformanceproduct ... bo-kit.htm

here is the centrifugal kit from procharger
https://www.procharger.com/truck-superc ... -truck-suv
 
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#6 ·
robvas said:
Does anyone sell a centrifugal kit for the Ecotec 3 trucks? I have seen Whipple, Edelbrock, and Magnuson's centrifugal kits.

And are there any turnkey turbo kits?
Most likely not... The Ecotec engines have not been out all that long. Its takes a fair amount of R&D to develop a "turnkey" turbocharger system. And with the popularity/reliability/driviability/etc. of the supercharger kits on the market currently... I wouldn't hold my breath.
 
#7 ·
CritterGitter is correct.

A custom quality turbo system is not hard for a experienced shop to do, but for a truck, a roots/PD style blower will always be preferred IMHO as the tq is near instant and plentiful at low RPM's for towing, etc. and the ease of install as Magnasun, Lysholm, and others have nice turn key kits. The only shortcoming is their tunes included are just base tunes, and a good custom tune on the dyno is recommended. Either choice, heat is your enemy. Watch this video to see how we take care of that:

 
#8 ·
These centrifugal superchargers from Vortech are able to reach 81% efficiency, that is getting dam close to a turbo system for efficiency and they are saying its all through proper design of the supercharger... maybe one of these kit are the way to go, as they are also very basic and very easy to install and can be easily tuned (like a turbo) to provide more boost

http://www.vortechsuperchargers.com/page.php?id=656

Note: I do not see a kit for the new trucks, but I have just emailed them asking if they are working on anything... I'm assuming just a new mounting bracket is required as the rest of the parts are fairly generic
 
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#9 ·
JVD_Sierra8speed said:
The goal is to have a reliable daily driver, that has more power but is still efficient, hopefully more efficient than the supercharger system.
That is the end goal, for the same power, can it be more efficient?

I was looking at water cooled turbo's that run coolant to cool the bearings, and I was also looking at the warranties these turbo companies are giving, and they all seem to be between 1-2 years depending on turbo size and application.

If a run of the mill supercharger nets you 150 horsepower gain, I would only need a fairly small turbo system to compete with those power gains since they are naturally a higher efficiency. If I could find a solid "industrial" strength turbo that could get me the extra power, would it be a better and cheaper system and overall not really notice significant a drop in fuel mileage?

Let me ask this than, for the guys who have put superchargers on their trucks, what kind of fuel mileage change did you notice? or for those who put turbo systems, same question.

Rob,
I have found these turbo kits for specifically the 6.2L ecotec3 but I have seen a centrifugal superchargers on 2014 truck as well
http://www.neweraperformanceparts.com/i ... &Itemid=54
http://www.shop.trickperformanceproduct ... bo-kit.htm

here is the centrifugal kit from procharger
https://www.procharger.com/truck-superc ... -truck-suv
Its pretty obvious that your dead set on turbocharging your truck...

Just wanted to point that the turbo kits you linked... The first is 8 grand and the second is far from "turnkey". I think its funny that the New Era Performance folks claim there kit is cheaper than compareable supercharger systems. When you can be supercharged with headers for less than 6k. Last time I checked 2k was a significant savings.
 
#10 ·
Critter,

I am not dead set on turbo charging my truck, I just want something with better efficiency than the screw type supercharger.

Yes, those turbo kits I've link are just the one's I've found with specific mention of being able to fit the 2014+ 6.2L Ecotec3 engines, and yes they are very expensive lol I also dont like the placement of their turbo intakes being directly underneath the truck... where the mud and snow is... lol

I am looking for some insight into other systems that have very good efficiency and are also reliable for daily street use/ towing applications. The centrifugal superchargers are looking mighty appetizing, the link I posted from vortech showed they achieved 81% efficiency out of their supercharger, which is much better than the ~50% from the screw type superchargers.. this is what I am looking for, efficiency!
 
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#11 ·
We do single turbo systems installed and tuned for $6900 turn key, and you can do a good top mount for less than that.

Remember, 2014 and up (except LS3 and L(( which are now for 2016) GM engines are all direct injection now and are a completely different animal to tune.
 
#12 ·
I ran a Vortech on a 5.0 Mustang, pretty easy install, with the charge cooler you have as much piping on the intake side as a turbo (remember a centri is just a gear driven turbo), belt slip and replacement becomes your enemy, the power band is linear, no huge surge at the bottom end it just keeps puling as your RPM's increase. Much more fun with shorter rear gears and a stick than an auto and highway gears.

One nice thing about the Vortech Mustang kits is you can get one for like $2,000 brand new! Beats the $6,000 a blower for the 2014+ fullsize trucks costs.

The CTS-V Cadillac, ZL1 Camaro and ZR1 Corvette use an Eaton supercharger. It's the choice of many OEM's like Ford (F150 Lightning), Audi (S cars) as well as aftermarket builders like Magnuson and Edelbrock. That should tell you something.
 
#13 ·
http://www.vortechsuperchargers.com/page.php?id=30148

If I purchased a supercharger in the link above, got the mounting plate made and the inter cooler mounted, etc I think I would still come in under the price of the off the shelf screw type supercharger kits and have more power and greater effeciency
 
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#16 ·
JVD_Sierra8speed said:
http://www.vortechsuperchargers.com/page.php?id=30148

If I purchased a supercharger in the link above, got the mounting plate made and the inter cooler mounted, etc I think I would still come in under the price of the off the shelf screw type supercharger kits and have more power and greater effeciency
There's a little more to it than that. There's charge piping and an air filter, tensioner, getting the right size pulley ordered, then you might have to go with wider pulleys and belt for your accessory drive if its slipping.

