Thinking on selling my 6.0 with 240k on it and ALOT of recent work done to it. Wondering your guys thoughts on the 6.4??? Seems more reliable and looks like i need dpf delete and spartan tunes only way to go.
Things holding me back.... I love the orange color of my 2004 and the 6.0 whistle. Havent seen the interior in person of the 6.4 harleys from the pics not sure if i like the "boxy" look as opposed to my smooth edge interior. Im looking to sell mine for 16k and by looking around looks like im into 40k for 6.4 harleys
So lets here the likes/dislikes of the two models and is it worth thr extra coin or drive mine into the ground!!!


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Only you can make that call. I was just facing this dilemma and the thought of jumping back into stupid payments again wasn't appealing. So I've decided to put the $1k or so into mine and do the headgaskets, ARP's and all of the other little things that need attention.

The 6.4's are really nice trucks though and I would bet they are far less problematic than a 6.0. However, they do share the same heads as the 6.0, and the same stupid 4 bolt per cylinder layout. However, they use larger bolts so they seem to hold better.

I also wouldn't use spartan tuning if I got one, I would use KEM or Innovative Diesel. Spartan had issues with shifting and it doesn't sound like they've fixed any of it. I know there are a lot of guys using it and a lot of happy guys, but I have never had an issue with anything I've used Innovative tunes on.

The 6.4 is a beast. Tuning and DPF delete and you're rocking a solid 550 rwhp daily driver. That'd take quite a bit for us to achieve with a 6.0.

The two main reasons I couldn't do it... payments, and the vegistroke.