That's been about 25 years ago. But I remember the Chevelle having very good street manners even though I ridiculously overcammed it. It did have a 3500 converter and 4.10 gears. The carbs were outta the box new and they did not run the engine overly rich. The Pinto was a different story. I remember tuning the carbs a good bit before it was right, but it did run well after tuning. The Eddy's design is just such that it is way more forgiving to overkill stupidness.