I performed a bench test on the new Airtex pump this afternoon to test for pressure. It's 5 psi, which is exactly what is needed for the 1956 292 "teapot" carburetor. I also compared the actuator arm location of the old and new pump. They are both the same relative to the mounting holes.  My last ditch effort to install it is to stab the pump with the flange contacting the engine (the mounting holes in pump will be too low to get the bolts started). Then place a small jack underneath and overcome the high arm resistance  to raise the pump so the holes align. However, according to 57RancheroJim's experience with these Airtek pumps,  I'm wondering if it's worth the effort.

62BigWindow:  I tried the "guide bolt" (longer bolts with cut off heads), but the bottom of the pump must be tilted up so that the arm tilts down in order to go under the eccentric. As far as rebuilding my old pump, I've heard that re-staking the new valves is a tricky process. Have you found that to be true?  Also, can you recommend an ethanol resistant kit? 

.If its that difficult to install because of extreme arm Pressure I would not suggest using it. You should be able to work the Arm with the Pump standing up on the Workbench before installing it. There is no way it should be that difficult to Install. What affect do You think that Pressure will have on the Cam Lobe if You do get it installed? I assume You are trying to install it UNDER the Camshaft-not on Top?

  

I too wouldn't use a pump with that much spring pressure. After the first two that leaked the third one has been on for a little over 8,000 miles and still working but I wouldn't use another one in the future.

Airtex is a huge supplier of pumps for OE on cars and trucks, maybe it was just bad luck I got two bad ones but I'm not impressed with the ones they make for Y blocks..

http://www.74tr6.com/fuelpump.htm

Durham Missouri

I picked this up a while back. Isn't there supposed to be a paper element filter cartridge and a spring included with these? There is a brass screen in the top. It was rebuilt at one time, but I doubt it would last long with modern gasoline.

Some of these Glass Bowl Ones are referred to as "Sediment Bowl" Pumps. The Brass Screen filters out any large pieces.. They still require an inline Filter before the Carb. If its an old rebuilt Unit it won't last long with Modern Gas. I see all these NOSR Pumps on Ebay all the Time. I wouldn't touch One unless its a newer rebuilt Unit. The old Diaphrams won't last with Today's Gas.

  

Yes, it does have a brass screen at the top, I thought they were supposed to have had a filter inside. Hm.

Are modern replacement diaphragms available anywhere that will tolerate the stuff they call gasoline?

http://www.then-now-auto.com/
Try these guys. Great to work with and I was told they mold their own rubber seals.

Durham Missouri

Woah! Exactly what I were looking fer. Thanks

The guys over on the flathead forum recommend Daytona Parts for the ethanol resistant kits
https://daytonaparts.com/?gclid=Cj0KCQjwjtLZBRDLARIsAKT6fXySK4wA6299TR4xPnSw69ppTrCkmWvRfmdZhwIFq2LIeRQzzawbgyIaAmedEALw_wcB