Since the day the Dodge Challenger SRT Hellcat came on the auto scene and his brother the 4-door sedan Dodge Charger SRT Hellcat are unbeatable duo with those stunning performance they own, 707hp and 650lb-ft of torque! And who needs more power?

Nowadays it seems that many people want to reach beyond the stock performances and the tuning jobs are expanding fast, especially for the Hellcat tune ups! There is one company which makes serious improvement on the Hellcats, yeah you will recognize it by the name, Serious HP!

So what to expect from them? We all know that the stock 6.2-liter V8 HEMI is far away more capable of what is offered now, and these guys from Serious HP, thanks to the E85 conversion, pushed the performances on a whole new level, 856hp at the crank!

But wait just a minute this is not the only improvement which also provokes additional 70lb-ft of torque from the HEMI, there are various more, like besides the gas there is additional 85% ethanol kit, supported by more efficient fuel pump, injectors with larger capacity, strengthened and improved driveshaft and upgraded ECU. So if they reached 856hp now, what else is left if they succeed to reprogram the 8-speed automatic transmission software from ZF? Maybe 1,000hp? Who knows, but if that happens then the Hellcat will be the ultimate muscle car ever produced!

Now watch the video and see the 856hp in action.