64/65 Rear differential code

[John F.]

Could a rear differential code CZ 7 8 64, ever be in a January 15, 1965 car? I would guess not, but that is what is in my car. More than likely replaced since it has the number matching 365 hp engine/trans. It appears to have a 3.55 R/P in it now.

[Jimmy G.]

Re: 64/65 Rear differential code

Close but within to 6 month time limit so theoritically possible

[Edward J.]

[Jim D.]

Re: 64/65 Rear differential code

Disregarding that it has a 63-64 code and it's 1 week outside the lenient 6 month window, the CZ code is for a 3:08 NON-posi which was not even available with a 365HP engine. Since it's already had the R & P replaced, I'm betting the whole assembly has been replaced at an earlier point in time. For reference, on my 65's, one has the rear dated 12 days before the cars assembly date and the other one is 8 days before.

[John F.]

Re: 64/65 Rear differential code

Thank you for the info guys!