Author Topic: ring and pinion date code  (Read 521 times)

janobyte

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ring and pinion date code
« on: July 06, 2014, 01:23:13 AM »
Where are the date codes located ? End of the part number ? eg: 2 68 ? 

ZLP955

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Re: ring and pinion date code
« Reply #1 on: July 06, 2014, 03:45:51 AM »
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:
Tim - 04A VN '69 z/28 69-69 715 ex-E/MP

janobyte

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Re: ring and pinion date code
« Reply #2 on: July 06, 2014, 04:07:35 AM »
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.

bcmiller

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Re: ring and pinion date code
« Reply #3 on: July 06, 2014, 04:31:55 AM »
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.
« Last Edit: July 06, 2014, 01:18:30 PM by bcmiller »
1968 Camaro SS 396 - now 468 BBC, M21, 12 bolt.
Looking for 68 Camaro with body number NOR 181016
Bryon

janobyte

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Re: ring and pinion date code
« Reply #4 on: July 06, 2014, 11:57:53 AM »
thanks

bcmiller

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Re: ring and pinion date code
« Reply #5 on: July 06, 2014, 01:02:22 PM »
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.   :)
« Last Edit: July 06, 2014, 01:19:23 PM by bcmiller »