4000 stall converters run anywhere between $1000-$1300 with the anti balloon plate. So I want to be able to work with the one I have. I think I can go a little bigger with the cam something in the range of .420-.430 lobe lift with 250-260 duration but with a split lobe favoring the exhaust side. I think I would pick up 40-50 horsepower but I wanted to get opinions. Hopefully someone has a dyno program they can run the numbers on for me.
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