12 valve IH cast head vs. non-IH cast

H

hamlin

I Don't Know
I have a IH cast head on my truck now and a non-IH cast head sitting on the shelf. I would like to know what the main difference, if any, there is between them.One main concern is if one is superior when it comes to porting. I have came across threads before where the IH heads seem to be the choice, but I am sending one off to have fire ringed and the intake shelf removed soon and would appreciate any input if i should pull the IH head or just send the one that's on the shelf already. Thanks
 
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IH is correct. Brazil is also Comparable. Chinese cast are good for stock engines, horrible for porting, and bad core shift.
 
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