Roller rockers on Olds455
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Roller rockers on Olds455

  1. #1
    Senior Member jet460's Avatar
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    Default Roller rockers on Olds455

    Posting this for a friend.

    He is running a 73 Olds 455 and wants to add roller tip rockers/guide plates.

    He got the roller tips/guide plates off ebay, which sends off sirens in my head the minute I hear this, but hey, it's his money...

    He tells me the guide plate holes are slotted and he doesn't know how to position them.
    Also says the push rods that came with them are longer than stock.
    That's a new one to me never having had anything Olds.

    Also, he does not know the adjustment on the rockers: Zero lash plus 1/2 turn? 3/4 turn? ??

    Need some solid advice here. I don't want to see him break this motor out of ignorance.

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    Senior Member matt1840's Avatar
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    im running a 468 olds with roller rockers guide plates and aftermarket pushrods as well...

    harland sharp roller rockers
    comp cams 4842 guide plates
    and 9.950 rods. (dont just go buy those) measure first.
    0 lash and .025 (1/4 turn) preload with hydrolics.. (someone jump in if im wrong)

    have him get the comp cams 4842 guide plates they are direct bolt in and ready to rock no machining of the heads needed for these. are his rockers for 3/8 or 7/16 studs? if 7/16" your gonna have to have the head machined for those threads. or get the adapter studs from andy over at "oldsperformanceproducts.com" hes got a guideplate and stud kit that requires no machining of the head..

    measuring for the rods will be the pain with hydrolic lifters... i took an old stock lifter took the measurement from top of the lifter housing to the top of the plunger dimple.. took apart the lifter filled it with jb weld and pressed the plunger in until i got the correct measurement.. i now had a solid lifter with hydrolic measurements for the measurement process..

    if trying to measure with hydrolics the plunger will compress before you reach midlift throwing off your measurements. dont forget to add your preload to your measurement after you achieve mid lift..

    tons of write ups on here how to properly check valvetrain geometry message "steelcomp" he helped me out a tremendous amount and can get your pushrods when your ready. awesome guy to deal with.

    heres my thread
    http://performanceboats.com//showthread.php?t=42986

    and another i got my info from before i started.
    http://www.performanceboats.com//showthread.php?t=17545


    get yourself the right tools, a light checking spring and the adjustable pushrod.. you will be much happier..

    if your near sacramento come by see if i can help you out.. ive got the adjustable rods, dial indicator even my homeade lifter! lol
    Last edited by matt1840; 06-16-2010 at 10:03 AM.
    Matt 74 tahiti 468 olds 72 mph.
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    Senior Member jet460's Avatar
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    Thanks for the info. He is in Salida, and I will pass on the info.

    I attempted the same thing with my BBF, and after much head scratching, I just gave up and left it alone.

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    Senior Member matt1840's Avatar
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    Quote Originally Posted by jet460 View Post
    Thanks for the info. He is in Salida, and I will pass on the info.

    I attempted the same thing with my BBF, and after much head scratching, I just gave up and left it alone.
    andy over at "olds performance products" will get him in the right direction parts wise to make it cost effective.. as long as the cam isnt somethin crazy.. hes easy to talk to call him up hes a bible of olds info..


    if your buddyes doesnt already know stay away from mondello, ive personally had nothing but problems with that company along with many others on this site..

    check out "realoldspower.com" as well.

    good luck.
    Last edited by matt1840; 06-16-2010 at 10:21 AM.
    Matt 74 tahiti 468 olds 72 mph.
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    Senior Member jet460's Avatar
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    I wish I could get him to stay away from ebay...

    His bro got him a "fluidamper" off ebay.
    It was a chinese HB with "Fluidamper" stamped on it.
    Even the keyway was cut crooked!
    Straight paperweight.
    I had to laugh!
    It was sad, but had to laugh....

  8. #6
    Senior Member 2002CP19's Avatar
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    Quote Originally Posted by jet460 View Post
    I wish I could get him to stay away from ebay...

