Which Supercharger, Magnuson or ProCharger?
Thanks, Mike
Maggie - more low end grunt than Procharger but lower overall HP.
Procharger - tends to make gobs of power up high in the rpm band. Can get to 600 rwhp on stock bottom ends.
APS TT - best of both worlds, but more $$.
Add cubes - normally aspirated - heads/cams or stroked. Depending on HP goals can run from moderate to very expensive.
Reliability is a function of installer, components (read $$), and how aggressive you get with the boost (read HP). No such thing as a free lunch with any of it. Need to keep your goals in mind and talk with a reputable shop.

Maggie - more low end grunt than Procharger but lower overall HP.
Procharger - tends to make gobs of power up high in the rpm band. Can get to 600 rwhp on stock bottom ends.
APS TT - best of both worlds, but more $$.
Add cubes - normally aspirated - heads/cams or stroked. Depending on HP goals can run from moderate to very expensive.
Reliability is a function of installer, components (read $$), and how aggressive you get with the boost (read HP).
Mike J.
Orlando
In October 2006, Reeves Callaway and Jerry Magnuson entered into an agreement such that Callaway Cars has become responsible for all product development, sales, marketing and distribution of all Magna Charger systems and parts for C5 and C6 Corvette applications. The systems are still available from all Magna Charger dealers. Callaway engineers could have selected any supercharging or turbocharging device for the Callaway Corvette and selected the Magna Charger direction.
Advantages to the Roots-style Magnuson design:
- Roots-style systems produce more hp per psi than centrifugal superchargers (at any given power level, lower boost easier on engine parts);
- Internal bypass valve provides low parasitic loss during idle and cruise conditions (less than 0.5 bhp);
- Intercooler is located in manifold base simplifying inlet plumbing (patent pending);
- lower speed operation is easier on supercharger components for increased durability, reliability
- supercharger internals are manufactured by Eaton Corp., the leading supercharger supplier to the world's vehicle manufacturers (Corvette components are very similar to the Ford Lightning, Aston Martin and Jaguar units)
- much less complex than turbocharging systems, and allow original location for OEM catalytic converters (less parts to cause problems, and avoids emissions regulation compliance problems).
Disadvantages to the Roots-style Magnuson design:
- increased engine package height (approx. 1.7") requires hood replacement (several aftermarket hoods are available)
- fixed displacement limits maximum hp increase as a function of Magna Charger model (we offer an MP122 system for 400+ inch engines and we're working on a "TVS" system to theoretically support just over 1000 bhp)
To sum up, selection depends on your application. For street-driven Corvettes where you want a broad torque curve with excellent low-end torque, OEM-level durability and reliability, retaining near-original fuel mileage and emissions compliance, and you don't mind changing the hood, then you may want to consider Magna Charger.
Last edited by mcv; Mar 25, 2007 at 12:00 PM.




I put the goodyear gatorback belt on and have not had a single bit of trouble after 10,000 miles and numerous runs down the 1/4 mile.


best 1/4 mile - 11.1@123.6
Good luck making your decision.


In October 2006, Reeves Callaway and Jerry Magnuson entered into an agreement such that Callaway Cars has become responsible for all product development, sales, marketing and distribution of all Magna Charger systems and parts for C5 and C6 Corvette applications. The systems are still available from all Magna Charger dealers. Callaway engineers could have selected any supercharging or turbocharging device for the Callaway Corvette and selected the Magna Charger direction.
Advantages to the Roots-style Magnuson design:
- Roots-style systems produce more hp per psi than centrifugal superchargers (at any given power level, lower boost easier on engine parts);
- Internal bypass valve provides low parasitic loss during idle and cruise conditions (less than 0.5 bhp);
- Intercooler is located in manifold base simplifying inlet plumbing (patent pending);
- lower speed operation is easier on supercharger components for increased durability, reliability
- supercharger internals are manufactured by Eaton Corp., the leading supercharger supplier to the world's vehicle manufacturers (Corvette components are very similar to the Ford Lightning, Aston Martin and Jaguar units)
- much less complex than turbocharging systems, and allow original location for OEM catalytic converters (less parts to cause problems, and avoids emissions regulation compliance problems).
Disadvantages to the Roots-style Magnuson design:
- increased engine package height (approx. 1.7") requires hood replacement (several aftermarket hoods are available)
- fixed displacement limits maximum hp increase as a function of Magna Charger model (we offer an MP122 system for 400+ inch engines and we're working on a "TVS" system to theoretically support just over 1000 bhp)
To sum up, selection depends on your application. For street-driven Corvettes where you want a broad torque curve with excellent low-end torque, OEM-level durability and reliability, retaining near-original fuel mileage and emissions compliance, and you don't mind changing the hood, then you may want to consider Magna Charger.

