assembly line 3862527,3862515 4.56 ring&pinion
 

Very good condition mid 1966 GM 4.56 ring and pinion, ( likely out of AQ 4.56 l79 vette rear from what I remember ), PREDATES 67 L78&Z28. This was also available for 66 Chevelle & Biscayne ect. 500.00 OB +ship pp friends&family. Condition is very good, bearing diameters on pinion are tight. Can send more pics for those interested . Thanks Marc.