40083 NOS Fuel Pump; what's it worth?
 

I would have purchased this in either the late 70s, or around 1996 or around 2001. Went on a few buying sprees using the old Chevy High Performance Catalogue. I cannot find any date on the box. Pump has an aluminum tag that reads "AC 40083" and below that: "469" I think.

AC is NOT embossed on the pump anywhere that I can see.

I do not believe this is assembly line correct. It is an over the counter HP pump.

My camera is down at the shop. Headed that way in a little bit. Will post pics when I get back.

Need some informed opinions.

Thanks for any help.

Sorry for the crappy tag pics. Just too shiny. Can't get it to show well.

This pump has 1/4 inch pipe thread for inlet and outlet. It can easily be re-clocked to the correct position to use on my 57 Dual Four engine. It won't be technically correct, but not sure I care that much for a driver. Car will never be judged. Best thing about these HP pumps is they are rebuildable by ANYONE with basic skills and they can be re-clocked, which is what I would do with this one to make the inlet outlet line up with what I need for the 57.

The correct fuel pump (4346) for my engine is anywhere from $450 (needing a rebuild) to $800.

Looks to me like a no brainer to just use this one.

Blackstone made a lot of pumps for AC, and they made generics without the AC logo too.

How much are you asking for the pump??

Not planning to sell it. Was just curious if it was anything special before I put it on the 1957 Dual Four engine destined for my 57. Apparently not.

How can I replicate that CAST Finish.............I have a pump that has been glass beaded
and need a best solution to resemble NEW

If you do'nt care about the numbers - Just use it.
The 40083 pump that has good value is the one with the AC logo on the top, and part number on the Flange.
Yours is a GM later part, the die hards don't use those.

That is what I figured Jeff. Planning to use on the dual four engine. I like that I can remove the bottom and re-clock if for clearance.

Original dual quad fuel pumps bring big $$$. I think I paid like $40 for this one many years ago.

Chuck:
I know some consider this really bush league, but might be worth a shot IF you have a pump that can be disassembled. Not sure it would work with a fully assembled pump. I have had good luck on a few cast aluminum parts painting with a high heat aluminum cast finish paint. I think the one I used was one with ceramic (at least that's how it was advertised). I blast the part with fairly course sand or coal slag, blow it really clean; spray it, and then bake it in the oven at 450 degrees for about 30 min. The surface is incredibly scratch resistant.

Would be very strange but in case the gasket is like these I will pay good money for it if not petrified.
2 have "Q"
1 has "B"
all the "GM"