The Packard Model 633 was their mid-priced car and positioned to compete with Cadillac's very successful LaSalle brand. The Model 633 rode on a 133 inch wheelbase and was powered by a 319 cubic-inch straight eight engine producing 90 horsepower. This new engine used a unique crankshaft design and firing order that balanced the reciprocating forces, thus eliminating vibration. It was lighter than the V12, offered more horsepower, had better fuel economy and the its inline configuration allowed the Packard to continue the 'long hood' design themes that were popular and characteristic of the Classic era.
credit : conceptcarz
