YOU'RE ALWAYS GOING TO HAVE A HIGH TEMP WITH A VETTE DUE TO THE SMALL ENGINE COMPARTMENT.. 195-210 IS ABOUT THE BEST IVE EXPERIENCED ON MY 94 HOWEVER IF YOU ARE REALLY WORRIED ABOUT IT TRY A SPRAY COAT OF HEAT SHIELD ON YOUR MANIFOLD AND A LOWER SET TEMP ON THE FAN.. THE SPRAY COATING WONT LAST FOR LONG BUT IT HELPS.