So many other factors effect it more than 2 octane points. 93 would honestly be a waste unless you are tuned for it and can run additional timing which the factory ECU isn't setup to do. Even then, the factory 5.7L is pretty low compression for today's standard and just won't benefit that much from it. Independent tests show the Jeep Grand Cherokee 5.7 Hemi can reach 60 mph in around 5.5 seconds bone stock. Car and Driver recorded a 0-60 mph time of 5.6 seconds for the rear-wheel drive model, while Motor Trend managed 5.5 seconds in their testing of a 4WD Limited. The 5.7L has AWD and had Quadra Drive II offroading system (for 05-11 I believe) and a little different on newer ones, and is just a better package for those who actually off road. If you like to take your jeep for off-roading, then take the 5.7. But make sure it’s 4x4. Jeep Grand Cherokee Trailhawk. A 5.7-liter Hemi V8 engine is a $3,295 option starting with the Limited trim, packaged with standard four-wheel drive. the all-wheel-drive Trackhawk rockets Search over 31 new 2023 Jeep Grand Cherokee Summit Reserve. 5.7 L V8 Hemi Mds Vvt, Advanced Protech Group Iv, Luxury Tech Group V, 2 Nd Row 60/40 Bench W/Manual 2021 Jeep Grand Cherokee 0-60, Top Speed And Quarter Mile Times. Home; Used 2020 Jeep Grand Cherokee with Limited X 4dr SUV 4WD (3.6L 6cyl 8A) priced at $38495. So remarkable I had share this with everyone, I shaved nearly 3 tenths of a second off my 0-60 time. So heres how I stacked up before the tune up. Heres my 2006 Black Jeep Grand Cherokee Limited 5.7L Hemi , Stock HP 330 , Current Est 385-390HP. Mod's including tune up:K&N 77 series CAI, Magna Flow Exhaust System, Diablo Sport Trinity Tuner All specifications, performance and fuel economy data of Jeep Grand Cherokee 5.7 V8 Hemi Overland (240 kW / 326 PS / 322 hp), edition of the year 2006 since mid-year 2006 for Europe , including acceleration times 0-60 mph, 0-100 mph, 0-100 km/h, 0-200 km/h, quarter mile time, top speed, mileage and fuel economy, power-to-weight ratio, dimensions, drag coefficient, etc. mpSXjJ.