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Can Vortec heads handle a crane powermax 272, duration--272/284 gross lift--454/480.
if i have to change valve springs what springs do i need. Just talked to jegs and they said the vortec heads with this cam would be fine. due to my valve relief (this looks like 2 mustaches 1/4 wide 1/8 deep grooves on each side of the piston) any other help on this would be appreciated.

[ March 17, 2002: Message edited by: rpainter87 ]

[ March 17, 2002: Message edited by: rpainter87 ]</p>
 

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Yes, but I think you will have to change the valve springs. Stock springs are only good for .450" lift. The heads themselves can handle well over that.

They are excellent performance iron heads.
 
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