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Well unfortunately the only way to know what camshaft you have is to either pull it out and check the numbers, or check the lobe lift with a dial indicator and multiply it by your rocker ratio. I looked at the voodoo series of camshafts from lunati and they have some that are pretty small and would be great for your application and some that are huge. You didn't happent to notice what ratio the roller rockers said on them did you? Also you want to push the 400 to about 6000 rpm and no more. You probably want idle to be about 800-1k. Are you running injection or carb? You did the stall test correctly but not the flash test. The good news is that if you decide to go down in cam size, you shouldn't have to do anything with your valve springs. They should already be overkill for a smaller cam. You can usually pick up used stalls from people for fairly cheap, you just need to look at the condition of the fluid that is in them. Its always a gamble with used ****, but you can try a few different ones cheaper that way. A th350 and a th400 use the same converter so that makes it easy.


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