I need a new fuel pump. mine is leaking all over the place. The car orginialy is a 1967, 326 ci, 2brl carb and no A/C. I now have a 670 cfm holley 4 brl on the 326. Does anybody know the part number of the fuel pump I need? I think the orginal part number is 40506. But with now having a 4 brl carb should I have a bigger pump? The fuel pump number for the 400ci and A/C cars is 40590. Does anybody see a problem with putting in the 400ci fuel pump?
thanks in advance
TRAVIS

Travis,
The pumps are the same for either carb. What you are going to needing to look at are the inlet/outlets. The differences in the pumps at the parts store will be whether they have one or two outlets. Some have a 'return to tank' line which makes the pump have an extra 1/4 inch line running out of it. So, take your pump off first and take it in with you. Visual aids always help the counter guy. Any Pontiac V-8 pump will work as long as it has the right outlet(s) and inlet.

Yes, the '67 400 cars had vapor return lines.

Like on the pump in the picture has the small outlet. The only question on getting a pump is whether you need it or not. You could cap it but you are better off not having it if you don't need it.

I have 1 inlet and 1 outlet on the pump. I called napa and advanced auto and neither one can get the correct pump. Does the pump with the vapor return deliver more gph than the one without. Or do all the pumps deliver the same gph? Can I just cap off the vapor return if I can't find the correct pump?

Carquest has them. Advanced can get them. You got the wrong help on the phone.

I just love this site. Fbody69 is answering my questions before I get a chance to post them!! Pics and all. Thank you so much for the help

I think someone here said they capped the return line on their pump and the pump wouldn't work right.

They work just fine as long as you get it capped good.