What engine can bolt up to a push button auto Tranny

Youll need a V8 push button trans for sure as it has a different valve body than even a console cable trans from the same era. Youll also need a convertor snout bushing if you want to put a 360 onto a early transmission, prior to 68 as the cranks are drilled for a larger convertor snout. You can put an early 273 crank into a 318/340 if you get it balanced as it will have the small pilot for the matching convertor,