273 Charger Tear Down-Head Gaskets/Valve Seals
The original 273 gaskets were about .026 compressed and not perfectly round but it fit the 273 chambers well. The A measurement is 3.815 and the B measurement is 3.975. If the OP wants the optimum head gasket he should contact Cometic. Really not necessary though with a used engine. I used the MP composite ones (like the Mr. Gasket 1121G's) They worked fine.
The original 273 gaskets were about .026 compressed and not perfectly round but it fit the 273 chambers well. The A measurement is 3.815 and the B measurement is 3.975. If the OP wants the optimum head gasket he should contact Cometic. Really not necessary though with a used engine. I used the MP composite ones (like the Mr. Gasket 1121G's) They worked fine.