Quote Originally Posted by copgtp View Post
Well then obviously it's true if it's on wikipedia............

The heads do flow a little better, we said that. But the difference better the two heads is so small it's not worth the time / money it takes to do the swap.

And the sodium filled valves thing is a misconception that has been floating around for quite a while.




OMG soooooooooooooooo much mis-information that is being given out in this thread!!!! A Gen V blower is vastly better than a Gen III (L67) blower. The best ported L67 blower doesn't move as much air or stay as cool as the stock Gen V casting.
my tuner said he weighed the valves and they were lighter and bigger. not worth a swap it you were just doing that, but an advantage over l67 heads regardless. there was no reason for you to be sarcastic to me