Caballero

History
In 1971, GMC began producing the Sprint, their version of the Chevrolet El Camino. The chassis was based on the Chevrolet Chevelle station wagon/4-door sedan wheelbase. Sprint's first year was also the first year for mandated lower-octane unleaded fuel which necessitated a reduction in engine compression, and GM's A.I.R. system, a "smog pump", was added to control tailpipe emissions. Power and performance suffered. 1972 was the last year for the third generation El Camino, resulting in a two year generation for Sprint. For 1972 little changed but still lower power outputs. Engine offerings for 1971-72 included the 250-6, small block V8s of 307 and 350 cubic inches; and big block V8s of 402 and 454 cubic-inch displacements. Horsepower ratings of those engines for 1971 ranged from 145 for the six to 365 for the 454 - all in gross figures. For 1972, horsepower measurements were switched to the "net" figures as installed in a vehicle with all accessories and emission controlles hooked up - this change brought the horsepower ratings for 1972 down to a range from 110 horsepower (82 kW) for the six to 270 for the 454 V8. The Sprint shared exterior and interior trims with the Chevelle Malibu and El Camino including cloth and vinyl or all-vinyl bench seats and deep twist carpeting. All-vinyl Strato bucket seats and center console were optional.
The Sprint has the same design, features and equipment as the El Camino with some renamed. It was offered as "Standard" or "Custom". The inline six was only available on the "Standard".