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Joined: Apr 2004
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OP
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alright guys here we go
i have fount the engine stamp it is as follows
F1013XAG
F=FLINT 6 CYL
10=OCT
13=13TH DAY
XAG=
DOES ANY BODY KNOW WHAT XAG
stands for
Thanks for any help
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Joined: Jul 2000
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Sorry, but i can't find anything on XAG either. I doubt that its original to '63 though, because they didn't start using 3 digit codes until 1970. Try giving this code to your Chevy dealership instead of the casting number and see if you can get lucky this time.
Are the intake and exhaust manifolds cast as part of the head or are they separate castings?
Does is say "Mexico" anywhere on the block?
To the left of the casting number there should be another set of casting numbers, something like "CON2 F129", the F129 would mean June 12, 1969, for example.
I.I. #3174
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yes it says "CON2"
also i do not think this is the orginal engine and if it is the person told me wrong year for chassis but it does hace the rear supsion that came on the 63 the kinda of weired one
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called GM and they said XAG is a 194 cid 65-66 chevelle or nova
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I thought they might say that. Apparently the "X" isn't part of the coding, only the "AG", which would be what they are saying.
I.I. #3174
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I've got a known- to- be -original '68 292 block, stamped numbers are FO627XAE. This engine was in the truck when I bought it in 1973.
I've wondered about the "X" myself.LMC Truck has some partial codes (and vin codes) broken down in their catalog. They don't list any X. I wonder if it is a dealer- exchanged engine under original owner's warranty? Just a wild guess.
My other block is stamped FO626UH. LMC's chart does correctly ID it as a '67.
I/I #4101
'71 GMC Jimmy 350, sm465, np205,3.73 posi.
'68 C/10 Stepside 292 (.030 over) Offy Intake, 500 CFM AFB,Clif headers, sm465, 3.73 posi.
'67 K/10 454 project.
'72 K/5 rolling frame project.
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guys remeber this block came out of 63 lwb truck and also acourding to gm they did not drop the x they have a record XAG but could not tell me what x ment
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Call Kevin Jackson at GM 512-356-1078. He can give you the answer if there is one. He runs the "Information Station."
Good luck Buffalo37
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