Heads rebuilt to stock specs can I go to a more aggressive cam?

[triple_green]

not looking to do this right now, but wondering: I just got the heads rebuilt to stock specs, would I able to go to a more aggressive cam profile with out having to change out things in the heads again. I'm not looking to go to a wild cam, maybe just one step up.

Thanks!

[c00nhunterjoe]

In most cases bone stock heads will support up to a .500 lift cam without clearance issues. But most likely if you are sinking the money into a real rebuild of a set of 50 year old iron heads, you will be spending close to the money needed to buy a new set of aluminums. If you decide to definitely spend the money on the steelies, its only pennies more to machine the guides for lift clearance.

[metallicareload99]

In most cases bone stock heads will support up to a .500 lift cam without clearance issues. But most likely if you are sinking the money into a real rebuild of a set of 50 year old iron heads, you will be spending close to the money needed to buy a new set of aluminums. If you decide to definitely spend the money on the steelies, its only pennies more to machine the guides for lift clearance.

Although it seems the heads have already had the work done to them.  I ran the Lunati 60303 cam (10230703) with .513" of lift on the exhaust valve on AeroHead rebuilt stock heads with no problems.  It was definitely an upgrade over the Engel K-56.

I never bothered to check retainer to guide clearance back then, now I would check before proceeding