guys are the 799 heads on the new 07s the same flowing and everything like the old 03 and 04 heads? or are they diffrent?

 

We've been discussing this for a while. Seems the 799 heads are first seen in 2005 on the 5.3L33 and the LS2. They have larger valves and supposedly are interchangable with the 243 heads.
I read on the corvette forum that a few guys had one of each???

 

what would u think of milling them .30 and doing ls6 valves on them ...i am going witha a 220/220 cam should that combo work or what can i do to my 799 heads

 

I'd leave them alone or mill them a little if you want to increase CR but for that cam neither are necessary. All I did was swap to 918's (springs) and mine are holding up fine

 

well i wanted more flowing....i was going to do ls6 valves with a 3 angle valve job and mill them .30 and do some pocket porting what u think???

 

afaik the valves in the 799's are the same as the 243's. Contact Richard @ WCCH, I'm sure he can offer better insight on working them than I can.