5.7 vs 4.7
We have 2 of each vehicle all are quad cab, all came with limited slip rear and factory tow package all 4 are 2009
all trucks have appx 37k on them
4.7 we average 14 to 17 city depending on the driver highway 18 to 23
5.7 we average 11 to 14 city same drivers, 17 to 20 highway
the mds is fairly useless unless you are on level roads highway speeds and we had to have plugs, not all, replaced on both 5.7s they were fouled and i suspect the mds and lack of firing some plugs at times may be the problem
the 4.7 pulling the trailers we ahve from 2500 to 4100 all pull with no problem, of course the hemis are better for the heavier loads, but for the mileage we do much better with 4.7s. We are in ny state where there are a few big hills to pull up and the 4.7 has had no problems.
Only mods on all 4 are k&n drop ins
on another note the hemis have been in and out for a lot of pain in the butt things engine wise and the 4.7 only routine maintainance.
Bottom line if you want to be faster than others do the 5.7, if you want better mileage go with 4.7
just our opinions
richie, matt, d.w and mike aquatic construction
RAM 1500 SLT QC 2009 INFERNO RED, ARE Lift Lid ,Spray on Bed Liner, K&N Drop In, Pioneer DEH P8400UB, Alpine Amp, Mopar Kicker sets in all doors and dash, 2 Polk 10" Subs, Polk AMP, SteelCraft Nerf Bars, Mopar Fog Lights, CalTrend Seat Covers, WeatherTech Front Mats, Putco SS Fender Liners, SuperBumper SS Hitch Step/Impact Absorber, Onki Aegis SS Center Guard, PIAA 2100 driving lights