I would like to know if anyone knows what the max valve lift can be on a set of stock magnum heads. This is completely independent of the valve springs which will be replaced the match the cam when it is purchased.

For example the GM Vortec head in stock trim has a max lift of .480" before you need to do machine work to clearance for more lift.

Thanks!

 

go to www.mmeracing.com and ask mark.