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Labor Day Putting down your wrenches or time for
MORE wrenching? 
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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: Feb 2012 Posts: 43 New Guy | | New Guy Joined: Feb 2012 Posts: 43 | I got the serial # off the block behind the dist. and looked it up in the tech tips under Engine Serial Number Prefixes. The tip says the letters and numbers in front of the serial # will tell me the year and displacement. The serial # I found is 0757824F255X so I am assuming that F is for Flint and that I have a 261 instead of a 235 in my 53 COE. Can anyone verify and what year am I looking at. If it is a 261 instead of a 235 is that good or bad? Thanks | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 |
F255X
F = Flint, MI
255 = 1955 2nd series truck engine
X = 3100 or 3200 regular engine (235)
A 261 would have been very nice.
| | | | | Joined: Feb 2012 Posts: 43 New Guy | | New Guy Joined: Feb 2012 Posts: 43 | | | |
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