I have a 1972 Delta 88 convertible that has the 12 Bolt O style rear in it. It has a Posi carrier in it casting # 761 with 2.73 gears on it. Does anyone know specifically which ring and pinion ratios will fit on this carrier?
Thanks
Roy

 

The big car Type O uses a unique 9.3" ring gear. NO ONE sells new gear sets for these and nothing else fits. The factory made gears in ratios up to 3.42:1, but good luck finding used ones today.

 

Thanks Joe, I am aware of that.
Roy

 

Sorry, I misread your original post. The parts book shows that your 9.3" Type O anti-spin carrier is the same P/N for all available ratios - 2.73, 3.08, 3.23, and 3.42.

 

Perfect. Thank you sir.
Roy