just wondering about the heads i have. what does the cc like in 58cc heads mean? is the higher the number the better or the other way around? mine are 58cc chambers.

 

The cc is talking about the size of the combustion chamber, the smaller the number the more compression, that head can make. Most good factory production heads are 64cc, such as double humps. The size of the combustion chamber should be based on what pistons you have. Example in a street car the compression should be kept under 10:1 with iron heads lets if you're running a dished piston, a 58cc head would put you around 9:1, that same head on a flat top piston will put you up near 10:1

 

There's also a dependence on piston size. The reason 305's run 58cc chambers is because they can't make as much compression with the same piston as a 350 because they have less surface area.

The CC designation is a volumetric measurement of the chamber on the head (I'm pretty sure it's cubic centimeters). You can measure you're own cc's on a head by pouring some water in the chamber and seeing with a measuring cup how much water fit into the chamber (well you get a rough idea this way).

You'll understand the compression points better if you understand the 4 cycle engine and the compression stroke.

 

Well, use anti-freeze or ATF. They don't cause rust

Auggie