3500 Heads

[MidgetRacer]

Can someone explain to me the differences between 3500 3.5L aluminum heads from a '04 Malibou and previous Gen III heads. I thought there was a thread somewhere with this info, But I cannot find it.

Thanks!
Matt

[bszopi]

http://60degreev6.com/forum/showthread.php?t=32367&highlight=3500+differences

Third post discusses alot of the differences. There is further discussion throughout the thread though.