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"P" CASE - rear end, posi GM casting #3743833 / CALL FOR DATES AVAILABLE - USED STARTING IN APRIL 1957
 (click to view larger image) | CHEVROLET BEGAN PRODUCTION OF POSI-TRACTION REAR ENDS IN DECEMBER 1956 . DECEMBER CASES HAVE THE CASTING NUMBER 3743833 AND A "O" ON THE LH CURVED SIDE OF THE REAR END HOUSING. FROM JANUARY 1957 THRU MARCH 1957 CHEVROLET INSERTED A "X" BY THE CASTING NUMBER 3743833 TO DENOTE POSI-TRACTION. IN APRIL CHEVROLET ADOPTED THE USE OF THE LARGE "P" BY THE CASTING NUMBER 3743833 TO SIGNIFY POSI-TRACTION AND IT WAS USED THRU THE END OF THE PRODUCTION YEAR. Part Number: A7290 For Corvette years: 57 Price: $1295.00 |