A remote-mounted supercharger can be an interesting option for an LS-powered project when a conventional supercharger kit is too expensive or does not fit the engine bay. One discussion on LS1Tech explored fitting a Ford GT500 M122 supercharger to a 4.8L or 5.3L LS engine, with the possibility of using two blowers for a unique setup.
The idea was to build a powerful street car without spending the price of a complete aftermarket supercharger kit. The project also raised questions about boost pressure, intercooling, throttle response, hood clearance, and engine tuning.
Why Consider a Remote-Mounted Supercharger?
A remote-mounted supercharger can provide more flexibility when there is limited room above the engine. Instead of placing the blower directly on top of the intake manifold, a custom bracket and piping system can position it elsewhere in the engine bay.
This approach requires careful planning. The mounting bracket must be strong, the drive belt must remain aligned, and the intake plumbing must support the engine’s airflow requirements.
The LS1Tech discussion focused on a second-generation Pontiac Firebird Trans Am with a proposed 4.8L or 5.3L engine. The builder considered using a Ford GT500 M122 Eaton supercharger because used and aftermarket-sourced units could cost much less than a complete LS-specific kit.
Ford M122 vs. TVS2300
The M122 and TVS2300 were two of the main options considered in the discussion.
The M122 offered an attractive price and a relatively straightforward starting point for a custom project. Participants discussed used units, custom brackets, a larger throttle body, and modified intake plumbing.
The TVS2300 was another possibility. Its larger capacity and different rotor design made it worth investigating, although the cost of available units was a concern for a budget-focused build.
Neither unit should be selected based on advertised horsepower alone. The final result depends on engine displacement, pulley ratio, airflow, intake temperature, fuel delivery, ignition timing, and tuning.
Could Twin Superchargers Produce More Boost?
The original concept involved installing two M122 superchargers on one engine. The goal was to create an unusual engine bay while potentially producing more airflow.
However, installing two superchargers does not automatically double boost pressure or horsepower. The result depends on how the compressors are arranged and controlled.
A properly engineered compound system can produce a different pressure ratio from a parallel arrangement, but both approaches require careful calculations. Two blowers can also increase parasitic losses, heat, mechanical complexity, and fabrication costs.
For a budget build, a single appropriately sized supercharger may be the more practical starting point. A twin setup makes more sense when its intended airflow, packaging, and operating characteristics have been established.
Intercooling and Intake Piping
Intercooling was another important part of the project. Compressing air increases its temperature, which can reduce performance and increase the risk of detonation.
An air-to-air intercooler may be easier to understand and package in some custom layouts. An air-to-water system can provide different packaging options, but it adds components such as a heat exchanger, pump, reservoir, and coolant plumbing.
Longer intake pipes and additional intercooler passages introduce volume and pressure losses. Their actual effects depend on pipe diameter, bends, airflow, and system design. The builder must also consider how the throttle body and bypass valve operate together.
Throttle Response and the Bypass Valve
The discussion included several examples of remote-mounted Roots-style superchargers that reportedly worked on modified vehicles. One builder described moving the throttle body to the factory intake position after experiencing poor idle behavior with the throttle body at the supercharger inlet.
That experience highlights an important point: a remote blower is not simply a matter of connecting pipes. The throttle body, bypass valve, intake volume, and engine control strategy all affect drivability.
A bypass valve allows the supercharger to circulate air under low-load conditions, reducing unnecessary work. Its location and control connections must be suitable for the particular arrangement.
A qualified tuner should review the complete setup before the vehicle is driven under boost. Fuel delivery, ignition timing, engine protection, and sensor placement all need to be addressed.
Is a Remote Supercharger a Good Budget Project?
The original builder hoped to reach approximately 450–550 rear-wheel horsepower while keeping the overall project cost low. That was a target, not a verified result from the proposed build.
The total cost would depend on the supercharger, fabrication materials, brackets, pulleys, belt drive, intercooler, piping, fuel system, tuning, and any required engine or drivetrain upgrades.
Before buying parts, it is worth measuring the available space and preparing a layout for the blower, intake piping, intercooler, and belt system. This can help avoid spending money on parts that do not fit together.
For readers comparing aftermarket performance parts, the Jackspania Racing reviews article provides another resource to consult when researching a supplier and its product offerings.
A remote-mounted M122 or TVS2300 can be an interesting fabrication project for an LS-powered car, but success depends on the details of the installation. Twin superchargers add further complexity and should not be assumed to deliver twice the boost or power.
The LS1Tech discussion is useful because it documents the questions builders faced when considering this type of setup, including packaging, intercooling, throttle response, and tuning. Anyone planning a similar build should use those ideas as a starting point and verify the design with appropriate measurements, calculations, and professional tuning.
