Engine - 440, mild build, 10.0 to 1. Carb is an Edelbrock 750, and I'm done with it. Been a pain since day 1. After buying it, I read on the forums where many others have had similar problems with 750. I realize there are Holley lovers who will criticize this direction - but thinking of replacing the 750 with Edelbrock 600. Car is a 4-speed 65 B-Body with 3.09 first gear in 833 trans, and 2.76 rear. (Was auto car but converted). Good cruiser, and with the 3.09 first gear, OK getting started. With a Holley 700 dp engine did 385 hp on dyno when new. Has about 5k miles on it. The question - for a car that's used primarily cruising on the highway, will the 600 be enough carb?