Do you need to upgrade your push rods for a xp cam with ls7 lifters and 130# springs on a double roller? If so what is the length with stock rockers and stock heads? 7.050 is stock length zzp sells a 3/8 push rod in 6.95 and 7.00 and recommends it for the heavier springs? I have comp cam 7.050 5/16th push rods in the old motor that I ran with 1.9s. Will those be good enough? Haven't seen any info on pushrods when upgrading a to a cam so just wondering.
Thanks!