Dating Red Engine

[John T.]

I have a Holden 161 engine #161 H432240 and am trying to determine the date, or at least the year of manufacture. Can anyone help me with this?

Thx

[Dr Terry]

That engine number puts it roughly 1/3 the way thru HG production, so Oct/Nov 1970 is my guess.

The block itself will also have a casting date code on the side of the block near the oil filter.

Find that number & post it here, so we can decipher it for you.

Dr Terry

[John T.]

That engine number puts it roughly 1/3 the way thru HG production, so Oct/Nov 1970 is my guess.

The block itself will also have a casting date code on the side of the block near the oil filter.

Find that number & post it here, so we can decipher it for you.

Dr Terry

Just found the casting date: M220. Thanks.

[Dr Terry]

Just found the casting date: M220. Thanks.

I think that deciphers to 22 Dec 1970.

I was probably fitted to an HG which went down the assembly line in Jan/Feb 1971.

Dr Terry

[Big Rob]

LC Torana or HG.

[Dr Terry]

LC Torana or HG.

No, the 161H prefix indicates HK/T/G.

If it was an LC 161, the prefix would be 2600H.

Dr Terry

[John T.]

Thanks for the information - it is amazing how much Holden knowledge and enthusiasm is out there!

John T.

[Big Rob]

No, the 161H prefix indicates HK/T/G.

If it was an LC 161, the prefix would be 2600H.

Dr Terry

Yep, you're right. I was forgetting that.