Labor Day Putting down your wrenches or time for MORE wrenching? 
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| | | Forums66 Topics128,010 Posts1,055,299 Members48,419 | | Most Online14,466 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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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Oct 2018 Posts: 30 Olddog | | Olddog Joined: Oct 2018 Posts: 30 | Hello friends, I wire brushed my frame, and found a number on the right front, FC102 19439, please help me understand what this number represents, is it the year, or does it represent half ton, Three quarter ton? Just why it is stamped on there? Thank you.
| | | | | Joined: Apr 2005 Posts: 7,440 Bolter | | Bolter Joined: Apr 2005 Posts: 7,440 | Please post what vehicle you are working on. ðŸ›
Martin '62 Chevy C-10 Stepside Shortbed (Restomod in progress) '47 Chevy 3100 5 Window (long term project) ‘65 Chevy Biscayne (Emily) ‘39 Dodge Business Coupe (Clarence) “I fought the law and the law won" now I are a retired one! Support those brave men/women who stand the "Thin Blue Line"! Hug a cop! USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
| | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | Yes, always post your make, year, model truck (and engine size, if an engine question). 1948 GMC? That might be the chassis serial number (Chevrolet did not stamp a serial number on the frame until around 1956, I think?) FC102 19439 http://www.oldgmctrucks.com/page0010.htmlF = 1947-1950 C = conventional cab (pickup) 102 10 = 1/2 ton 2 = long bed Does that look familiar? | | | | | Joined: Mar 2004 Posts: 6,212 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 6,212 | You have uncovered the Chassis Serial Number...19439 is the unit number... Mike B  | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | If you look at links at the bottom of the page that I posted above, I think the 19439 Chassis Serial Number was used on an FC 152 truck built in 1949. http://www.oldgmctrucks.com/page0015.htmlI am reading/decoding this correctly? | | | | | Joined: Jun 2011 Posts: 5,096 Crusing in the Passing Lane | | Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | I have 3 '37 GMC, T-18HD trucks, all have the SN stamped on the RF outside frame.
Ed
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires. '47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle. '54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed. '55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
| | | | | Joined: Oct 2018 Posts: 30 Olddog | | Olddog Joined: Oct 2018 Posts: 30 | If I forgot to thank everyone, please forgive me! I Sincerely appreciate all of your Knowledge sharing. Thank you!
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