Compression Ignition Addict
Join Date: Apr 2010
Location: San antonio TX
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Well if you plan on running it stock I would say go with the 6.7, if your going to remove the DPF and tune it then go with the 6.4.
That being said I know the 08-10 F450's seem very sturdy, heck the rear axle is a dana 110, which is a square tube heavy heavy duty axle. But the gearing is 4:30 or 4:88 and when mated to the 6.4 equals really really really ****ting mileage. And they have 19.5" wheels which use commercial tires which last longer but ride stiff. I hear the 6.7's get substantially better mileage.
I think the 08-10 F450's are a heavier duty than the 11+ F350's, the question is do you really need the F450?
You say the GVWR of your next tow hauler will be 18-21K, but what do you expect it to weigh?
Also, depending on the states you will be traveling through, you may need a CDL. I know RV's are supposed to be exempt from 26K combined GVWR rules but some states dont seem to think a toy hauler is an RV. Just something to look into, talk to the DMV/DOT of the states you'll be going through.
2008 (Job 1) F250 King ranch 4x4, snow plow prep package with 2.5 level. Black Maxx, B&W Diehard platinums. Dieselsite coolant and transmission filters, NCU Motorsports/amsoil oil bypass kit. Turbo blankets, 5.5 PMF traction
Please collect and message me Shell, Rotella oil cap codes aka "my miles matter"
I'm trying to save up for a hat or something.