I always thought that too, a left and a right. Part # 2808843 is listed in the HK, HT and HG parts catalogues as the salisbury rear axle and 2 for each vehicle, no left or right. But in the 327 supplement to the original HK catalogue the part # 7437374 is listed as the part # for the 327. axles What is the difference in these axles ?

Someone on here must know, but as you say the plot thickens. I sort of hope there is a left and right because listen to this. Somewhere in the mid 1970s I broke an axle in a HK 307 auto salisbury diff premier and I was with a lady friend a long way from home, middle of winter and middle of the night , I spent a day waiting for the local wrecker to get me a replacement axle he said he only had one to suit the other side and would take a day to get me one which he eventually did. Now if there is left and right thats fine ,but if left and right are the same he did have an axle to suit the premier, well that would be very disappointing. because after I spent all that time getting that axle back in I was now running very late for the girl and I to get to a good mates wedding, well we did'nt get to the wedding for in the mad rush to get there I rolled the car, total wreck. No it has'nt finished yet. I had only bought the car in the last week and the car salesman who sold me the car did'nt fill out properly the cover note for the insurance when I bought the car. No it has'nt finished yet. despite all efforts to get his company to cover the loss, no way. So that beautiful wrecked car sat in the driveway for the next 2 years till I had it paid off. All for a broken axle.....so maybe now I'm not real sure if I really want to know if there is a left and right or not. One way or another these are the experiences that make life so interesting.....Jack

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Originally posted by blameyone
I always thought that too, a left and a right. Part # 2808843 is listed in the HK, HT and HG parts catalogues as the salisbury rear axle and 2 for each vehicle, no left or right. But in the 327 supplement to the original HK catalogue the part # 7437374 is listed as the part # for the 327. axles What is the difference in these axles ?

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They maybe on about the 12 bolt HK HT Monaro diff with the low ratio's

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Originally posted by castellan
I recon it's bull.
And the 307 auto HK premier had a banjo diff 2.78 ratio.

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As standard, but it also had a 186 3spd as standard fitment. Like the 307 engine the HK Prem was optionable with Salisbury rear axle.

They may have, although I thought 2.78 banjo was standard and 3.08 or 3.36 Salisbury were optional. Either way you could get a Salisbury. 186 was standard and 307 could be optioned on HK Premier, therefore any diff other than 6cyl banjo is an option, regardless of whether it was standard with 307 or not. I think that prior to Monaro release all 307 HK were 2.78 LSD banjo anyway.

Edited by user Saturday, 19 February 2011 2:02:00 AM(UTC)  | Reason: Not specified

Thanks Squeak327. Yes, as it happens I was speaking to bloke at southern differentials this arvo and he expressed a similiar caution about switching sides with the axles. What this really means is there is no left and right but there is axles that have been used on the left and others that have been used on the right and should continue to be used as such....all the best regards ...Jack

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Originally posted by blameyone
Back again, seems axles aint axles. Still have'nt found what all the numbers and letters are cast into the axles. Is there a possibility they are date cast numbers? and what of the two different part #s....Jack

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Greetings, I think you will find that the reason for the different part numbers is because HT had a thicker wheel flange and longer wheel studs as part of the upgrade from HK to HT. The wheel bearings also changed at this time. The cast numbers/codes are for production batch identification purposes as the axle shafs for these imported rear ends were cast at Holden.

Very nice reasoning on why an axle should only ever turn in one direction by Squeak327.

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Originally posted by blameyone
I always thought that too, a left and a right. Part # 2808843 is listed in the HK, HT and HG parts catalogues as the salisbury rear axle and 2 for each vehicle, no left or right. But in the 327 supplement to the original HK catalogue the part # 7437374 is listed as the part # for the 327. axles What is the difference in these axles ?

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74xxxxx is a HK part number and 28xxxxx is a HT/G part number. What is in the parts catalogues is not a record of what was fitted to vehicles, but a means for 2nd hand vehicles to be serviced by GMH dealers at a later date. Obviously something changed with the HT/G axles (git answered that for you if the info is correct, I have no knowledge of this) and then these became spares for HK as well as HT/G. I'll bet you got the 28xxxxx number for HK from the blue 1972 catalogue?

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Originally posted by blameyone
I've just found, The axles, according to Allan Colvins' "chevrolet by the numbers" publication, 10 bolt L and R diff axle shafts are the same length. There are many different lengths Salisbury axle shafts but for each application L and R are same.
...Jack

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I think that it is more than likely that the HK/T/G axles were Australian made. They are uniquely Holden, because they have an unusually large flange offset to suit the Holden rear brakes & the Holden rear bearing. Neither of these are items are seen on any GM US vehicle. The stud pattern is also uniquely Holden.

Dr Terry

GMH also "made" the housings from what I have heard lately.