I've always had Holley's. However, my 1930 Model A coupe has a ZZ4 small block Chevy with an Edelbrock carb. There are no carb numbers on mine, as I'm told that the Endurashine versions like mine didn't come with them stamped into the base plate like the non-Endurashine carbs have. I guess I need to start with finding out what series Edelbrock carb I have. I'll try to attach a photo on here, maybe (hopefully) someone can ID the series type visually. Here's the issue - the car runs very well, UNTIL I try to mash it from a stop or a slow roll. Then it spits out the carb and dead stalls. It's pretty severe. I moved the accelerator pump to the top hole, but that didn't help. In reading on line in an attempt to learn this new to me Edelbrock carb world, there's lots of Edelbrock carb terminology used that I'm not familiar with. It sounds to me like the secondaries might be flying open to quick, but since there is apparently no secondary accelerator pump to feed that action with appropriate amounts of fuel, the only way to fix that would seem to me to be to somehow slow down the rate that the secondaries open. How in the world do I do that? Am I on the right track here with this theory? The primary and secondary mixtures seems to be pretty much on, I have no issues with the way it runs except for the severe spit and stall at abrupt WOT. Any ideas on what carb I have and how best to deal with this issue? Thanks, guys - I hope I can get the photos to post here.