Author Topic: What do these numbers mean?  (Read 4375 times)

sixt9x33rs

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What do these numbers mean?
« on: August 09, 2010, 02:35:35 AM »
I saw these numbers on the back of a small block with the bellhousing removed. They were above the crank:

678636 386371 H35
371386

The H35 is not a casting date. The casting date was in the normal location.

Thanks
'69 RS Z/28 65B, 711 Flat hood no spoiler, endura, 4:10 43K miles
69 X77 Z/28 69 69 711 Original Paint Unrestored (Sold)
'69 X66 Convertible 69B 712 auto, (Sold) 44K miles

JohnZ

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Re: What do these numbers mean?
« Reply #1 on: August 09, 2010, 04:42:52 PM »
Those are foundry identifiers for the various patterns and cores used to form the sand mold for the block; they're unrelated to the final assembled configuration of the engine.
'69 Z/28
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sixt9x33rs

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Re: What do these numbers mean?
« Reply #2 on: August 11, 2010, 11:29:09 AM »
Thanks John.

Were you in Charlotte for the National Convention?
'69 RS Z/28 65B, 711 Flat hood no spoiler, endura, 4:10 43K miles
69 X77 Z/28 69 69 711 Original Paint Unrestored (Sold)
'69 X66 Convertible 69B 712 auto, (Sold) 44K miles

JohnZ

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Re: What do these numbers mean?
« Reply #3 on: August 11, 2010, 02:07:13 PM »
Thanks John.

Were you in Charlotte for the National Convention?

Yes, I was - great convention! My Michigan Chapter is hosting the National next July.
'69 Z/28
Fathom Green
CRG

 

anything