Ignore that efficiency number. You can make the same peak HP (probably a little more) with a Vortech compared to a Eaton but you won't have the low end torque and that's what you're going to want on a truck, especially on the street. There's a reason why the F150 guys upgrade to Kenne Bells and not Prochargers (although some do).
 
#17 ·
robvas said:
JVD_Sierra8speed said:
http://www.vortechsuperchargers.com/page.php?id=30148

If I purchased a supercharger in the link above, got the mounting plate made and the inter cooler mounted, etc I think I would still come in under the price of the off the shelf screw type supercharger kits and have more power and greater effeciency
There's a little more to it than that. There's charge piping and an air filter, tensioner, getting the right size pulley ordered, then you might have to go with wider pulleys and belt for your accessory drive if its slipping.

Ignore that efficiency number. You can make the same peak HP (probably a little more) with a Vortech compared to a Eaton but you won't have the low end torque and that's what you're going to want on a truck, especially on the street. There's a reason why the F150 guys upgrade to Kenne Bells and not Prochargers (although some do).
I hear what your saying rob, after I piece it all together and for the price I could be getting an Eaton supercharger kit for the same money and for the same power gains and I get that part of it for sure!

What I want to know in this case than, is what kind of fuel mileage will I have with the Eaton kit? I dont want a street hot rod with 1000hp, I want a usable truck that can still go on 1000 mile road trips and not get 12mpg... thats why I was thinking of a different forced induction system than the screw type superchargers like the Eaton to keep some sort of resemblance of "good" fuel mileage
 
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#18 ·
JVD_Sierra8speed said:
What I want to know in this case than, is what kind of fuel mileage will I have with the Eaton kit? I dont want a street hot rod with 1000hp, I want a usable truck that can still go on 1000 mile road trips and not get 12mpg... thats why I was thinking of a different forced induction system than the screw type superchargers like the Eaton to keep some sort of resemblance of "good" fuel mileage
If you keep your foot out of it it should be pretty close to stock.

There's only a small handful of guys around here with blown 6.2's and they are pretty quiet.
 
#24 ·
So I came across this the other day;

$10k installed in 'murica dollars... but can support 500-1500 horsepower
https://goturbo.net/online-store/mustan ... nJEivkrKUk

================
Procharger has kits for the new 2014+ trucks, I cant find a price on their website but dealers are around $6k for the kit alone

================
The Hennessy HPE650 supercharger kit comes in at an estimated $24k .... comes with a 3 year warranty on everything though

================
Lingenfelter sells the TVS1900 magnuson for around $6k also with a 3 year warranty

LT1/L86 6.2L GM Gen V direct injection (DI) V8 engine
Stock long block
Full accessory drive
Stock exhaust manifolds
Stock fuel injectors and fuel pump
Magnuson TVS1900 supercharger
621 HP @ 6517 RPM & 617 LB-FT @ 3417 RPM
19 degrees timing & 6.8 psi boost at peak power.

I think the magnuson supercharger for the price, performance, and their bypass valve to let the rotors free wheel while cruising for the best efficiency... I think we have the winner!
 
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#25 ·
JVD_Sierra8speed said:
So I came across this the other day;

$10k installed in 'murica dollars... but can support 500-1500 horsepower
https://goturbo.net/online-store/mustan ... nJEivkrKUk

================
Procharger has kits for the new 2014+ trucks, I cant find a price on their website but dealers are around $6k for the kit alone

================
The Hennessy HPE650 supercharger kit comes in at an estimated $24k .... comes with a 3 year warranty on everything though

================
Lingenfelter sells the TVS1900 magnuson for around $6k also with a 3 year warranty

LT1/L86 6.2L GM Gen V direct injection (DI) V8 engine
Stock long block
Full accessory drive
Stock exhaust manifolds
Stock fuel injectors and fuel pump
Magnuson TVS1900 supercharger
621 HP @ 6517 RPM & 617 LB-FT @ 3417 RPM
19 degrees timing & 6.8 psi boost at peak power.

I think the magnuson supercharger for the price, performance, and their bypass valve to let the rotors free wheel while cruising for the best efficiency... I think we have the winner!
Sweet, when you ordering one!?
 
#26 ·
This is a funny thread...............Both people talking about wanting forced induction and also worried about fuel mileage loss.

What you are looking for, you are not going to get out of that truck. Your posts make really no sense. It seems as if your main goal is fuel efficency, with that being the case, why even buy a truck in the first place? You should have bought a little car that gets 40mpg.
Adding a supercharger or turbo isn't going to give you good fuel mileage, if you believe that's not true, take a look at the real world numbers of the Ford EcoBoost. They talked that little boosted V6 up to be an efficency engine but the guys who own them will tell you that's not the case, especially while towing.

Take your truck to a dealership and trade it in for a little car. You can get your turbo in several different cars and you can get the fuel mileage you are looking for, there you have it, best of both worlds. OR you can give the F150 EcoPoop a try, they advertise great fuel mileage with their little boosted V6. The mpg's will actually be horrible and it probably won't last long until repairs are needed but you will have the boosted truck you want. Good Luck.
 
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