January 13, 2016 9:02 PM MST
1923 Packard Twin Six Packard built its early valentino shoes success as the standard American luxury car with the fourcylinder Thirty of 19071912 and the mighty Six of 19121915. But the model that really cemented Packard's reputation as a make of the highest rank was the 19161923 Packard Twin Six, which oneupped Cadillac's 1915 V8 with four more cylinders and lasted with relatively few changes for eight years: a remarkably long run.
Classic Cars Image GalleryIn three series between 1916 and 1923, Packard built slightly more than 35,000 Twins, including numerous chassis for custom valentino ballerina bodies. The Twin Six was the chief reason why, when the wealthy ordered a custombodied car, they tended to choose a Packard chassis.
Jesse Vincent, Packard's chief engineer, liked the 12cylinder layout for three reasons: performance, smoothness, and silence. "A sixcylinder motor is theoretically in absolutely perfect balance," he wrote. But a Twelve or "Twin Six," Vincent continued, would provide the same rigidity and smoothness with less piston, crankcase, flywheel, and crankshaft weight and provide more horsepower and torque, to boot. He preferred a V12 to a V8 because a V8 would require a wider frame, larger turning radius, and more complicated steering gear.
The Twin Six engine duly embodied the above principles, with two banks of Lhead cylinders set at a 60degree angle (versus 90 degrees in Cadillac's V8). This allowed accessories to be bolted just below the frame, where they were protected from road hazards, while keeping the valves accessible.
Delivering 85 horsepower at 3,000 rpm, a bore and stroke at 3.00 5.00 inches resulted in valentino shoes online a displacement of 424 cubic inches. Rockers were eliminated, with a separate cam for each valve, and all valves were located inboard of the cylinder blocks. A short, light crankshaft ran in three main bearings.
