When I built my 0.030" over 383 originally I had used Mopar P4349559 gaskets that were said to have a compressed bore diameter of my actual bore size of 4.280". Now I am finding it impossible to find detailed information on head gaskets regarding the compressed bore size.

But I need to remove the heads on this engine (which has not been run), and need new gaskets. The Mopar P4349559 are apparently no longer available.

Unless I am mistaken, the listed bore size is uncompressed, as measured on an unused gasket? I don't have any to check that. If that is correct, then does anyone know how I can find gasket info that will tell me the compressed bore diameter?

Thanks.

 

Usually the bore doesn't change.... Just the thickness...