I have a 305 H.O. engine from a 1983 Chevy Camaro and I was wondering what the head casting number was.. or the possiblities if there was more then one. I don't have the time to search the internet right now and I was hoping someone had some quick facts about it. And also, please no smartass remarks about how I could look for it myself.. if I had it in front of me I could, but I don't. Anyways, maybe someone could help with this.. and if they know the spring pressures that came stock and any other info.. that would be great!

 

The last 3 digits of the casting # should be 416.

They're pretty decent heads. Respond well to porting and 1.94" intake valves.

Valve spring specs are lame. Figure on replacing them.

 

Actually its more likely to be 601