Technical 3 deuces on SBC running out of gas??

Everyone says 2.5-3.5. I've ran mine at 4.5 before with no flooding issues. Just got to keep an eye on those needles...........rl

 

I don't remember if you ever said whether your distributor had a working vacuum advance. Whether it does or doesn't take a close look at any and all wiring and terminals running to the distributor, the points, and condenser. Especially any wiring or connections that flex when the vacuum advance makes the breaker plate move.

 

thanks for your response, no vacuum advance, its an older Accel dual point with a tach drive.
I tried to stay period correct when I was building it.. I had it completely apart.
thx Rich

 

You are running a ballast resistor ?

 

Ok, I didn't read every reply, yet I did read its a used red. Those are vane pumps, and if I recall correctly 80gph. Should be more than enough volume. Sweeping away some memory cobwebs I had the same issue with a pair of Holley blues in the racer. They were used but fairly new (knew the seller well). What had happened was one of the vanes had just enough light rust to be taken put of play, the other pump had 2 vanes stuck. The car would pull like hell 1st n 2nd then die and pick back up. I pulled the plates off the bottoms of the pumps and voila, there it was. I polished em with some 1000 sand paper and put em back together in the pits at the track. I was hoping to go 11.20s but couldn't crack 11.70s due to the shut down in 3rd. It worked, I was rewarded with a 10.88! Then a breakout 10.86 on a 10.87 dial, but hot damn I was fast! It ran great until I asked it to go to work. Easy, free, happy all around. Did you pull the bottom of the pump?

 

internal in the coil, not an external

 

Yep, tore the red down before going to the blue, hoping to find exactly what you described.. but no, vanes fell out in my hand and zero corrosion. Did have a lot of magnet material in the armature area so I replaced it.
Appreciate the time
Rich

 

Might read the fine print I know Mallory “internally resisted” coil still needs a external ballast resistor

 

will do...thank you What if I did both?

 

Points coil - internal resistance - 3 ohms or less .
Electronic ignition coil -internal resistance - 1.5 ohms or less
External ballast resistor needed with points coil
External ballast resistor depends on electronic ignition system .
Ballast resistor needed to keep from burning up the points .
That's the extent of my knowledge .

 

New type power valves don’t fit these carbs without some alteration/ machining.
Leaking, blown or faulty power valves will cause problems, as in too much fuel so look at your plugs ?

 

I did not read all the post for this topic, so forgive me if I’m repeating something that you may have already tried.
I recently had a similar issue with my car and tried everything that I could think of.
Rebuilt the carbs, changed the distributor, coil, spark plugs and wires, fuel pump, fuel lines and fuel pressure regulator with the same issue after all that was done.
I did finally find the issue as it was a leaking intake valve. After I did a leak down compression check I could hear the air bypassing into the intake. If I had done this test in the beginning it would have saved me a lot of aggravation. Hope you find your issue, good luck in your quest!

 

Thanks for the input, greatly appreciated

 

I have the modified PV in the primary carb, tested ok last night. Yes plugs are rich looking but that is all based on garage running, adjustments coming. Appreciate the input Rich

 

My "tries" are almost a carbon copy of yours. Time for another compression test.
thanks for your time Rich

 

May not show up in compression ck. , as was mentioned , showed up in a leakdown test . Had a bent valve show the same way .

 

I had a bad power valve on a Holley 4 barrel last year. Would idle fine, but backfired and bucked like crazy under any load or acceleration. Doesn’t sound like what you’re describing here.

 

Well folks, took the center carb off, went through the whole process again, clean, adjust etc. fired it up, tried all 3 acc pump settings and it still just went blah! So I pulled a valve cover and started it and it looks like cyl 4 exhaust either is bent or the cam lobe is going. Bummer. Winter tear down I guess

 

Well , it's winter ..

 

Don’t get in no all fired hurry to tear it down. Do we know if the lobe is gone or going bad. Stick a pushrod to her and compare lift to other up and down cousins with a dial indicator. Might be ok, unless you drove around for a year like my grandkid did.

 

Oh I plan on some more diagnosis before I will.