You're right, this all new to me. After doing my homework I found that I need a '65 225 c.i. slant six well type choke thermostatic coil spring with conecting rod. This coil spring and housing mate with the block common to the exhaust manfold. There is a connecting rod that leads to the choke lever on the Holley 1920. The answer to your question is no. The car will idle fine, but as soon as I punch the accelerator it stalls. I listened to the carb when I do this and it sounds like it's flooding or starving for fuel. Can't quite tell. It makes a big sucking sound and then stalls. I just got it back from mechanic because they gave up on it. I will watch the coil spring today and have more info for you. They rebuilt the carb and still had the problem. I wonder if it could be the 50 year old fuel pump. They said it was outputting 5 lbs, but I don't believe they checked it. Anyway, I've ordered a new holley and fuel pump, but still need that coil spring that mates to the cylinder wall common to exhaust manifold. Any info would be great. jeffrey356.