Long water pump for chevy 283, 327,350 small block engines. High volume aluminum water pump. Block to hub measurement is 6 15/16. Large 3/4" bearing with 5/8" shaft.
Bigger pump impeller & Larger cavity size. This PumpUses The 5/8 Keyed Shaft For The Pulley. 1 Wire GM 140 Amp Chrome Alternator.
Fit For 1969-87 small block chevy, 1973-89 light duty trucks. Including All Items in the picture. Professional Installation Is Highly Recommended (No Instruction Included).