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Discussion Starter · #1 ·
i was cleaning up the engine compartment in the wagon today getting ready for the wiring and i noticed a tag on the side of the block..
a rebuilt spec tag.40 overbore, .10 mains .10 rods
the engine looks to be sprayed orange but after cleaning off the tag its blue under the orange...
what year did they start painting them blue?
this leads me to believe it may be a 230 or 250 not a 194
how do i tell the difference?
where can i find a listing of casting numbers?
as always thanks guys
craig
 

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I think they switched to blue in the mid to late 70s. Is it one peice head and intake or does the intake unbolt seperate? If intake dosn't un bolt its what they call intragrated head and you will want to change it out to the old style head. The intragrated setup is known for blowing head gaskets. I think chilton manuals have some of the pad stamp codes but i'm not positive.
 

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'67 4 door, 65 wagon. WISCONSIN
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thanks for the link ...
where are these numbers located on the block?
craig
The one on my 6 was located on the pad, underneath the distributor.
 

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Discussion Starter · #6 ·
..

the pad has been punched over with a centerpunch and totally unreadable
the casting # in the side of the block are
con2 k72 3792858
i found the casting # here
http://www.adchevy.com/info/article/chevy6castingnumbers/
its a 64-67 194 but its 40 over:)...
i guess ill pound it till it blows up then build a 250...
if any body knows of one in north carolina for cheap let me know
thanks guys
craig
 
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