273 Intake Valve Size

[A/MP]

What's the largest intake valve that can fit into a .030 over 273? I do not want to notch the cylinder. Thanks

 

[66fs]

If you are carefull and don't have too big of a cam, Lift. I'd say 1.88 IN and 1.60 Ex. I'd also mock it up and check it to be sure.

 

[Rob R]

I'm building one as we speak...1.920 is the largest that I'd go.
I put 1.88's and 1.60's in a set of 920 castings.