Main cap torque sequence, plus thrust bearing

Discussion in 'Race 400/430/455' started by Buick, Aug 2, 2020.

  1. Buick

    Buick Ramin Ansari

    OK, embarassed once again...I can’t remember the order to torque my mains, and how to set the thrust bearing, and I can’t find my old manual I used to use that told me all this.

    The internet is USELESS.
     
  2. dan zepnick

    dan zepnick Well-Known Member

    I start from the center main and work outward. Take a good hammer and give it a rap both directions. Then check thrust clearance with a dial indicator..006-.008.
     
  3. Thumper (aka greatscat)

    Thumper (aka greatscat) Well-Known Member

    Hi Ramin, I torque from center out,don't know if thats the accepted way but thats the way I do it,be incremental in amount of torque each time. Setting thrust:Torque #2 and 5 to 60 lb-ft, the others finger tight,grab a large screw drive and push from side to side against a crank flange at #2,this pushes the crank against the thrust one way then the other ,keep doing it till you hear a clunk, then insert the screw driver in the front of the #2 cap pushing the crank forward and torque the thrust cap to 60lb-ft ,do same to #1 and 4, measure end play, .004" to .007" is what I normally see.Now torque all caps to 110lb-ft in increments. Someone else may do differently,but this has worked for me,good luck.
     
  4. Buick

    Buick Ramin Ansari

    Thanks gents
     
  5. TrunkMonkey

    TrunkMonkey Well-Known Member

    Buick engine torque procedure.

    Torque it 'til it smokes, then smoke it' til it torques!

    Maybe... :D
     
  6. Buick

    Buick Ramin Ansari

    Thanks again. Got 0.007 end play. Good to go!
     
    dan zepnick likes this.
  7. Thumper (aka greatscat)

    Thumper (aka greatscat) Well-Known Member

    Good job
     

Share This Page