what heads to run on a 273
If you want to work with your 273 heads, they respond to a bit of clean up and porting. I had my original heads done and they turned out good. You can see them by clicking on the link below. I will say the 302 castings are a better head without modifications than the stockers. Make sure you use a thinner head gasket so you don't loose compression. I don't have that info handy but I think I mentioned it in my thread. Cometic multi layer steel gaskets are the best and If I were to do it over I would have some made. Keep us posted on your progress. toolmanmike
Here's my stock heads after a little clean up.