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455 Olds issue (oiling)

Discussion in 'The Hokey Ass Message Board' started by 56oldsDarrin, Jul 5, 2012.

  1. 56oldsDarrin
    Joined: May 9, 2009
    Posts: 396


    I put a fresh 455 olds Into my 56 Olds.
    rebuilt C Heads a fairly mild Lunati Cam (think performer RPM).
    I did not confirm the oil galley plug at the back of the block, Or that it had the tiny hole in it (an Olds Thing)

    There was a little flash rust in a lifter bore... the lifter went in but it was a little tight.

    Upon fire up, that lifter never pumped up, so i tore the Intake off and changed that lifter... the Cam looked good, so did the new pushrod and the new rocker assembly.

    NOW the same lifter is having I am thinking the lifter is an effect not the cause.

    Is sounds OK at 25 mph (under 1500 rpm) but over that say 45 mph the lifter
    seem to collapse, hard throttle it collapses, after a a block at 25 it seems to quiet down.
    Seafoam helped a bit but didn't cure it.
    I really don't want to pull it back out, but I think i may have to.

    any ideas?
  2. Don's Hot Rods
    Joined: Oct 7, 2005
    Posts: 8,319

    Don's Hot Rods
    from florida

    Are you getting oil coming out of that pushrod and rocker ? How about the others ?

  3. Grumbler
    Joined: Mar 2, 2009
    Posts: 358


    Souns like a little piece of crud may have ended up in the lifter oil supply holes during the rebuild
  4. desotot
    Joined: Jan 29, 2008
    Posts: 1,840


    are you sure it is the lifter? olds seemto have lowoil pressure to the top end and the pushrods are known to plug causing the rockers to wear on the aluminum rocker stands causing wear and "lifter" noise.

  5. 56oldsDarrin
    Joined: May 9, 2009
    Posts: 396


    to clarify, its #7 exhaust side, all the rockers are new.
    I will pull the valve cover and look for oil squirt... good idea Don.
  6. 56oldsDarrin
    Joined: May 9, 2009
    Posts: 396


    OK Valvecover off ran for about 3 minutes mostly Idling a few blips to around 1000 rpm.
    Oil barely oozes out of the rockers on the left bank, after 3 min nothing still out to #7,
    intake or exhaust.
    I'm thinking bad pump or missing galley plug ??
    but it looks like the motor is coming out.

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