Just did some work on the old 6.0 today. 6.4 banjo bolt swap. The 6.4 bolt flows way more and doesn't have a check valve in it. it is the bolt that goes right into the front of each head to supply the injectors with low pressure fuel. I have bigger injectors, a high hp tune and a blue spring upgrade already. Next fuel system upgrade will be the regulated return but still use the stock pump.
any 6.0 guy that is researching this upgrade will see alot of different opinions. They may be check valves but they don't work. I could blow through mine the same amount but both ways. And about a teaspoon of fuel came out the head and line when removed. Not much at all.
so after I primed the system with the key 3 times and checked for leaks I fired it up. started exactly like normal for a warm start but idled noticably smoother. After idling for a couple minutes I slowly raised the rpm and it was smoother above idle. I havnt taken it for a drive yet but I'm expecting some good results.
any 6.0 guy that is researching this upgrade will see alot of different opinions. They may be check valves but they don't work. I could blow through mine the same amount but both ways. And about a teaspoon of fuel came out the head and line when removed. Not much at all.
so after I primed the system with the key 3 times and checked for leaks I fired it up. started exactly like normal for a warm start but idled noticably smoother. After idling for a couple minutes I slowly raised the rpm and it was smoother above idle. I havnt taken it for a drive yet but I'm expecting some good results.