Lm7 valve springs in 5.7 vortec head
July 9th, 2018, 5:25 PM
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Lm7 valve springs in 5.7 vortec head
hello i would like to know if anyone has swapped lm7 5.3 behive springs into 5.7 vortec heads so i can get just a little bit more lift out of the heads this is for a marine application and do not need crazy lift or anything just looking to upgrade to behive since i swapped vortec heads onto an older 350 i cant find any spring specs so i do not know if this would be an upgrade yes i know the ls6 springs are a popular swap but i have a set of 5.3 springs left over from a pervious build
