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LS7 Lifter Preload?

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  • #1

    LS7 Lifter Preload?

    How much preload are you running on your LS7 lifters? My internet search resulted in answers ranging from .030" to .120" with .050"-.060" being the most common.
    Tags: 060, 120, clearance, common, don, drag, feel, half, ing, internet, lifter, lifters, ls1, ls7, nut, rod, run, running, search, slight, solid, tighten, till, turn
  • #2
    The way I have adjusted preload is you lightly turn lifter rod untill you feel very slight drag. then tighten nut another half turn. You really don't have a clearance like solid lifters. look in sticky note I'm sure someone has posted a proceedure to adj.
    sigpic
    1998 Trans Am Convertible A4 - WS6 hood, WS6 air lid, WS6 rims, drilled/slotted rotors.

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    • #3
      LS Rockers are not adjustable. You have to get the exact pushrod size. LS7 lifters are just a TINY bit different than ls1 ones, so you have to accommodate that difference.
      1999 Camaro - 6 liters of fury.....

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