Quote:
Originally Posted by WildBillyT
If they are 062/906 Vortecs you probably won't be able to go over .460 or maybe .480 lift without interference issues. That's the achilles heel of the Vortecs.
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They can be machined to accept different springs/retainers from my understanding. Most people say they can get them to clear .575" but don't suggest going past .550". Crane Cams sells a kit for $250 (springs, retainers) that is good for .550" but I think it can be done cheaper with LT4 springs/retainers and minor machining.