What size bore?

[stephen4785]

I need to get some piston rings for my 289 .030.What size piston rings do i need to get.Are the rings the 1/16?And what size bore do I have?

 

[ashford]

same rings as 302 bored 30 over

 

[DblAdigger]

Rings.

Measure the groves in the new pistons. That way, along with the 4.030 bore size, you can get the right ones. They are, most likely, 5/64, 5/64,3/16. Could also be 1/16, 1/16, 3/16. OR, take a piston with when you go to the parts house AND check the fit right there.