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| | |-+  L78 engine code help
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Author Topic: L78 engine code help  (Read 2735 times)
birdman
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« on: April 21, 2006, 12:02:55 AM »

I have a late build date of 09E (sept 69)  X22 4-speed camaro that is missing the original block. I found a 3969854 4 bolt dated H 31 9, the block has beed decked clean. The heads are 3964291 square ports dated I 10 9 & I 12 9. Does any one know if the late built camaros use the JH code disginating a 396 CI or did they change over to the 402 CI with a C - - code.
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JohnZ
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« Reply #1 on: April 21, 2006, 09:57:28 AM »

Page 139 of Jerry's book indicates that many late 854 blocks (402's) used the "C" prefix ahead of the usual two-character suffix.
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'69 Z/28
Fathom Green
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KurtS
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« Reply #2 on: April 24, 2006, 02:03:43 AM »

That might be in Jerry's book, but Camaro continued using the 2 digit code from what I've seen. I've only heard of one or two exceptions and have not seen pics of those pads.....
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Kurt S
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birdman
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« Reply #3 on: April 27, 2006, 09:56:35 PM »

Being that late in the year and the fact that Chevelles & Nova,s were being produced for the 1970 model year would they have changed over to code CKO which  I believe is correct for 1970 396/375 HP ??
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RickH
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« Reply #4 on: April 30, 2006, 04:19:52 PM »

1969 Camaro never used the three letter engine designation.

Rick H.
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