40083 NOS Fuel Pump; what's it worth?

[Lynn]

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.

[Lynn]

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.

[John Brown]

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

[Biscayne]

How much are you asking for the pump??

[Lynn]

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.

[CamarosRus]

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

[Pacecarjeff]

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.

[Lynn]

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.

[daveg]

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"