TOTALLY!!
The Best of Corvette for Corvette Enthusiasts
In October 2006, Reeves Callaway and Jerry Magnuson entered into an agreement such that Callaway Cars has become responsible for all product development, sales, marketing and distribution of all Magna Charger systems and parts for C5 and C6 Corvette applications. The systems are still available from all Magna Charger dealers. Callaway engineers could have selected any supercharging or turbocharging device for the Callaway Corvette and selected the Magna Charger direction.
Advantages to the Roots-style Magnuson design:
- Roots-style systems produce more hp per psi than centrifugal superchargers (at any given power level, lower boost easier on engine parts);
- Internal bypass valve provides low parasitic loss during idle and cruise conditions (less than 0.5 bhp);
- Intercooler is located in manifold base simplifying inlet plumbing (patent pending);
- lower speed operation is easier on supercharger components for increased durability, reliability
- supercharger internals are manufactured by Eaton Corp., the leading supercharger supplier to the world's vehicle manufacturers (Corvette components are very similar to the Ford Lightning, Aston Martin and Jaguar units)
- much less complex than turbocharging systems, and allow original location for OEM catalytic converters (less parts to cause problems, and avoids emissions regulation compliance problems).
Disadvantages to the Roots-style Magnuson design:
- increased engine package height (approx. 1.7") requires hood replacement (several aftermarket hoods are available)
- fixed displacement limits maximum hp increase as a function of Magna Charger model (we offer an MP122 system for 400+ inch engines and we're working on a "TVS" system to theoretically support just over 1000 bhp)
To sum up, selection depends on your application. For street-driven Corvettes where you want a broad torque curve with excellent low-end torque, OEM-level durability and reliability, retaining near-original fuel mileage and emissions compliance, and you don't mind changing the hood, then you may want to consider Magna Charger.

I love my Maggie 122.

We rebuilt the engine in this Corvette using the stock crankshaft, but we used Callies Compstar rods and Diamond pistons, and Total Seal rings. We installed a mild Lingenfelter GT2-3 camshaft and Patriot Stage 2 LQ9 heads. Nothing expensive, just a good selection of parts.
An ATI ProCharger D-1SC was used and is pushing 16 psi of boost. Bob
It was tested against a roots 112 and destroyed it by 200hp
at the same psi . The roots fell off at higher rpm .A stock vette with a Kenne Bell 2.6 or 2.8 will produce over 400 rwtq at 1,500 rpm and hold that solid until you shift .
They have a dyno on the site of a vette making 700rwtq at 2,000 rpm , its torque before the peak was 1,000 lb/ ft at the flywheel , 900 something flywheel hp .
Some little 281 ci mustang cobras are trapping 135-140 mph with the same screw supercharger . Imagine a 364ci with one
It was tested against a roots 112 and destroyed it by 200hp
at the same psi . The roots fell off at higher rpm .A stock vette with a Kenne Bell 2.6 or 2.8 will produce over 400 rwtq at 1,500 rpm and hold that solid until you shift .
They have a dyno on the site of a vette making 700rwtq at 2,000 rpm , its torque before the peak was 1,000 lb/ ft at the flywheel , 900 something flywheel hp .
Some little 281 ci mustang cobras are trapping 135-140 mph with the same screw supercharger . Imagine a 364ci with one

BTW, couldn't be more happier with Steve and Patrick at Vararam.













