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Need help decoding my GM cast block help!

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Old 10-20-2016, 03:54 AM
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Superdave831
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Default Need help decoding my GM cast block help!



Old 11-08-2016, 10:04 AM
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snomuncher
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Default Block Decoding

Lots of web resources to select from to decode this. Looks like a 1968 327 4-bbl, 250 HP with Powerglide. There should also be another date code cast into the rear of the block on the side opposite the large casting number.

Last edited by snomuncher; 11-08-2016 at 10:06 AM.
Old 11-08-2016, 06:29 PM
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kenpeindl
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According to the stamping T1019HJ this is what you have.

T=Tonawanda (engine plant)
10=Month
19=Day
HJ=Engine Code - 1968, 327, 250hp, 4bbl, Powerglide, Full Size GM Body

As for the partial VIN 18L128731 it breaks down this way.

1=Chevy
8=1968
L=Van Nuys, California GM Assembly Plant. Back in the sixties made full size chevy's later, before it closed in 1992, it built Camaro's and Firebird's.

Ken

Last edited by kenpeindl; 11-08-2016 at 06:56 PM.

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