great thread guys I learned a lot found out that mine is l24 013529 and matches my VIN HLS30 10068 on the strut tower stamp...this makes me happy since for some reason I thought it may have been Frankensteined since the valve cover is not one of the earlier ones that the OP mentioned with ohc 2400 on it

More data to use in next update:

1970 240Z 901 white / blue int, VIN HLS30-03435, matching engine L24 006302, E31 0321A, E31 Head, NISSAN 2400 OHC cover, build 4/70.

It appears that block is 1970 Mar 21 A (????)

Wally

Could No Longer EDIT the list at Post #75 - so had to recreate it here with the update.

FWIW,

Carl B.

= = = = = = = =

To Recap what we have so far in this thread..and update as we proceed...

<pre>

L24 107 E31 92124 FSM

L24-2130 E31 9828G 10/69 HLS30-00032 Mike B

L24-2396 E31 9901D 11/69 HLS30-00210 Mike B

L24-2465 E31 9901F HLS30 00215 mdbrandy

L24-2585 E31 9X04C 11/69 HLS30-00331 Mike B

L24-3260 E31 9901A 12/69 HLS30-00587 Carl B

L24 3199 E31 9628A 01/70 HLS30-01366 Johnny'O

L24-3652 E31 9X04F 01/70 HLS30-01590 Mike B

L24-4375 E31 9Y01A 02/70 HLS30-01704 JonnyRock

L24-004621 E31 0126C 01/70 ???? BonziLon

L24-005562 E31 02121 03/70 HLS30-02156 Kats

L24-005757 E31 0327B 04/70 HLS30-02725 ol'red70

L24-05778 E31 0320A 04/70 abas

L24-006302 E31 0321A 04/70 HLS30-03435 WDILL

L24 010878 E31 0660K 07/70 HLS30-07715 Napa Bill

L24-011821 08/70 HLS30-08323 daddz

L24-026313 P30 1109A 01/71 HLS30-19867 zztom

L24-027116 P30 1616L 01/71 HLS30-20419 AZ-240z

L24 O27310 P30 01/71 HLS30-20390 deadflo

L24-032875 P30 03/71 HLS30 25734 lonetreesteve

L24-039190 P30 1408a 05/71 HLS30-31306 mlc240Z

L24-123315 08/72 HLS30-98122 ChrisA

</pre>

FWIW

Carl B.

Edited November 19, 201014 yr by Carl Beck
add Johnny'O

Mine is

L24 013529 E31 09/70 VIN HLS30 10068 KAL7467 not sure where I get that other number that I am missing.

KAL7467

See Post #27 - Kats expressed an interest in the engine block casting codes. That is how the list I Posted got started.

Kats shows a picture of the block casting codes - and that seems to be the number you are missing.

FWIW,

Carl B.

Hi Carl,

Thank you for "recap" , that is very useful.

kats

Here is mine:

L24 03199 E31 01/70 VIN HLS30-01366 9628A

Does this date code translate to June 28 1969?

9628A

Does this date code translate to June 28 1969?

It would appear so. That's interesting.

-Mike

Added Johnny'O at Post #87

Carl B.

Yes, it is interesting ,Johnny'O your 240Z would have a very old block , assembled late 1969.

Who has "9618@" , 18th Jun 1969 is my birthday.I want to see it.

kats

Yes, after sifting through this thread I was surprised to see that early of a block date also.

My block serial number is also low compared to others that were "built" in 01/70. Maybe mine was pulled off the line for one reason or another.

I've dropped this info into a spreadsheet for anyone interested. I was thinking that maybe we could add it as a tab to MikeW's online spreadsheet.

Block Date Codes.xls