Fill it up again Dummy
Join Date: Sep 2012
Location: Central Valley, Sierra Mountains, California
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Not to my knowledge, I have not heard that at all. The 6.0 has been beaten with a stick pretty badly for it's fair share of issues but with proper maintenance and upkeep and it is a solid engine.
My honest opinion: it is NOT the engine to tune for many reasons the main two are it's size and the fact it has only 4 head bolts per cylinder.
The problem with it's size is heat, look at the size of even the exhaust valves. The combustion has much better flow dynamics with the 4 valve per cyinder design but the exhaust valves can't take the heat from the additional heat a hot tune produces.
I did cylinder head work for 7 years I have seen all different head designs beleive me.
If you have it tuned and push it then I would say yes the heads are going to be at risk of being damaged from heat and cracking will always be a possibility.
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2006 F250 LARIAT CCSB 4X4
ARP Studs, O-Ringed Heads
X4 PHP 65 HP Custom Tow Tune
CAT EC-1 Coolant, IPR Coolant filter
Fass-125 to a Adjustable Pressure Reg.
Turbo-back SS 4" pipe, Corsa Muffler -7" Tip
6.4 starter, DC Power 270 w/ AGM regulator
Die Hard Platinum AGM all 2/0 Cables
Fabtech Radius Arms
7" lift w: Icon Progressive Coil Springs
2008 up Carli/Deaver rear springs
2000 Watts of McIntosh Bliss
All riding on some Fatty-Daddy 38/15.50/18 Toyo's