9" axle details

"N Case without the N" date code is 7M20 = 1967, December 20 Owner Cast metal part with visible casting numbers 7M200 and other unidentifiable markings. AI caption A close-up view of a cast iron component shows stamped identification marks and manufacturing marks. AI caption Daytona pinion carrier C5AW-C Owner A close-up view of a cast iron component with visible casting numbers, likely from an engine assembly. AI caption Close-up of a differential housing and gears, with a box for Fel-Pro gaskets visible in the background. AI caption Differential carrier housing and yoke assembly, likely for a rear axle. AI caption 3.50:1 Detroit Locker - this car originally had an open 3.50 :1 differential. The DL was not available until 1970 but it is far superior to… Owner Casting number of the main case is C4AW-B Owner This differential ring gear shows wear patterns from the yellow marking compound. AI caption Proper mesh pattern shows up on lead paste Owner Undercarriage view of a 1968 Mercury Cougar showing the rear axle and exhaust. AI caption Long wide pinion yoke. All 1968 390 and 427 applications used driveshaft P/N C8WY-4602-B with C6 automatic transmissions. The shaft is 3&qu… Owner Close-up of a vehicle's driveshaft U-joint and differential housing, with a tape measure for scale. AI caption