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  1. #11
    Join Date
    Jan 2002
    Location
    Reading, Berks, UK.
    Posts
    1,584
    You should be ok to get a set of push rods and swap over.
    No need to take manifold off, just be careful when pulling out of the lifters.
    The push rod guides are just that, a guide, lubricant shouldn't make any real difference here, its not a bearing surface, you might want to find the guide to pushrod with the biggest clearance and take the others out to this.
    Check the pushrods you have on a flat surface to see if there is any whip in them.

    Give everything a good look over, and then when assembled before you put the rockers back on with the push rods in the lifters wind the engine over by hand and just check the amount of lift you have, just to make sure you haven't wiped a cam journal.
    If something doesn't look right then it will be inlet off and look at the lifters etc.
    Have a look at the rockers themselves to make sure nothing is wrong here.

    Just check, check and then check again.

  2. #12
    Join Date
    Oct 2018
    Location
    Shipston-On-Stour
    Posts
    60
    Long time since I ran a 429 but I agree with Bigblock - this is not likely an oil supply issue. More likely an alignment issue with those guides in my view. I never used guides on any of my 429's incidentally. Interesting the wear is only on one head - perhaps check how the guide is fitted on the good side for comparison??
    Also as mentioned by someone else, be careful not to pull out a lifter when taking out the pushrods. They normally require a jiggle to break the oil suck. 5/16 diameter should be fine for your replacements. As you have aftermarket rockers it might be worth checking pushrod length before you order new ones - you never know!!
    Dax with 1964 Dual Quad 427 and Toploader box

  3. #13
    Join Date
    Nov 2004
    Location
    Portsmouth, Hampshire
    Posts
    290

    Update

    It has taken some time but I finally got some new push rods which has prompted me to update this thread for those who helped.
    When I took the push rods out to inspect further I discovered the rods which were showing wear in the guides were completely different to those that weren't and more importantly they were longer !!! I am sure that must be my problem !
    I have no idea what happened but it looks like the guy who built my engine many years ago somehow managed to pick up different rods half way through the build !
    I have also been reading that you must use hardened rods with guide plates and the damaged rods dont look like they are.
    Anyway I am hoping to try and install the new rods tomorrow and set the lash and see if it fires up ok.
    Paul

    SRV8 - 429 Ford Big Block, 4 speed toploader

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