I get why we go with spit exhaust manifold. But I don't understand why we need two carbs. Are we drag racing or just trying to get as much power out of these little engines as humanly possible because we can? I am not confident that I can safely bring my AD to a safe stop with a rebuilt stock 235. Any more speed and I'm a threat to society. One thing that may be happening to you on a sudden stop, with twice as much carburetion as what the engine was designed for, is non-atomized fuel pooling up in the intake as the throttle valves (plural) are suddenly slammed shut, cutting off the air supply needed to atomize the fuel (liquid fuel won't combust). The intake ports on the head may not be large enough to keep the fuel atomized under the condition which you describe. Do you have a split exhaust? A less restricted exhaust should increase fuel atomization. Another thing to try is turn the idle screws in a tad. The idle circuit takes over when the throttle plates are closed. Too rich and you have raw fuel pooling up in the intake. With two carbs you double the effect. I am not trying to talk you out of dual carbs, they do look cool. I secretly want to drop a huge, high output Harley motor in one of these trucks just because I like the sound. Well, I guess the secret is out now. Don't judge me, I'm sick.
