This is the Hemi V8 engine based off the Dodge Demon. The engine produces about 810 Crank HP and 770 Crank lb-ft. This engine will rev up to 9500 RPM, but you won't be doing that very long as it will drink the fuel tank. Pair this engine with the TORQUEFLITE 8HP90 (included in this mod) and you can bring it up to 200 (That is if you can control it at those speeds). Don't expect to be going record speeds with a load. Remember, this is a gasoline engine. They don't have the low end torque like the Diesels do. EDIT: I've had a lot of complaints about how slow this is. I replaced the original "Runaway Demon" transmission with the TORQUEFLITE 8HP90 tranmission. The difference is this transmission uses the real gear ratios from the actual Dodge Demon. Turning on Auto-shifting along with High Power Mode will make this transmission shift like the real car. I hope this helped with that small issue. And remember, this mod is NOT MEANT FOR PULLING LOADS!!!! This is purely for fun. Supported trucks All SCS trucks Dodge Challenger Will support any vehicle that was based off the skoda.superb platform.