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decoding 253 engine prefix

Started by _hatchy1_ , Aug 12 2016 05:05 PM

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13 replies to this topic

#1 _hatchy1_

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Posted 12 August 2016 - 05:05 PM

hi guys hoping someone on forum can help out with decoding my 253 from my ss hatchback on rego papers it states HR56376 but on a letter from holden i recently received it states R056376 im confused as to what the letters actually mean on both the holden letter of authenticity & rego papers as the numbers are the same cheers

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#2 _Skapinad_

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Posted 12 August 2016 - 05:11 PM

0 there because not 6 numbers yet ?

I have no idea, but did see a nos block on Facebook the other day... I would have thought a replacement would be an NR ? This one was NSR ?

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#3 S pack

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Posted 12 August 2016 - 06:09 PM

0 there because not 6 numbers yet ?

I have no idea, but did see a nos block on Facebook the other day... I would have thought a replacement would be an NR ? This one was NSR ?

Correct Adam.

The Holden mainframe required six digits be entered in the data field so if the engine number was only 5 digits long it would have a 0 inserted to complete the data field.

Hence the number stamped on the engine is HR56376 but GMH records show it as R056376.

Edited by S pack, 12 August 2016 - 06:09 PM.

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#4 _hatchy1_

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Posted 12 August 2016 - 07:43 PM

much appreciated fellers thanks for your time and knowledge :driving:

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#5 _Skapinad_

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Posted 12 August 2016 - 07:50 PM

Ang ideas on the NSR Dave ?

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#6 S pack

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Posted 12 August 2016 - 07:56 PM

Ang ideas on the NSR Dave ?

I think you will find it is N5R not NSR.

N5R is the prefix for the GMP&A replacement 4.2 litre Blue motor block & piston kit and short motor.

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#7 S pack

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Posted 12 August 2016 - 11:02 PM

Your LH Torana 253 engine is the 56,376th engine in the H number series. Your engine number tells us that and so does the engine number listed on your letter from GMH.

In reality though it is actually the 55,376th engine as the number series starts at 1,001.

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#8 _Skapinad_

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Posted 12 August 2016 - 11:14 PM

Yep, was a 5. Saved pics at work. Only remember as all the 5's had the banana bend on top.

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#9 _hatchy1_

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Posted 12 August 2016 - 11:45 PM

s pak its actually an LX not LH 253

Also does anyone know what the letter and chassis numbers actually mean as in ALX 001075M CHEERS

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#10 S pack

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Posted 13 August 2016 - 12:27 AM

s pak its actually an LX not LH 253

Also does anyone know what the letter and chassis numbers actually mean as in ALX 001075M CHEERS

LH/LX doesn't matter really they both use the same Torana H series engine number prefix except for ADR 27A automatic cars which use the HQ series Q prefix engine numbers for the 173 and 202.

LX is obvious.

The A is the first ADR year for the LX chassis. The chassis prefix should have changed to B ie BLX when next any ADR rules changed or were added.

001075 = 1,075th LX Chassis and the M= Melbourne (Dandenong Vehicle Assembly Plant)