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Crunching Numbers

Started by _hatchasaurus_ , Feb 20 2017 10:55 PM

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#1 _hatchasaurus_

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Posted 20 February 2017 - 10:55 PM

Hey all, being new here I am still feeling my way around this great forum. This topic has probably been raised many times but can anyone tell me what numbers have to match with which tags, obviously I am assuming that the stamped chassis number (r/h front rail) has to match the number on the compliance tag located on the drivers side plenum/firewall area. How about the VIN tag (centre) and the trim tag on the passenger side ? For example my stamped number on the rail matches my compliance plate (drivers side tag) but the VIN tag in the centre does not match either of those 2 locations but it does match the trim plate on the passenger side. Can someone shed some light on this situation for me please? Thanks in advance !

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#2 Bigfella237

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Posted 20 February 2017 - 11:41 PM

G'day Todd,

You're correct with the above, the legal identifier is the stamped chassis number, that's the one that rego authorities / cops / etc. will recognise and should match the Compliance Plate (aka ADR plate).

The VIN on the skinny (centre) plate is purely an internal Holden ID number, it is often (incorrectly) confused with but has nothing whatsoever to do with the 17-digit ISO VIN that replaced the chassis number on later model cars.

The VIN is coded to represent the model and options fitted from the factory and from LH Torana onward, the last six numbers should match the numerals in the "BODY No" on the Body Plate (passenger's side).

Given enough data (some of us have been collecting matching numbers for years), we can tell you whether the chassis number and the VIN are likely from the same car, but as far as I know, no official Holden records exist for the later Torana models so there is no way to categorically cross-reference the two numbers?

Edited by Bigfella237, 20 February 2017 - 11:44 PM.

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#3 _hatchasaurus_

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Posted 21 February 2017 - 02:07 AM

Thanks Andrew, the numbers are exactly what you said mate. I already decoded a little of the info using the vin decoder on torana.com. It told me it was a Dandenong build, SL, 202, M20 but it couldn't decode the GV7 rear axle number for some reason.

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#4 Bigfella237

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Posted 21 February 2017 - 02:52 AM

Pretty sure "GV7" is a 3.55:1 RR AXLE ratio, although that seems kind of a low ratio for a 6 cylinder sedan, it's usually the 4 cylinders that got diffs that low?

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#5 yel327

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Posted 21 February 2017 - 04:55 AM

Agree, odd to find GV7 behind L20 M20 on a 13" wheel car.

The matching of the PSN part of the VIN with the body number on the body tag is a lucky thing for LH-LX owners, a huge amount of the other cars of interest outside Torana don't have that luxury, it is because Dandenong was one of the body and assembly plants that had them matching plus these cars have bodies built at Dandenong and the vehicles were assembled at Dandenong. For example Dandenong vans and cab-chassis don't have them matching as the bodies have Elizabeth body plates.

With enough vehicles recorded you can correlate the LH-LX chassis number to the PSN for most cars, but you need to have 1000's recorded to do it and also have access to HQ-HZ records from Dandenong.

Edited by yel327, 21 February 2017 - 04:57 AM.

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#6 _abstar_

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Posted 21 February 2017 - 06:50 PM

May be worth getting onto Ben at Holden Historical Services, check their website for $90 i got a certificate which tells me my numbers from factory and any factory add ons (air con etc) plus a little history of the sale of my car as it didnt sell through a dealer. Nice little piece of paper to have.

Also got the history of our HJ Monaro which proved invaluable when selling to prove matching numbers for engine etc

[email protected]

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#7 _hatchasaurus_

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Posted 22 February 2017 - 11:10 AM

Sorry guys my mistake, I read the body plate wrong. The rear axle code is GV4.

Thanks Abigail, I might get on to the website and have a look.

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#8 Redslur

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Posted 22 February 2017 - 11:15 AM

3:36 it is then..

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#9 _hatchasaurus_

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Posted 23 February 2017 - 11:31 PM

10-4 Gerry

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#10 yel327

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Posted 24 February 2017 - 07:37 AM

L20, M20 GV4? Sure you haven't got yourself a Gpak? Is it an S or SL?

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#11 _hatchasaurus_

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Posted 26 February 2017 - 01:11 AM

A G'Pack Hatch ? I think not haha, it's an SL Hatch

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#12 _YELLAHATCH_

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Posted 07 August 2017 - 04:37 PM

Hi all,

Just wondering if someone could tell me if all these numbers all match for an LX Hatch - I have always believed it to be a genuine SS Hatch however have never really looked at the body number.

I understand the VIN and the ID plate (LX8VD77) do match and are genuine SS, however I'm not sure how the body number on the ADR plate corresponds to the other two plates, thanks.

Edited by YELLAHATCH, 14 August 2017 - 08:52 PM.

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#13 Redslur

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Posted 07 August 2017 - 04:53 PM

Need a picture of the body options tag to cross reference the tags. Looking like a 5.0L SS by the psn tag :-)

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#14 _YELLAHATCH_

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Posted 07 August 2017 - 05:02 PM

Here is a picture of the ID plate - body options.

Edited by YELLAHATCH, 14 August 2017 - 08:44 PM.

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#15 GML-31

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Posted 07 August 2017 - 06:16 PM

tags don't match... one is 76 one is 77 model

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#16 Redslur

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Posted 07 August 2017 - 07:30 PM

The year model changed Sept of ther year Kev so the tags are actually correct.

Edited by Redslur, 07 August 2017 - 07:39 PM.

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#17 tuxedoss

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Posted 07 August 2017 - 08:22 PM

The G for 1977 is correct on the VIN as pretty sure it was September when the model year changed, but that body number seems a bit high for 9/76, could be wrong but find a 9/76 or 10/76 and compare

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#18 _YELLAHATCH_

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Posted 07 August 2017 - 09:07 PM

Thanks guys for the info, however is there any way I can determine with certainty if all three plates are from the same car.

How do I determine if the body number BLX020790M matches the VIN and ID plates?

By the way I've never posted a photo of the car so here it is:-

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Torana.jpg 89.64K 8 downloads

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#19 Toranamat69

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Posted 07 August 2017 - 09:30 PM

My 10/76 hatch has body number 546721M

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#20 Bigfella237

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Posted 07 August 2017 - 11:34 PM

Sorry to say but that compliance plate has neither ADR9 nor a capital "A" to denote Auto and so most likely (pending "typos") came off a manual transmission vehicle.

Your body plate and VIN tag is from a 308 Trimatic (Auto) SS Hatch but the body number is about six months after the chassis number, it's not an exact science of course as there were delays on the production line etc., but six months gap is a big red flag.

Does it supposedly have the original engine and if so what are the engine numbers and cast dates?

1886-18X is indeed Absinth Yellow with black trim, but the body plate isn't painted body colour and appears to have flecks of another colour on it (possibly Persian Sand)?

Any other indications on the car that it was something else in a previous life?

Either way, that sure is one good looking hatch!