1963 Dodge Dart 270 Convertible for the Wife

I think it's the same deal as a 273 engine. The register in the end of the crank and the converter has to match. The register in the crank on the older motors is smaller. The old converter will work with the newer crank....even though just using it too loose is wrong also. Older motor won't fit with a newer converter because the crank register is too small. You can either use an adapter ring in the register of the 225 to fit the smaller hub on the old converter, or get the old converter rebuilt with the proper hub added to the front of it.