Where are the date codes located ? End of the part number ? eg: 2 68 ?
Not sure on pinions, but the ring gear usually has part number, ratio (xx yy), and date code (m/mm, yy).
Here's an example from chevellestuff.net:
(http://chevellestuff.net/qd/rearcast/3862526_10_41.jpg)
mine are coming out (ring gear) 10 41 2 68 ,I know they are the gears the car shipped with ,just trying to break the code, assuming should coincide with rear end housing build date.
pinion stampings are pronounced I see what can be interpreted as 4:10 and 68, not sure of the month and digit order as it relates to.
Pretty cool ,still have the box the 4:88's came in 69 (Milad's) when #2 owner ordered them...4:10's have been in it ever since.
Quote from: janobyte on July 05, 2014, 11:07:35 PM
mine are coming out (ring gear) 10 41 2 68 ,I know they are the gears the car shipped with ,just trying to break the code, assuming should coincide with rear end housing build date.
pinion stampings are pronounced I see what can be interpreted as 4:10 and 68, not sure of the month and digit order as it relates to.
Pretty cool ,still have the box the 4:88's came in 69 (Milad's) when #2 owner ordered them...4:10's have been in it ever since.
Your ring gear is dated February of 1968.
On pinions, sometimes the month is a bit off from the year. See this attached example. 1 69 on this one.
thanks
And here is another pinion that was paired with a 3 of 69 ring gear. Honestly I am not sure if this pinion is dated 2 of 69 or 4 of 69.
Dates on the ring gear are normally very easy to determine. :)