Dana engineering-approved for fit, form and function. Part Type: Engine Water Pump Gasket. 1974 GMC C35/C3500 Pickup Engine: 7.4L V8; To Block;. 1968 GMC C35/C3500 Pickup Engine: 6.5L V8; To Block;. 1969 GMC C35/C3500 Pickup Engine: 6.5L V8; To Block;.