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Thread: Engine Block Serial Number Lookup?

  1. 01-17-2014, 01:10 AM #1
    Jackalope
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    Engine Block Serial Number Lookup?

    Is there anywhere to find info (specs, origin, which vehicle it is associated with, etc.) for a 6-226 engine by the engine serial number?

    I plan to rebuild my 6-226 engine soon in my '58 pickup. I know that the engine in it is not the original one. The block was painted red, and I was told that red indicates that it was built for higher altitude (or some special purpose). Just trying to make sure I do it right.
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  2. 01-25-2014, 12:08 PM #2
    UAL 213
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    Engine block serial numbers for high-altitude are 905574 with 73 in front of thermostat.
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  3. 01-29-2014, 11:56 PM #3
    Jackalope
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    Yup. My engine is a high altitude 7.3:1 compression ratio. Thanks.

    Another question: what is the difference between the 6.86:1 and the 7.3:1 engines (besides the compression ratio)? Some parts must be different.

    Found the answer: the head is shallower, allowing for a higher compression ratio.
    Last edited by Jackalope; 02-04-2014 at 11:39 PM. Reason: Found more info
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