The Atomic EFI will fit your carbureted engine. The Atomic EFI was designed to bolt on to any square bore, 4-barrel intake. This includes common 4150 and 4160 designs. These intakes can be found on countless engines for muscle cars and hot rods including small and big blocks by Ford, Chevy, and Mopar. There are even aftermarket intake manifolds to convert LS engines.
If your vehicle already has an electric fuel pump with a return line in place, you might not need to replace it.* If this situation fits your car, consider the Throttle Body Kit which comes with the Throttle Body, Power Module (with Wide Band O2 sensor), and Handheld Controller.
*For an existing fuel system to work with the Atomic, we recommend the system be able to maintain 42psi constant and use 3/8th or “Dash 6” fuel line rated for EFI. The Atomic can support a return fuel line if needed for your application.
MSD has led the automotive world in performance ignitions for over 40 years and now we are rewriting another industry standard. Introducing Atomic EFI™, a throttle body kit designed to update engines using outdated carburetors with all of the modern benefits of a fuel injection system. Current aftermarket options to convert a vehicle to EFI can be difficult and time consuming, but with the all-new Atomic EFI™ all that will change.
Atomic EFI™ was designed for the average car guy, like you. Installation is easy and replaces a 4-barrel carb with just basic tools. Also, instead of having countless sensors, we incorporated the TPS, MAP, IAT, and more right in the throttle body so that you don't have to worry about installing them. Atomic EFI™ features a returnless fuel system, which means you can keep your existing fuel tank pickup and never have to modify the gas tank.
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