air fuel blues!

[shmoov69]

Good info here! Glad it may be looking up for you. Let us know what the outcome is.

[Adam's 55 Chevy]

IMO your regulator cant handle the volume of your pump. I think the regulator will be your restriction. I would opt for a 132-02 regulator but only after you have tried the other options as this is a $150.oo swap although you can get some return on your current reg. Good call on not using machined fittings as these are very restrictive compared to tube fittings.

[Blown353]

That regulator should be more than enough for an A1000. At 8 psi an A1000 flows about 130GPH which is about 1/2 the rated capacity of that regulator and well within the handling range for 3/8 NPT fittings.

My SX pump had no issues feeding through a cheapie $75 Mallory bypass regulator.

Do the back the adjuster off restriction test and see what you get before buying anything new fuel-system related. If you can't adjust the regulator down past 6 psi or so, then disconnect your return line going back to the tank and rig a temporary return line into a 5 gallon fuel jug. If your pressure drops down lower then you've just confirmed you have a restriction in your return line. (With the return line in the jug, it's also a good time to get a baseline fuel flow number from your new fuel pump so down the road you know if it's getting weak on you.)

[Supervette]

No test run tonight, but I did accomplish some things. Needle and seat are clean and floats are adjusted correctly. Fuel pressure with hat off is 6 psi. New 5.5 power valve is installed. Tommorrow (Saturday) morning I will lock out the distributor and probably run it 28 degrees total timing. I will post what I get then. Im also going to install new spark plugs after the first run and gap them around .028. Im going to cross my NGK plugs I have to a AC delco. The plugs I have now are black and fouled I bet. they are R5671A-7 or R5671.

[Supervette]

I took it and tested it Saturday and popped the the new power valve on the first run. I locked out the distributor and I think it sneezed through the carb too fast because the timing was to high at that low of rpm when I punched it. Anyways Im to the point where I could block of the primary power valve and try to keep tuning it and washing my engine bores out. Or just get a pro built carb. Time for storage because of the winter up here in MN. Im really leaning on the idea of going with CSU or C and S. Ill just put an order in a month or two before spring. Then I will discuss timing issues at that time.Thats my update.