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Custom Dodge Ram Performance Mods - Engine - 5.7 HEMI V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 5.7-liter HEMI® V8 engine - 390 horsepower, 407 lb-ft of torque.


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  #1  
Old 03-27-2010, 02:19 PM
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Lightbulb Turbocharger vs. Supercharger

Ok so which one will get better performance out of my ram?
which one cost less?
what are good brands for both to look into?
I have been looking all over the net and am being bombarded I cant decide what do you guys think?
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Old 03-27-2010, 02:50 PM
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I would look at a supercharger rather than the turbo. You will get better power along the whole power band with the supercharger. Superchargers also sound cool!! They are whining the whole time rather than the turbo only when you shift.

Cost wise they will be about the same. I would go look at Procharger for what you are looking for. I hear they have really good customer service which is pretty important with something like that.
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Old 03-27-2010, 02:53 PM
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either one would be awesome to have but IMHO I think I would do the turbo. it's a little different and would draw more attention when you brag about your truck. it also doesn't rob you of hp to spin it. with a properly sized turbo and with the right A/R you could build a setup that spools quickly and would be a lot fun.

a centrifugal blower like the Procharger works like a turbo is a sense that it likes rpm. not sure if there are any positive displacement blowers out there for our trucks but they will give you some crazy low end power but will drop off in the upper rpms with compared to a turbo or centrifugal.
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Old 03-27-2010, 02:58 PM
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thanks for the suggestions i think i am leaning more towards the supercharger my dad has been trying to talk me into it for awhile now
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Old 03-27-2010, 02:59 PM
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I think that is the better choice. The only time I would go with a turbo is if you were doing a twin set up. Have one at the lower end and one at the top end. That would give you wicked power gains.

Well take a look at Procharger like I said, they claim to give you 45%-50% power gains
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Old 03-27-2010, 04:18 PM
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this comes from the Superchargers online website
While the supercharger is generally considered to be a better method of forced induction for most street and race vehicles, the turbo will always have its place in a more specialized market. Superchargers generally provide a much broader powerband that most drivers are looking for with no "turbo lag". In addition, they are much easier to install and tune, making them more practical for a home or novice mechanic
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Old 03-27-2010, 10:38 PM
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i thought the same but my bolt on are cheaper than a turbo supercharger so its up to you. Are you doing the install?
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Old 03-27-2010, 10:54 PM
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Couple arguments both ways here. Turbos have the lag time due to exhaust gas velocity, however, they're more tunable (not easier mind you) and can generally flow a LOT more than a supercharger which is why diesels can flow 100+psi off of compound turbos. For superchargers, they have instantaneous response but do have a max flow rate based on availiable space to mount and size of supercharger, they also CANNOT be compounded like a turbo can as they have to run off the belt.

In my mind and experience, I prefer superchargers for gas engines and turbos for diesels. Also, unless you're looking to upgrade your bottom end big time, you can only run up to 9psi boost max before you start threatening your engine integrity. For superchargers Paxton and Prochrager make great systems, Paxton is a roots style and Procharger is a centrifugal style. I prefer centrifugal since it's modular between vehicles, where as a roots type is vehicle specific as it replaces the intake manifold.
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Old 03-28-2010, 12:52 AM
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^^^^Paxton's are also a centrifugal. A roots style would be Kennebell, Whipple, Magnuson, or Eaton to name a few.

I'm new to the HEMI and was wondering what is the limiting factor in the bottom end with these motors and boost?
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Old 03-28-2010, 01:22 PM
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The stock cast pistons will hold to around 500-530 hp at the crank and the rods will do slightly more. Obviously I am partial to turbochargers, due to the turbo being much easier on the transmission and driveline and with having a higher performance potential. Here are a few videos of mine that show turbo lag is only for diesels or weak factory turbo 4 bangers.



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