...in reference to the GM Superchargers

[*89x2*]

In reference to the Eaton supplied superchargers to GM:

Is the new Callaway Magnacharger for the LS3 the new Eaton manufactured 4 lobe 1900 series?

From what I understand; Eaton has supplied GM with the TVS 1900 4 lobe positive displacement supercharger for the new 09 CTSV that uses a stock LS3 bottom end and generates 550 HP and 550 torque.​

The 2300 series is used on the new ZR1 with the forged bottom end 6.2 and CNC ported cylinder heads.​

These new units are supposed to smaller in size than the previous generation 3 lobe magnachargers.​

Can you clarify?

The Callaway Magnacharger for LS3 uses the MP122 design supercharger. Eaton supplies the rotor packs; they refer to this design as "5th Generation". This design uses high helix angle (60 degree) 3-lobe Roots-style rotors and increases a stock LS3's power to 580 bhp (SAE) with 7 psi of manifold pressure. It's capable of much higher power increases with larger displacement and/or more aggressive engine internals. This supercharger, and its smaller MP112 cousin, has been service-proven in a number of applications. Their durability and operating characteristics allow us to provide a 3 year/36,000 mile warranty on the kits. We've also used them in Callaway Corvettes and Callaway C16's which are also covered by a warranty of at least 3 years or 36,000 miles.

As good as Eaton's "5th Generation" rotor design is, the "6th Generation" shows much promise. Eaton also refers to the new design as "TVS" or "Twin Vortices Series". As you point out, they have tooled up for 1900 and 2300 units and will be standard equipment on the 2009 CTS-V and ZR1. The new 4-lobe, 160 degree rotor and complementary housing design will provide higher pressure ratio capability, increased airflow capacity, higher isentropic efficiency (reduced input power requirement), and lower noise level. Callaway plans to introduce new systems for Corvette LS-engines in 2009 using the TVS supercharger design. Some of the things left for us to do include development of drive assemblies, intake manifold assemblies, intercooler assemblies, front and rear end plates, system calibration, testing and validation, emissions compliance testing, and other sub-projects.​

Even though the MP122 has 2000 cc displacement and the TVS2300 has 2300 cc displacement, the two units are very similar in case size. The TVS1900 is same height and width as TVS2300, but it's 1.42" shorter.​

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[Hib Halverson]

Further, the Cadillac LSA does not use a "stock LS3 bottom end" though it does share many features of it.

The LS9 does not have CNC-ported heads.

The first application of the TVS family of blowers in North America is supposedly an aftermarket blower on one of the Roush products. The next application to come to the N.A. market will be on the 09 ZR1 and CTS-V.

None of these new Eaton Gen 6 blowers are "Magnachargers". That name belongs to Magnuson Products and refers only to aftermarket Gen 5 blowers Eaton sells to Magnuson which, in turn, sells them to Callaway.

And, yes, the new TVS series is a smaller package size than the "old" 3-lobe-rotor Gen 5 blower.

 

[*89x2*]

Hib, thank you for clarifying that a bit :cool

Callaway Cars handles all of Magnuson's Supercharger R&D, customer/product service, support, sales, etc. for the Corvette product line (since 2006) :cool
The products are now known as the Callaway MagnaChargers

 

[TurboLuigi]

Great info!

Thanks,

-Luigi
:cool

 

[Aurora40]

In case it's of interest to anyone:

http://216.182.211.32/techlink/images/issues/ref_gds/supercharger_english.pdf

A GM reference on their superchargers. Nothing real eye-opening in it.