Thread: SBC 350 pushrod length

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at mild lift the rocker needs to be in the center of valve stem how are you working this thru ? you need very lite set up springs on the heads or you just push the push rod cup down in the lifter . when you get it all work out for the right push rod length your checking at O lash so you need to add to this if you want them right as the hyd needs preload off the lifter clip by 030 so they would be +.030 from O lash if you want to go at it the right way but some only 050 longer increments . roller rockers geometry can not be the same form crane to crower to harland sharp and steel stamp with stock length push rods. and you have stack up like jerry said .you can get in to longer valves .smaller basecircle cam. mill heads. deck block .head gaskets .the all adds up. valves up in the sunk in thats why you get the right push rod for the job every job i do this on less bone stock and takes me two hours of screwing around

This is the mark of where the rocker is contacting the valve