1968 Z/28 GM PART NUMBER MUNCIE ID TAG

[john302]

WHAT IS THE GM PART NUMBER ON THE LITTLE METAL TRANS TAG FOR 68 Z/28  WITH A M20 TRANS?  ALSO WHAT IS IT FOR A 68Z WITH A M21 ?   THE ASSEMBLY MANUAL SHOWS THE PART NUMBERS ,BUT IT IS CONFUSING.  ANY HELP OUT THERE? 

[bertfam]

John, there are a few different applications dependent on the rear axle ratio and with or without posi. What ratio are you looking at?

Ed

[john302]

THE RATIOS ARE BU 373 POSI AND BV 410 POSI.  1968 Z/28

[john302]

WHAT WOULD THE PART NUMBERS BE FOR A 373 POSI M20 AND 373 POSI M21 AND ALSO A 410 POSI M20 AND M21 ? THANKS JOHN

[bertfam]

The M20 would be 3915079 for both the 3.73 and the 4.10

The M21 would be 3915085 for both the 3.73 and the 4.10

Ed