anyone run 516 heads ?

[USAJon]

did you run big valves..??
them thin steel head gaskets ?
1.6 rocker arms?

thinking of building a set like above ..

 

[Challenger340]

Yep, yep & yep

I'm guessing the "516" is looking attractive to you for a C.R. increase ?

They work Fine, but a low port design similar to the 452 although devoid of the Siamese'd "huber hump" on the side of the port wall like in the 452.

result; Lotsa fuel wash on the plug, best use good Ignition from my experiences

Hope this help
Bob out.