I have two 40726 A/C Fuel Pumps

One has stamped CI or C1 40726
2nd Has stamped 197J 40726 (J as in Jack)

Please explain , I'm guessing that the 197J is the Original
to my 07E 1970 Z28 ????

Value of the CI pump ????? if I have Fred Restore ???

The "C" in "CI" is March. The "I" is 1969. "J" should be 1970. "H" is 1968 on the 2nd letter. You can see the pattern..Joe

X66 714 / Joe, Thanks for your decoding .........

1) Did the Julian Dating start in 1970 (with my 197J above) ??? Why is J 1970

Do you have charts or a source of info that judges use and you would share ?

What might The 40726 C (march) I (1969) have for value if Fred Restores ($295)

Pics of the Two Dated 40726 Pumps that Goat Hill did for me several years ago

Notice how one has a Dark Finish (paint or phosphate ???) and the Other appears to have the same "Dirty" Original Finish that I sent in

Also Notice the Fuel Section Zinc is NOT Yellow (zinc) Di Chromate as was Original

I'm wanting to SEE pics of what show quality restored AC Fuel Pumps should LOOK Like

My 3rd Pic shows a AC Service replacement (undated)......What Finish is this as it doesnt look "Natural" Aluminum to me.................

Someone suggested that I have the Upper Aluminum Casting Vapor Honed........

I was thinking to Glass Bead and shake/tumble in my Ceramic Media Machine ???

Here is mine as received back from Fred Ballard in 2021

Mine 1968 302
by Fred

169INDY, The (upper) Cast Portion appears to be coated with Aluminum Paint ?????
I need to replicate Original as mfg finish ..................

That looks more like cast paint. I’ve seen alum intakes painted that look way closer to correct.

There is no aluminum paint on the casting. The castings are cleaned with light media and I use a low gloss clear coat to keep dirty fingerprints off of the surface. I also have an utrasonic cleaner but it is no match for some of the original staining that a lot of the pumps come in with. That way any dirt or fingerprints can be wiped off with acetone and a rag. I also offer to not add the clear coat for people who have a lot of pitting and plan to repair that part on their own. I would be interested to see how those repairs come out. The fuel sections are cleaned and then tumbled before I take them to the plater. All of these processes have been improved by me incrementally over many years.

-Fred-