[Chevelle-List] Vortec Heads

[Dan McIntosh]

Hi, Has anyone used the Chevy Vortec heads on an older motor. I was wondering a couple things about them, such as: Will my stock exhaust manifolds bolt up? Do I use regular head gaskets? In the Jegs book, it says to use self aligning rockers, yet I         don't see any listed. What are self aligning rockers? Is         this another term for roller rockers? Is there really any performance gain to be had over stock old     school heads? Any input will be appreciated. Thank you.   Dan McIntosh 64 Impala SS