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best bet are hughes 1110 springs and 2.2L retainers with oem mag locks...that'll give about .520-.540" lift capability with stock heads



And with that much lift, you'll need to have the valve guides cut down some. I wouldn't even fool with the stock Magnum valve springs. Even though they are bee hive, they are very wimpy. I think they float with the stock cam at high revs.



actually, IIRC, I had about .560" clearance between the guide and the keeper on mine, which would make .540" the most I'd consider (.020 clearance). if you went strictly by .030 less than coil bind, I could run up to .550" on my heads.

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