It's funny you say that, because I do have a selection of about 3-4 shooters in my parts box along with an assortment of pump cams. I found that box in the basement that had a lot of my various carb parts. I didn't remember ever buying them (I might've bought the pump cams, I seem to have a pretty complete set).MostMint wrote:Most of the time this problem comes from not enough fuel dumped in to overcome the "stall" in the air when you open the butterfly in the carb. The way to fix this is install a more aggressive accelerator pump cam and/or a larger shooter nozzle to et more fuel in faster to compensate.
I know nothing about the Edelbrock but on a Holley these are easy changes. I assume also that your accelerator pump cams are adjusted properly. You'll need the chart that shows which cam is the best (they are color coded) and you'll need to know your current shooter size. I bought a box of parts from Holley that has the cams and the shooters a ways back. I looked in it tonight and it appears I gave you several shooter sizes a while back (I left a note for myself). Maybe you still have them and can remember where they are?
I have a bigger issue than an acceleration pump. The drivability is just not very good in general, even when making slower throttle movements, which makes me think the basic jetting is off. Being that both these carbs are 'used', I might even try what has worked well for me in small engines -- just run some fuel system cleaner through it. I've had that fix a bunch of poor-running lawnmower size engines.
-Dave