Author Topic: need diff. id  (Read 7444 times)

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need diff. id
« on: August 10, 2008, 05:15:16 PM »
neediff. ID on 2PJ G188 thanks

rich69rs

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Re: need diff. id
« Reply #1 on: August 11, 2008, 05:54:06 AM »
The format you indicate is a little confusing to me.  Should be in the form aa mm dd f s.  Where aa is the axle code, in your case PJ; mm is the month, dd is the day, f is the plant, and s is the shift - either a 1 or a 2 for first or second shift.

Assuming, from your username, we're talking about a '68 -

For either '67 or '68 model year; PJ decodes as 3.73:1 ratio, 12 bolt rear end, positraction  (If this is a '69 axle, PJ decodes as a 2.56:1 ratio, 10 bolt, posi rear end)

G = Detroit Gear and Axle Plant; 1 = 1st shfit

I'll defer to others as to what the 2 at the beginning or the 88 at the end mean.

Also check the CRG axle decoding section at the following:  http://www.camaros.org/drivetrain.shtml#RearAxleNumbers

« Last Edit: August 11, 2008, 06:01:02 AM by rich69rs »
Richard Thomas
1969 RS

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Re: need diff. id
« Reply #2 on: August 11, 2008, 12:41:10 PM »
its in 68 camaro but its two wide found spring tag there for 77 camaro or nova

bertfam

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Re: need diff. id
« Reply #3 on: August 11, 2008, 01:56:34 PM »
Can you verify the "2PJ" again? I don't have a code like that listed. I have 2PU listed, but not 2PJ.

By the way, that format is for a mid to late 70's Nova.

Ed

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Re: need diff. id
« Reply #4 on: August 11, 2008, 02:32:46 PM »
its 2pj 541/2 backing plate to backing plate thanks for all the help

bertfam

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Re: need diff. id
« Reply #5 on: August 11, 2008, 03:00:07 PM »
It must be a later axle than 1979, or from another car. The NOVA SITE only goes to 1979. Is there a casting date on the pumpkin?

Ed

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Re: need diff. id
« Reply #6 on: August 11, 2008, 08:35:23 PM »
more info on rear on pass.side has gm30 on diff housing   driver side #1254333 on housing casting date f 25 9 on pumpkin

bertfam

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Re: need diff. id
« Reply #7 on: August 11, 2008, 08:49:13 PM »
F259 would be June 25th, 1979, so it's not be from a Nova since they show 1979 codes.

After doing a basic Google search, I came up with a 1979 F/B-Body Pontiac 2.41 open.

Ed
« Last Edit: August 11, 2008, 08:54:14 PM by bertfam »

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Re: need diff. id
« Reply #8 on: August 11, 2008, 09:52:39 PM »
thanks for help bertfam