Fuel pump stamp oppinions

[Tuna Joe]

I’m no expert at all but here is my legit Sept 69 40482 AC fuel pump for my L89 corvette

[X66 714]

Originally Posted by Tuna Joe

I’m no expert at all but here is my legit Sept 69 40482 AC fuel pump for my L89 corvette

Yours make sense. The 1st 2 are letters, "I" "I" which is as you say Sept 1969. The original that is posted I have no knowledge on. Originally they were 2 letters (month & year). Later changed to 3 numbers (julian date) & 1 letter which was the year....Joe

[John Brown]

In the back of older warehouse versions of AC fuel pump catalogues there were tables or charts to decode those long numbers to figure out what number pump to sell your customer. Sometimes that would come up to 40727, but if it was an older pump, a superceded pump number would be listed. As a parts man who started in the 60's, I'm saying that was an assembly line pump.