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need assistance installing cam and greasing

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by solowookie, Aug 28, 2001.

  1. solowookie

    solowookie 1/2 ton status

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    OK guys, I got a book engine overhaul. the book seems to step me through installing the heads with the torque and sequence pattern etc. but it does not tell me how to install the cam.

    now I'm assuming this will go through the opening above where the timing chain goes, but I'm not seeing any notches or anything that would indicate how this thing would be aligned.

    now I do see after the sprokets are on where there are some alignment marks, but I do not know if that is the only way to align it.

    also, I have prelube for the cam. I know there are other parts that should be pre-greased, but I am not sure exactly what those parts are. any suggestions???

    <font color=blue> Jeff - may the force be with you</font color=blue>
    <a target="_blank" href=http://coloradok5.com/gallery/Jeffs-Stuff>http://coloradok5.com/gallery/Jeffs-Stuff</a>
     
  2. Pugsley

    Pugsley 1/2 ton status

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    The cam will line up with the timing sprocket - there's nothing else you need, unless you want to go full blown high-performance and degree it. Far as the lube goes, load all of the cam journals and lobes, as well as the lifters. Get a long bolt that will thread into the cam like a handle to help install it without gouging the bearings - that's all there is to it[​IMG]

    If the shoe fits, get another one just like it
    <a target="_blank" href=http://pugsley.alloffroad.com>pugsley.alloffroad.com</a>
     
  3. solowookie

    solowookie 1/2 ton status

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    thanks pugs... just wanted to verify that was indead how it lined up...

    I'll have to find a bolt to help me thread the cam through... (sounds pretty easy)

    <font color=blue> Jeff - may the force be with you</font color=blue>
    <a target="_blank" href=http://coloradok5.com/gallery/Jeffs-Stuff>http://coloradok5.com/gallery/Jeffs-Stuff</a>
     
  4. Pugsley

    Pugsley 1/2 ton status

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    I've seen guys do it without the bolt before, but it makes it so much easier.

    If the shoe fits, get another one just like it
    <a target="_blank" href=http://pugsley.alloffroad.com>pugsley.alloffroad.com</a>
     
  5. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    A bolt is the easiest way thats for sure. you have to be very careful installing the cam as its very easy to damage the cam bearings by nicking them with the lobes of the new cam.

    Your engine book should have a picture of how to align the timing marks. There is a dot on each gear, most books show too line it up with the cam gear dot at 6 o'clock and the crank gear dot at 12 o'clock so the marks are as close together as they can possibly be. This makes it easy to be sure your marks are lined up. Most books also omit the fact that lined up this way your motor is now at #6 TDC and not #1. So line up your cam like they say and when the gears and all are installed and its all good spin the motor one revolution so its at #1 TDC. Now when you drop your distributor back in it and line it up so the rotor is pointing to number one it will actually start...[​IMG]

    Rene

    <font color=green>Dyslexics of the world...UNTIE!</font color=green>
     
  6. RESTORE89

    RESTORE89 1/2 ton status

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    he's giving good info Jeff, i did just that on the 302, and spent better part of a day trying to figure what i did wrong, and why the truck would not time right and start
    are you having fun yet??? [​IMG]

    It needs a bigger motor.
    what's in it now?
    doen't matter it NEEDS A BIGGER MOTOR
    89 350tbi/700r4h/np208/4.11's
     
  7. solowookie

    solowookie 1/2 ton status

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    OK guys, I got a further question on this... you are saying to move it to the TDC??? what in the heck is the TDS, and do I know when it is pointed a cyl. 1??? now I'm assuming that he is meaning it will be at one o-clock, and to keep runing it until the dot is pointed at 1 o-clock???

    <font color=blue> Jeff - may the force be with you</font color=blue>
    <a target="_blank" href=http://coloradok5.com/gallery/Jeffs-Stuff>http://coloradok5.com/gallery/Jeffs-Stuff</a>
     
  8. Pugsley

    Pugsley 1/2 ton status

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    TDC is Top Dead Center - the top of the piston's travel range. After installing the timing chain, rotate the crank so that the #1 piston is at TDC. Then, when you drop in the distributor, point the rotor to the #1 firing position. This is to properly time the ignition.

    If the shoe fits, get another one just like it
    <a target="_blank" href=http://pugsley.alloffroad.com>pugsley.alloffroad.com</a>
     
  9. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Jeff the cylinders are all designated with numbers. so number one is the drivers side front cylinder. TDC is Top Dead Center. So the number one cylinder will be at the very top of the bore to be at TDC. When I said 'pointed' to number one I was referring to the rotor on the distributor pointing to where the number one plug wire would go.
    For your motor to fire all 8 cyliders it has to rotate twice. So you can have the distributor off by 180 degrees and it will look right but not run.
    The dots should be lined up in a straight line to each other as I described before when the number one cylinder is at the very top of its stroke. once it is all lined up like that you can rotate the motor one full revolution and the motor will be set at number one firing position, TDC.
    I hope this helps a bit.

    Rene

    <font color=green>Dyslexics of the world...UNTIE!</font color=green>
     
  10. solowookie

    solowookie 1/2 ton status

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    thanks guys... I got it it now so that shouldn't be a problem. I just got me leveler so with a little luck I'll have that engine out today (I got the short block sitting on a stand, and I borrowed another stand).

    I guess we'll find out because I dislocated a rib so if I can get that stupid think worked be in we'll be ready to go!

    I may need some help lining up the distributor to #1 when I get there, but I gotta fealing that is going to be a little while.

    <font color=blue> Jeff - may the force be with you</font color=blue>
    <a target="_blank" href=http://coloradok5.com/gallery/Jeffs-Stuff>http://coloradok5.com/gallery/Jeffs-Stuff</a>
     
  11. CaptCrunch

    CaptCrunch 1/2 ton status

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    Jeff...

    You have vortech cylinder heads which require a different torquing sequence then the typical small block cylinder head. You will also need NEW head bolts for the application and will want to get a hold of or purchase a torque angle guage.Let me know when you get to that point and I will fax or email the sequence to you.

    -Mikey
    1987 Chevy K5 Blazer- 350 TBI
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  12. BIGRIG

    BIGRIG 1/2 ton status

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    Jeff.. to find top dead center the easy way
    1. take out the spark plug
    1.5 coveer the hole with your finger
    2. turn the crank with a wrench so that the timing mark on the balancer goes to 0 no the timing indicator.
    3. when the mark is on 0 and the compression blows your finger out that is tdc.

    hopefully this helps!

    Chris C

    MY DRINKING TEAM HAS A FOUR WHEELING PROBLEM![​IMG]
     

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