I was also thinking the converter may be pushed to its limits. That's why I was doing a trial and error. I dont know anything about compression, or much about stall, but I will post the specs of the heads if that will help. I talked to the techs at Comp Cams, and they suggested 2200. Before I got hands on it, the motor had a prior build, less than a year earlier. I didn't want to take any chances or someone's word, so I took it to a machine shop. The motor and car both belonged to my nephew. He purchased it from the guy that built the motor prior to me getting my hands on it. So I had it rebuilt.I would think with that cam and those heads, you will be pushing the converter to the high end of it's stall. What is the compression ratio?

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