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73-87 Chevy _ GMC Trucks => Brakes, Frame, Steering & Suspension => Topic started by: Swampyankee74 on November 27, 2022, 05:16:28 PM

Title: Factory lettering on frame?
Post by: Swampyankee74 on November 27, 2022, 05:16:28 PM

I'm cleaning up the fuel tank, brackets and such. My 4 year old son is running around with a puddy knife scraping the frame. He says "it says something here daddy".
Anyone ever seen this? It is on the driver's side frame raile between the front and rear cab mount on the top of the frame says "FY5718-100" I might be wrong on the first two letters. Any info on this??

Title: Re: Factory lettering on frame?
Post by: Swampyankee74 on November 27, 2022, 05:20:44 PM

H

Title: Re: Factory lettering on frame?
Post by: VileZambonie on November 27, 2022, 06:18:40 PM

I've never seen any factory markings like that. Perhaps your truck had a frame swap? Did you check the frame vin to see if it matches your cab's vin?

Title: Re: Factory lettering on frame?
Post by: Swampyankee74 on November 27, 2022, 06:41:23 PM

I where would I find this vin# on the frame?

Title: Re: Factory lettering on frame?
Post by: VileZambonie on November 27, 2022, 06:44:37 PM

74 should be a top of the frame rail near the steering box.

Title: Re: Factory lettering on frame?
Post by: Swampyankee74 on November 27, 2022, 06:47:57 PM

Found it on the frame. My cab is in different building. Going there nos to check  now

Title: Re: Factory lettering on frame?
Post by: Swampyankee74 on November 27, 2022, 06:52:28 PM

H

Title: Re: Factory lettering on frame?
Post by: Swampyankee74 on November 27, 2022, 06:53:36 PM

T41505500

Title: Re: Factory lettering on frame?
Post by: Swampyankee74 on November 27, 2022, 07:04:07 PM

The vin matchesd

Title: Re: Factory lettering on frame?
Post by: Swampyankee74 on November 27, 2022, 07:10:08 PM

H

Title: Re: Factory lettering on frame?
Post by: Swampyankee74 on November 28, 2022, 04:52:01 PM

https://67-72chevytrucks.com/vboard/showthread.php?t=327709

Found someone else with it

Title: Re: Factory lettering on frame?
Post by: Swampyankee74 on November 28, 2022, 04:57:43 PM

First two letters are fx like in that other post

Title: Re: Factory lettering on frame?
Post by: VileZambonie on November 28, 2022, 05:44:57 PM

Neat, no idea what it means though.

Title: Re: Factory lettering on frame?
Post by: Swampyankee74 on November 28, 2022, 08:11:55 PM

Yes, definitely strange, especially with no info out there on it