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View Full Version : 40083 NOS Fuel Pump; what's it worth?


Lynn
04-16-2025, 12:53 AM
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
04-16-2025, 02:26 AM
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
04-16-2025, 06:41 AM
Blackstone made a lot of pumps for AC, and they made generics without the AC logo too.