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L34 Head Identification

Started by _Yella-5000_ , Jan 17 2007 09:35 PM

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16 replies to this topic

#1 _Yella SLuR_

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Posted 17 January 2007 - 09:35 PM

Thanks to Mark, I got the numbers off the head. The part number is cast into the head, right in the middle of the valve train top, perpendicular to the head.

It should be noted that a great number of heads were and have been fitted with L34 sized valves, but that alone does not make them L34 heads.

Here are the relevant part numbers to help you identify what heads you have:-

2812173 - LH 5.0L Head Assembly
2812174 - Replacement LH 5.0L Head

9836122 - LX pollution 5.0L head Assembly ??? (Not confirmed)

9936482 - L34 5.0L Head Assembly
9936382 - Replacement L34 5.0L Head

Hope that helps.

Edited by Yella SLuR, 17 January 2007 - 09:36 PM.

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#2 REDA9X

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Posted 17 January 2007 - 09:44 PM

Just asking the question here because I seem to remember this coming up in the past ( i have some heads in the shed I should look) but Is the number in the book whats cast in the head? I don't think it is is it? Been a while since I looked.

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#3 _JBM_

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Posted 17 January 2007 - 10:17 PM

9936482 - L34 5.0L Head Assembly
9936382 - Replacement L34 5.0L Head

In the parts supplement 9936482 is the "HEAD COMPLETE" and 9936382 is "HEAD"

I would therefore assume that 9936382 is the part no cast into the head itself.

It also lists part no for the valves and the needle roller bearing rocker arm pivot parts.

James

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#4 _Yella SLuR_

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Posted 17 January 2007 - 10:19 PM

Yup, I've confirmed that the head I have is in fact not an L34 head, but a replacement 308 head with big valves fitted. Numbers are cast into the middle of the top of the head. Numbers are from the book, LX number is from another set of pollution heads in the shed, again with big valves, that were sold with the suspect head.

I had to find out, as I don't want to be selling things that aren't the real deal.

Edited by Yella SLuR, 17 January 2007 - 10:32 PM.

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#5 _MRNOS_

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Posted 19 January 2007 - 09:52 AM

Any ideas what these are-Head 9936122, intake -9945668

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#6 TerrA LX

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Posted 19 January 2007 - 10:34 AM

Any ideas what these are-Head 9936122, intake -9945668

heads are VB red

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#7 _Yella SLuR_

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Posted 20 January 2007 - 08:13 AM

Any ideas what these are-Head 9936122, intake -9945668

LX pollution heads. Numbers are hard to read, mine ^ up there probably should be 99, not 98. Mods can you edit for me please?

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#8 77_LX_HATCH

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Posted 02 February 2008 - 01:33 PM

Hi guys, just lookin at these heads supposedly off a 253 commodore engine, the # is 9936122 on both of em.

Struck my attention as they both have the 'x-cast; in the head.

The heads have standard valves and a pretty bog stock.

So i'm pretty sure the 'x' is nothing special. Unless this has already been clarified?

Cheers

Mike

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#9 WhiteA9XS

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Posted 28 May 2008 - 10:38 PM

ok , so 9936482 is the number cast into head for the origional heads ?

Edited by 830hp, 28 May 2008 - 10:44 PM.

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#10 _chrome yella_

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Posted 29 May 2008 - 11:20 AM

i have checked 4 geniune l34 motors in my time and they all had 2812174 heads on them, with all l34 gear intact. 2 of these motors had never been apart. now for the interesting bit, i was in the melb motor book shop a while back and this old bloke said he worked at gmh motor division around 1970's and was talking about stuff-ups . he said gmh sent 1000 heads to dave bennet to be modified for l34's but they sent the wrong drawings, and the whole lot were scrapped. and another batch were done. possibly these were the 9936482 heads? Has anyone definetly seen 9936482 heads on a l34 or anything else. if not i beleive that this would be the truth. perhaps head numbers were allready printed in records before blunder. so if everyone with a l34 or a good understanding of one could reply to this, i think it could be interesting.

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#11 yel327

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Posted 29 May 2008 - 02:26 PM

I might be wrong (and someone please point out if I am), but I though L34 heads were just standard heads modified by Dave Bennett, hence they will just have the same casting number. Same thing with inlet manifolds? They should have different part numbers, but the same casting number as stock stuff?

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#12 _Toranamuk_

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Posted 29 May 2008 - 09:25 PM

Just checked my L34 heads & they are 2812174.

Craig

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#13 _ohhgeee_

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Posted 08 September 2013 - 01:25 PM

i just checked my heads after reading this thread and found my heads to have 2812174 numbers on them but was sworn they are l34 heads when i purchased my engine from a pretty switched on bloke...
are these numbers definate?
how else can i check what spec they are without ripping them off the block?

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#14 _Quagmire_

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Posted 08 September 2013 - 01:54 PM

l34 will have modified stock rockers or crane roller rockers(ho versions) tmk

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#15 _ohhgeee_

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Posted 08 September 2013 - 11:03 PM

i dont have rollers and by modified stock rockers what exactly am i looking for?

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#16 YELLAcakeu308

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Posted 14 September 2013 - 11:26 AM

?

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#17 _johnlh_

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Posted 11 November 2015 - 11:36 AM

Yup, I've confirmed that the head I have is in fact not an L34 head, but a replacement 308 head with big valves fitted. Numbers are cast into the middle of the top of the head. Numbers are from the book, LX number is from another set of pollution heads in the shed, again with big valves, that were sold with the suspect head.

I had to find out, as I don't want to be selling things that aren't the real deal.

I have an L34 it is the original motor complete with car confirmed by holden historical. The heads have the LH replacement number on them. Seems to me that this is what they would do get replacement heads l34 them then replace the existing or just add to the motor.