I have a 5.3 that is getting freshened up and I am going to run a SC (Magna) on it. I have had it suggested to me that the stock heads will work fine. I'd like to know what some of you are running to compare as to what I need. Thanks for the help.

 

Stock heads here.

 

Stock heads will be fine.

 

Mine are stock too

 

ran stock 863 heads on my 5.3, and stockish 317 heads on my 408

 

Stock on mine too.

 

While I don't run a SC, I am still boosted. I run stock 862's and 14psi

 

If you're in there and have the extra money you would stand to benefit from from some WCCH heads and a nice blower cam though. Anyone have any data when upgrading to an aftermarket H/C on a Radix setup?