Awe Sieg, I feel for you. :mad:
That had to sting a little to start smacking shiny parts so soon after :G-Dub:

I'd have lit up my oxy acetylene torch... Metal
Bends easy when it's glowing like a cherry!!!



Hahahaha



That sucks but is "hot rodding".

I know, you should see my tail pipes near the top of the rear wheels......pancakes.

I have a map gas torch but the angle wasn't the best, besides I don't like playing with fire that much any more........and Norwood was starting to piss me off so hammering on him a bit was good therapy. :D

That plug cap was arcing and causing a slight miss.

I went from 70 to 67 air bleeds. Idle now has a little meat to it.

Tighten the accel pump a little.

It's getting better.

Next will be going to 5.0 power valves from 5.5's.

I'll probably get some 65 air bleeds just to test as the idle by-pass valve is about a 1/2 turn from closed out of a 5 turn range.

Ya might of knocked some sense into the carb too, all that energy right into the combustion chamber, through the intake, and Bam. She'll run better.....:warning:

:warning: :thumbsup:

It hurt but at least its good now.

I don't know if this is helpful or not but my Holley 650 double pumper (4150 HP) that I had on my Gen 1 350 had a 65 power valve stock. I ended up running a 75 power valve which dumped some extra fuel in sooner... and that helped to get rid of the flat spot I had when accelerating coming off idle. Sometimes it's hard to tell if you lean or rich when it stumbles but on mine the larger power valve did the trick. Good luck with the tuning :thumbsup:

Thanks Dale - I'm going by the basic rule power valve = .5 or manifold vacuum which I'm only getting 10 inches, 11 if it's perfect. I have stock in 4.5, 5.0, 5.5, and 6.5. :D It has 5.5's in it now.

For the off-idle flat spot the pump linkage adjustment, squirter size, and pump cams are what I use fine tune. I'm hoping it's in the ballpark and I can start fine tuning when the weather improves.

Hopefully it's good, the boot still contacts the pipe but it's not compressed against it like the other was and I switched to MSD's "racing" boot which is labeled high-temp. We shall see. :warning:

Scott, you are going through exactly the same things that I'm going through on my car, so I love this thread!!

I'm not an experienced carb tuner guy and after purchasing a Holley 4150 DP from Patrick at Pro Systems I'm into all sorts of tuning territory I've never been to before.

I installed a wideband O2 sensor which really helped get a hand on some things like the power valve choice. When you are driving the car, you can actually see when the power valve opens by watching the gauge!! The carb shipped with a 5.5 PV incorrectly, which I've bumped up to a 7.5, and I changed out the idle air bleeds a couple times as well to get rid of a pig rich idle -- so I feel your pain :bang:

Keep on working at it!! :thankyou: