The limited slip offers more traction but will have to be serviced more often and more attentively. The open differential is the weaker of the two in terms of performance but requires less maintenance. You will either walk away with a limited slip or an open differential. The factory is going to equip the Challenger with one of two carrier types.Last week, I spent much of the day on Thursday and Friday at Ford's media clubhouse that had been setup at Kruse and Muer for the 2021 Woodward Dream Cruise.The Motor Company had a handful of press conferences during Dream Cruise week, along with offering the media a close-up look at their current. Ford Mustang GT500 is smoother, less violent and more refined than the Hellcat Challenger.The result is a massively powerful and turbocharged LS V8 capable of cruising at 160 mph down an airstrip! Once the video pans over to the engine bay, one can witness the massive block and turbo pipes that make all of these ludicrous figures a reality, while the owner rattles off specs and all he's done to his beloved little GMC Syclone.Later-model Dana axle identification charts may start off with the first three digits of 200 rather than 60 or 61, for example 200561-1. The Dana axle identification BOM's are six digits long and begin with the number 60 or 61 followed by 1 or 2 digits, such as 605561-1. The Bill of Material (BOM) number is used to identify Dana differentials.Thanks to that 4.71 first gear, the Hellcat uses a tiny 2.62:1 rear axle ratio, yet delivers a 12.34:1. How hard could a Hellcat swap be? The answer is really hard, and plenty expensive.".For the cat delete, I've eliminated COT/EOT Enrichment (0.0), set a minimum FA Limit (FA Max), bumped the Converter Overtemp and Exhaust Overtemps up to 1850F (along with the targets), and gone through the Engine. We're going to eliminate the cats to avoid cat temp fueling and swap to a 3.09 gear. Looking to improve our 1/2 speeds this season with the 2016 Hellcat on E85 and 17psi of boost.For perspective, to achieve the same value with a. Thanks to that 4.71 first gear, the Hellcat uses a tiny 2.62:1 rear axle ratio, yet delivers a 12.34:1 torque multiplication factor in first gear.Hemituner Performance OE Replacement Billet "ZF Style" Differential (2015+ HEMI Cars) Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name.We offer genuine factory direct OEM Mopar parts and accessories to keep your vehicle running smooth. is proud to have an exceptional parts specialists staff that will answer all of your fitment questions.2006 Charger Brilliant Black R/T w/R&T Package, 6.1 Arrington based 426 Hemi 13:1 compression 2016 Hellcat Charger rear cradle and brakes swap, DSS 4" custom driveshaft, 3.09 Scat Pack rear diff. I have a 3.09 diff out of my wife's 16 Scat Pack Charger in mine.