61 replies to this topic

[crabba67]

James,Maybe the D is for day shift and A is for afternoon shift example 16H3D,17B3D,my one being 21H2A.

[jd lj]

Sounds like our A or P theory on the big nut master cylinders date stamps.

[jd lj]

James, DA for 2:78/3:08 and i think DJ is 3:36/3:55

Ok, so we have 2809395 DA for a coarse spline std 3:08 housing, how about for the lsd 3:08 coarse spline?

[crabba67]

James,3:08 lsd c/spline WJ 2823983

[S pack]

James,3:08 lsd c/spline WJ 2823983

Hey Anthony, that would be a c/spline 3.08lsd in a baffled diff housing (XU1 rear axle assy) would it not?

What would the rear axle assy code be for a c/spline 3.08lsd in a std diff housing?

[crabba67]

Dave,I am sure it would be that if you ordered a lsd diff it would be baffled.

[S pack]

Dave,I am sure it would be that if you ordered a lsd diff it would be baffled.

Highly doubt it.

[jd lj]

My car was built with a 3:08 lsd, but later fitted with a 3.36 fine spline lsd with baffles and after disassembling it the other day they are definitely not factory baffles. So I believe that the entire diff housing was exchanged in preparation for racing as I have receipts for an entire housing with the centre and axles.
If you got a baffled housing with a lsd from the factory then why would anyone have taken that housing out and then fitted this one with ugly welds on the baffles when they could've just swapped the axles and the centre?

So there should be non baffled lsd housing codes also.

[crabba67]

James,if that is so it was dealer fitted

Attached Files

•  xxxx diff.jpg   185.41K   106 downloads

[jd lj]

Anthony,
My car was a "SVO " and was factory built with the driveline upgrades and due to this my ID plate with the trim details etc also lists all the driveline details, L20, M20 and G93. The VIN disc and the GMH letter also indicate the same details. The GMH letter also indicates the diff as being a 3.08 with lsd upgrade.

The current 3:36 fine spline lsd was fitted probably around 9 years ago by the previous owner.

[jd lj]

Now that I'm at home I've checked the paperwork I have and on the BETSBAC for my car I have a "D" in the axle code and the GMH letter says "Axle: 3.08 :1Banjo type -(G93) with LSD (G80)".

[71Ranger]

Hi Anthony,

 

That is a very detailed doco, what is its origin.

 

Cheers Brian

[crabba67]

Hi Brian,1972 Torana features book,A General,B styling-exterior,C styling-interior,D-specification,E supplement-philppines&korea left drive.

Introduction page The data contained will provide the recipient with a convenient and authentic source of information and will serve as a reference when answering queries relating to our product.              General Motors-Holden's Pty Limited.

                                                                                                              P.W.THORPE Executive Engineer

Cheers 

[71Ranger]

Hi Anth,

My first thought on seeing this doco was wow and my second was do you have one for LC's

Cheers Brian

[grumpy xu1]

Hi Has any one got stencils made up of the diff codes for 72 xu1.

[grumpy xu1]

Hi everyone, i should ask if anyone has any photos of any stencils or check marks used throughout lc/lj ? Any photos ect appreciated thanks Gary.

[jd lj]

Does anyone else have a green paint marking on the back of the passenger side bump stop mount? It looks to be a quality control /inspection passed type of thing.
It's probably not visible until you clean off 40 years worth of grime.

[crabba67]

James,There is a number of inspection marks on the diff and housing.With the G80 diff option i am sure that it would be a baffled diff housing what do you think?I would say that most would be optioned on or after the 7 month 1973. 

[crabba67]

The next sheet on options G80 S,SL,GTR

Attached Files

•  lj features.jpg   101.44K   97 downloads

[jd lj]

James,There is a number of inspection marks on the diff and housing.With the G80 diff option i am sure that it would be a baffled diff housing what do you think?I would say that most would be optioned on or after the 7 month 1973. 

Anthony, would you care to elaborate on the inspection marks as I would like to replicate them whenever possible.
There's also a 34 stamped on the passenger side of the housing.

[crabba67]

Hi Gary,With the diff housing stencil, Gary i would try a craft shop or hobby shop and ask for military font cards in the correct size.

cheers

[jd lj]

Or make your own stencils using the photos in this thread as your template.

[jd lj]

I'd assume that code relates to 6/13/73 as the production date. That code would be the one stamped on the front passenger side of the diff housing next to where the centre bolts in.

That code will have no relevance to the ratio or the axles. There would have been an code painted on the other side of the housing next to the diff centre, as shown in the photos earlier in this thread.

[S pack]

I'd assume that code relates to 6/13/73 as the production date. That code would be the one stamped on the front passenger side of the diff housing next to where the centre bolts in.

That code will have no relevance to the ratio or the axles. There would have been an code painted on the other side of the housing next to the diff centre, as shown in the photos earlier in this thread.

James, did you mean 6L3 = 6th November 1973?

Mick, if that date code is correct then that diff housing is too late to be a factory fitted XU1 housing.

If it was a spare part diff housing then it could be anything you want it to be.

Edited by S pack, 07 October 2015 - 06:10 PM.