Setting Vavle Lash Solid Camshafts

Discussion in 'Race 400/430/455' started by JEFF STRUBE, Feb 6, 2009.

  1. JEFF STRUBE

    JEFF STRUBE Well-Known Member

    I hook a Bump button to the starter and Bump the Engine and do one side at a time. There are some other ways People do it. I would like to here yours.
     
    Last edited: Feb 7, 2009
  2. DaWildcat

    DaWildcat Platinum Level Contributor

    Starting with #1 at TDC on the compression stroke (both valves closed), you can work your way through the firing order one cyl at a time every time you turn the balancer 90 clockwise.

    Devon
     
  3. Guy Parquette

    Guy Parquette Platinum Level Contributor

    That's exactly the way I do it...I have my balancer marked for it.
     
  4. motorman

    motorman Well-Known Member

    The proper way to set valves is to do one cylinder at a time by adjusting the exhaust when the intake starts to close and the intake when the exhaust starts to open. Practice this and it becomes fast and easy and is the most accurate way to do it.
     
  5. K0K0

    K0K0 Jamie

    X 3 this way i can't mess it up my balancer is aslo marked every 90
    Jamie
     
  6. DaWildcat

    DaWildcat Platinum Level Contributor

    Can you explain why this is? I have always set lash when the lifters are sitting on the base circle well opposite of the lobe profile; I'm always interested in hearing about new stuff.

    Devon
     
  7. motorman

    motorman Well-Known Member

    There are several advantages, you do not have to move from one side of the engine to the other if you have to follow the firing order and it is difficult to position the balancer every 90 deg. with a remote starter switch. The newer camshaft profiles that have inverted flanks make it inaccurate to adjust lash at tdc especially with larger duration lobes.
     
  8. Jim Weise

    Jim Weise EFI/DIS 482


    He's correct, with a bump button this is the best way to do it. Although I do it when the adjacent valve is at max lift.

    JW
     
  9. UnseenGSX

    UnseenGSX Well-Known Member

    That is how I do it as well.
     
  10. BuickBuddy

    BuickBuddy Registered V8 Offender GK

    Me too. It's easier to just do 1-3-5-7 then go over to the passenger side and adjust 2-4-6-8. No mix ups or wondering if you missed a valve.
     
  11. TORQUED455

    TORQUED455 Well-Known Member

    I've always adjusted both valves a few degrees after the intake closes. I follow the firing order, and turn the engine by hand. Pretty simple stuff, and there are more than one correct answer here.
     
  12. Michael Evans

    Michael Evans a new project

    My balancer is marked 360 degrees.

    Another little trick that I have done is mark the adapter plate on my Mallory Comp 9000 at every place where it fires.

    I follow the firing order. It takes longer, but is done correctly.

    I have tried the other way and never could get them all.

    With all the spark plugs removed, it is easy to turn the motor over by hand with a 1/2 drive ratchet.
     
  13. JEFF STRUBE

    JEFF STRUBE Well-Known Member

    I have heard that some can set Vavles withTurning the motor over to TDC on number 1 cylinder and they can get some intakes and exhausts then they turn the motor over again and they can adjust the Rest. I have heard that they adjust vavles the way the engine fires. They only have to turn the motor Twice and they have all the vavle Adjusted. Has anyone done this or no how to do it. Give use the info.
     
  14. DaWildcat

    DaWildcat Platinum Level Contributor

    That might work for a stocker or mild hydraulic, but I prefer not to do it with solids. Here's the quick & dirty 360° trick that I do not recommend:

    #1 on TDC, compression stroke:

    Adjust

    #1 exhaust valve
    #1 intake valve
    #3 exhaust valve
    #5 intake valve
    #7 intake valve
    #2 intake valve
    #4 exhaust valve
    #8 exhaust valve

    Rotate balancer 360° (#1 TDC on exhaust stroke)

    Adjust

    #3 intake valve
    #5 exhaust valve
    #7 exhaust valve
    #2 exhaust valve
    #4 intake valve
    #6 exhaust valve
    #6 intake valve
    #8 intake valve

    Devon
     
  15. DaWildcat

    DaWildcat Platinum Level Contributor

    At the end of the day we're all saying pretty much the same thing - set the lash when the lifter is well onto the base circle, away from the clearance ramps, even if it takes awhile.

    Devon
     
  16. Buicks4Speed

    Buicks4Speed Advanced Member

    X3 especially on large cams.....
     
  17. exhaust plus

    exhaust plus Well-Known Member

    This is the way I do it also. About 30 years ago, I had a Super Street 67 Camaro with a 327 powerglide. It ran very consistant 11 teens. ( the index was 11.08). I always set the valves by using the 90 degree method (per Chilton manual). One day I heard about this method and tried it. Some of my valves were tight and some were loose with the new method. I was running a big roller with roller rockers and girdle(.705 lift). I could tell the car sounded different when I started it. Next time at the track, it went 10.96. I was sold. Scott
     
  18. BQUICK

    BQUICK Gold Level Contributor

    I've always done it Devon's NOT recommended way. Double checked with one cylinder at a time by adjusting the exhaust when the intake starts to close and the intake when the exhaust starts to open and showed no difference in clearance. But the biggest cam I've run is only .596 lift.....

    Bruce
     
  19. Woody45

    Woody45 Member

    I'm getting ready to adjust the valve lash on my 455 solid with TA roller rockers. I'm not sure what procedure I'll use but what I'm not sure is what to set them at. I've heard 22 and 24. Does that seem ok.

    Thanks Woody
     
  20. Michael Evans

    Michael Evans a new project


    Depends if it is performance or a daily driven.

    I would set them at seven thousands for a daily driver and for performance (like mine) set at three thousands.



    Set with a "new" gages.
     

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