PPE's new cast iron heads?

[Dozerboy]

2004.5-2010 GM 6.6L Duramax Cast Iron Cylinder Head (One) LLY/LBZ/LMM

50 States Emissions Legal (E.O. D-701-38) The OEM Duramax cast-aluminum cylinder heads fall short over time - the different heat expansion rates between cast-iron engine block and cast-aluminum cylinder head cause head gasket scrubbing, and eventually blown head gaskets. The aluminum cylinder...

ppepower.com

Anybody seen/used these and got any input? I don't really see the point other than to get rid of the cups on the LB7s. They didn't even do anything to make them flow any better. I've seen a video about how much better they would be at preventing head gaskets failures... and for big power trucks..... Smells kind of like BS to me, but I'm not an expert.

 

[darkness]

I just saw those on ‘Truck Master’. Be interesting to see how they work.

 

[1FastBrick]

It says they are only good for LLY-LMM. They are still working on the LB7 version... I found this article on them. They are 85 Lbs. Vs the stock 35 Lbs.

Duramax Iron Heads Upgrade

Duramax Iron Heads Upgrade ..Inside PPE’s New Cast-Iron GM Duramax Diesel Performance Upgrade Cylinder Heads

www.dieselworldmag.com

 

[1FastBrick]

2004.5-2010 GM 6.6L Duramax Cast Iron Cylinder Head (One) LLY/LBZ/LMM

50 States Emissions Legal (E.O. D-701-38) The OEM Duramax cast-aluminum cylinder heads fall short over time - the different heat expansion rates between cast-iron engine block and cast-aluminum cylinder head cause head gasket scrubbing, and eventually blown head gaskets. The aluminum cylinder...

ppepower.com

Anybody seen/used these and got any input? I don't really see the point other than to get rid of the cups on the LB7s. They didn't even do anything to make them flow any better. I've seen a video about how much better they would be at preventing head gaskets failures... and for big power trucks..... Smells kind of like BS to me, but I'm not an expert.

After looking on there site it shows they have the LB7 version out now.

2001-2004 GM 6.6L Duramax Cast Iron Cylinder Head (One) LB7

50 States Emissions Legal (E.O. D-701-38) The OEM Duramax cast-aluminum cylinder heads fall short over time - the different heat expansion rates between cast-iron engine block and cast-aluminum cylinder head cause head gasket scrubbing and eventually blown head gaskets. The aluminum cylinder...

ppepower.com