Small block and auto trans for my 66 Barracuda in Phoenix

pishta is right kevin. if you can save the 273 you would be better off. this is a matter of opinion but the 273 is a lighter engine. it is more correct for your car. they often have mechanical cams and lifters and are capable of high rpm or good daily drivers. I have 8 of them in running barracudas one of which is a 1966 formula s. if you do decide to not use the 273 I would still like to trade or buy your seized one. good luck