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Old 01-30-2008, 09:24 AM
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Head spring pressure question

I had new seals and the valves ground on my TFS 31400001 heads a couple years ago. Also had new springs put in. The only info I got on the springs was that the Installed pressure was 94-96lbs and the open pressure was 288lbs at .480 lift. I am wanting to go with either a new cam or 1.6 rockers. Can anyone help me out on what the highest lift I could safely go is?
Thanks for any help.
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