Originally Posted By 65signet
They are a 8mm stem or 5/16 stem, ferrea makes the valves, and comp makes a 1.81 installed height beehive spring, for a standard valve spring pocket, i run them on stock 318 heads.


Yes, what 65signet said. I have used the same valve and a Comp 26995 spring at 1.81" IH on both an Indy RHS head and an EQ head.

Last edited by cudadoug; 03/31/17 12:49 PM.