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Discussion Starter #1
while reading an article in chevy hi performance magazine on the medium rare mouse it lists as an option to use a crane powermax 272-H but mentions nothing about head work. the powermax carries a gross lift of .454/.480 well above suggested lift on the heads. any info on this will be appreciated since i am currently building this motor.
 

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According to Scoggin Dickey, you just need to upgrade the springs. They have a spring upgrade that will allow for .525" lift
 

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rpainter87

i don't know for sure, but i don't see how you can increase your rocker travel by changing springs. I would check to see if you have to machine your valve guides to allow for clearance for larger cam.

JB
 
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