HEATER BLOWER MOTOR63-77(early '77) All +77-79 w/o AC fits all 1963-early 1977.Also fits 77-79 without air cond.1977 owners: The center shaft is 1-3/16" long on this early design. The raised area around the shaft is 3-1/4" in diameter & 11/16" deep (where the motor fits into the fan/cage.See HAC615 for the 2nd design motor MakeCHEV ModelCORVETTE Year1963-1977 Item#HAC614 Instructions / Core Return FormClick Here Price$29.95EACH Core Charge$0.00 QtyAdd