    His bro got him a "fluidamper" off ebay.
    It was a chinese HB with "Fluidamper" stamped on it.
    Even the keyway was cut crooked!
    Straight paperweight.
    I had to laugh!
    It was sad, but had to laugh....
    Or a nice smooth ANCHOR.
    Quote Originally Posted by schick View Post
    Hold it firmly on the ground, a few pelvic thrusts should do the trick. If not repeat till satisfied!

  9. #7
    Senior Member matt1840's Avatar
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    Quote Originally Posted by jet460 View Post
    I wish I could get him to stay away from ebay...

    His bro got him a "fluidamper" off ebay.
    It was a chinese HB with "Fluidamper" stamped on it.
    Even the keyway was cut crooked!
    Straight paperweight.
    I had to laugh!
    It was sad, but had to laugh....
    tell him build that thing right and dont skimp or its not gonna last long... i have a thread on here of my build he should check it out.. its the proper way to build an olds.. i can have my foot in it all the way across the lake all day long and no probs..
    Matt 74 tahiti 468 olds 72 mph.
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    Senior Member jet460's Avatar
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    Quote Originally Posted by matt1840 View Post
    tell him build that thing right and dont skimp or its not gonna last long... i have a thread on here of my build he should check it out.. its the proper way to build an olds.. i can have my foot in it all the way across the lake all day long and no probs..
    The motor is about 10 years old, and was built solid the first time. We've had it apart, and checked everything. Still in great shape internally. He is just adding the rockers, and I want to make sure he gets it right. I passed on the info in this thread to him, and he is on it. Here's a few shots of it..

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  11. #9
    Senior Member matt1840's Avatar
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    Quote Originally Posted by jet460 View Post
    The motor is about 10 years old, and was built solid the first time. We've had it apart, and checked everything. Still in great shape internally. He is just adding the rockers, and I want to make sure he gets it right. I passed on the info in this thread to him, and he is on it. Here's a few shots of it..

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    ive seen that intake before but when they came out they were all chinese knockoffs of the jr victor.. is that an actualy eddie manifold?
    Matt 74 tahiti 468 olds 72 mph.
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  12. #10
    Senior Member jet460's Avatar
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    Quote Originally Posted by matt1840 View Post
    ive seen that intake before but when they came out they were all chinese knockoffs of the jr victor.. is that an actualy eddie manifold?
    It's a real one. Brand new, special order. Was not easy to find. I think he paid like $600 for that thing. The great pyramid...

  13. #11
    Senior Member matt1840's Avatar
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    Quote Originally Posted by jet460 View Post
    It's a real one. Brand new, special order. Was not easy to find. I think he paid like $600 for that thing. The great pyramid...
    $600!!!!!

    he spent that much on an intake but went cheap on a damper and valvetrain? wow...
    Matt 74 tahiti 468 olds 72 mph.
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    AKA OhOneWS6 Last Mohican's Avatar
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    Quote Originally Posted by matt1840 View Post
    $600!!!!!

    he spent that much on an intake but went cheap on a damper and valvetrain? wow...
    X2. Nothing to be gained with roller tips. Most of the friction is in the pivot. He should spend the money and get some quality full rollers.

    Whats up with that carb? The main body looks different on the side between the bowls. Cool valve covers.

  15. #13
    Senior Member glastornjet73's Avatar
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    my cousin messes around with mustangs abd had a set of fms bolt down 1.7 pedistal mount rockers i bolted them too a old 403 head i had laying around geometry is perfect other that it will need longer pushrods if u use a set of 1.6 bolt downs u might not even need to.... IMO im not a fan of the 5/16 x 3/8 olds style retrofit studs to properly do stud mounded rockers you need to remove the heads and have them drilled and tapped for 7/16 studs stud mounted rockers have too much flex in them to be mounting them to a 5/16 bolt with no support up top just my .02

  16. #14
    Senior Member jet460's Avatar
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    Quote Originally Posted by matt1840 View Post
    $600!!!!!

    he spent that much on an intake but went cheap on a damper and valvetrain? wow...
    No, his bro has an ebay obsession, and bought the damper on an impulse, which they sent back.
    The rockers he just got are a comp cams kit.
    The original ones were pretty worn, so he figured these are an upgrade. If they are not, he won't use them.
    I'm not sure they will fit anyway, but that is one of the things we are trying to figure out.

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