We have Edelbrock 8881 Victor Series Mechanical Water Pump with Product Detail 5/8 pilot shaft, long style, reverse rotation water pump This does not fit LT1 or Vettes The dimension from block surface to hub is 6-15/16, and its inlet diameter is 1.80 Provide maximum cooling for the street and the racetrack and are ideal to prevent overheating in street rods and street machines, as well as in tow rigs and motor homes Features include heavy-duty roller bearing assemblies built to withstand higher torsional loads, billet steel hubs, and leak-proof seals . The "Edelbrock 8881 Victor Series Mechanical Water Pump" is best product for you. We recommended Edelbrock 8881 Victor Series Mechanical Water Pump