Hi, just new to forum as im about to get my daughters LC Torana ready for the road,i have a ported 161 head with roller rockers and guide plates and was told its a genuine GTR head, can anyone tell by the numbers?it has H in a circle, and on the other end it has 7429477
thanks for any help
identify 161 head
Started by
_nicko61_
, Nov 18 2010 10:34 PM
9 replies to this topic
#2
rodomo
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#3
_nicko61_
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Posted 18 November 2010 - 10:49 PM
thanks, that info cleared it up for me,stock head thats been played with
#4
rodomo
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Posted 18 November 2010 - 10:54 PM
Bummer huh? 
#5
_judgelj_
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Posted 19 November 2010 - 01:32 AM
haha, if thats the case then i got a gtr one right here 
nearly jumped off my seat for a second. got all excited.
nearly jumped off my seat for a second. got all excited.
#6
Dr Terry
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Posted 19 November 2010 - 10:46 AM
Hi Guys.
To my knowledge there was no unique head casting for an LC GTR. Casting number 7429477 is for 161 hi-comp heads used from HR to HK & 7438296 was used from HK to HG/LC. This includes the 161 S, LC GTR motor. Likewise 186 S engines used the same head casting as the stock 186 for HK-HG.
Dr Terry
To my knowledge there was no unique head casting for an LC GTR. Casting number 7429477 is for 161 hi-comp heads used from HR to HK & 7438296 was used from HK to HG/LC. This includes the 161 S, LC GTR motor. Likewise 186 S engines used the same head casting as the stock 186 for HK-HG.
Dr Terry
#7
_nicko61_
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Posted 19 November 2010 - 11:24 AM
does that mean the guy could have been telling the truth?Hi Guys.
To my knowledge there was no unique head casting for an LC GTR. Casting number 7429477 is for 161 hi-comp heads used from HR to HK & 7438296 was used from HK to HG/LC. This includes the 161 S, LC GTR motor. Likewise 186 S engines used the same head casting as the stock 186 for HK-HG.
Dr Terry
#8
Dr Terry
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Posted 21 November 2010 - 03:42 PM
Yes, but he probably thought that the head was used on GTR only.does that mean the guy could have been telling the truth?
Hi Guys.
To my knowledge there was no unique head casting for an LC GTR. Casting number 7429477 is for 161 hi-comp heads used from HR to HK & 7438296 was used from HK to HG/LC. This includes the 161 S, LC GTR motor. Likewise 186 S engines used the same head casting as the stock 186 for HK-HG.
Dr Terry
Dr Terry
#9
_HQ SS_
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Posted 21 November 2010 - 10:24 PM
Hi Dr Terry I must be getting mixed up here as the latest I have for a 7429477 casting number
is E248 24/5/68 so the early HK time frame before the 6cyl Toranas came out.
The earliest I have so far is E246 24/5/66 so right around the start of the HR models.
The date code on the head will give you a better idea of which actual model it was from though.
Cheers Paul.
is E248 24/5/68 so the early HK time frame before the 6cyl Toranas came out.
The earliest I have so far is E246 24/5/66 so right around the start of the HR models.
The date code on the head will give you a better idea of which actual model it was from though.
Cheers Paul.
#10
S pack
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Posted 21 November 2010 - 11:16 PM
Hi Dr Terry,
Haven't you contradicted yourself?
Quote "Casting number 7429477 is for 161 hi-comp heads used from HR to HK, 7438296 was used from HK to HG/LC, this includes the 161 S, LC GTR motor".
From what you advised, an LC GTR 161s head should have a 7438296 casting number, not 7429477.
Cheers
Dave
Haven't you contradicted yourself?
Quote "Casting number 7429477 is for 161 hi-comp heads used from HR to HK, 7438296 was used from HK to HG/LC, this includes the 161 S, LC GTR motor".
From what you advised, an LC GTR 161s head should have a 7438296 casting number, not 7429477.
Cheers
Dave
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