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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Jun 2019 Posts: 157 'Bolter | | 'Bolter Joined: Jun 2019 Posts: 157 | That serial number threw me for a loop until I finally found a note about a change in engine ID in 1957 at the very bottom of the list on this web site:http://chevy.oldcarmanualproject.com/models/engine.htm#57eng
I'm not certain about the date code as they usually only have three numerals (day and year) after the letter (month). But, it seems that the perhaps the date code system changed in 1957 as well. I tend to agree with you that your engine is from 1957. The date code (to me) would suggest July (G) 11th, 1957.
Brian
'51 Chevy 3604 Project
'28 Chevy LO basket case
'83 GMC Sierra 4x4
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