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Customs 283 ENGINE

Discussion in 'The Hokey Ass Message Board' started by Mister E., Feb 27, 2020.

  1. fred46ford
    Joined: Apr 10, 2020
    Posts: 2

    fred46ford

    Hello Eric, like old wolf said, I have an sm420 in my 67 C10, its a cast iron bellhousing with the three bolt starter. The truck came with a 283. if you can find a donor vehichle, grab the z bar, and all associated linkage and flywheel/clutch/pressure plate of course or if buying new you could look for the parts for a 67 c10 283 4 speed. Hope this helps.
     
    Mister E. likes this.
  2. Mister E.
    Joined: May 4, 2018
    Posts: 474

    Mister E.
    Member
    from USA

    Thank you, I appreciate the info.
    I'm gonna try to see what I have that is compatible, but right now it's on hold cus I had to return the engine hoist that I borrowed. And I just noticed the intake manifold needs new gasket. It looks like gaps in manifold gasket area, so I'm going to pull the intake and make sure, also I need to replace a couple exhaust manifold (flange ) studs.

    Will update as am able.

    Thanks
     
  3. You don't need a Z bar or any clutch linkage. Use the 6 cyl clutch fork and everything else will work exactly the same. in 55 thru 59 all the clutch linkage parts are the exact same for the 6 or V8
     
    Mister E. likes this.
  4. Mister E.
    Joined: May 4, 2018
    Posts: 474

    Mister E.
    Member
    from USA


    Cool. Thanks
     
  5. Mister E.
    Joined: May 4, 2018
    Posts: 474

    Mister E.
    Member
    from USA

    Hey all,
    I just got new set of intake gaskets as I noticed something looked off. So I'm going to tear down the intake remove the gaskets and install a fresh set just to be safe.

    Otherwise, I am looking to have to exhaust studs replaced on the left header as the look worn and I don't want anything to go wrong while installing exhaust once engine is ready to go in.
     
  6. s55mercury66
    Joined: Jul 6, 2009
    Posts: 3,980

    s55mercury66
    Member
    from SW Wyoming

    Replacing those studs now is a good move, with the manifolds right there in hand. What do you think is wrong with your intake gaskets?
     
    Mister E. likes this.
  7. Mister E.
    Joined: May 4, 2018
    Posts: 474

    Mister E.
    Member
    from USA


    See gaps where the gaskets are supposed to be, so I bought new gasket kit and plan to install
     
  8. Mister E.
    Joined: May 4, 2018
    Posts: 474

    Mister E.
    Member
    from USA

    Hey folks,

    I borrowed my neighbors hoist and engine stand again and have decided to tear down again, and have the block & heads sent out for a good going over.

    My question is, what is a fair and reasonable price as far as having the heads cleaned/surfaced?
    As well having the block honed if possible, or bored if necessary?

    Reason I am asking is that I saw some scratch marks at the bottom of the cylinder walls of 3 or 4 of the pistons and am not sure whats causing that to happen.
    So I am now thinking it may be best to send out the block and heads just to be safe.

    Still planning to put it all back together myself, for the experience of getting to know my engine inside and out.

    Can someone tell me what is too much to pay for this, as well as what is a reasonable and fair amount that a machine shop would charge?

    Thanks in advance.
     
  9. Mister E.
    Joined: May 4, 2018
    Posts: 474

    Mister E.
    Member
    from USA

    **UPDATE**
    Dropped engine off at machine shop and the guy said he will clean it up, check everything and hone the cylinders for me and make sure the engine is prepped and ready to reassemble. Quoted price $1000.00

    The down time will be 1 month he said.

    I told him what I want is to take it down to bare block, clean it up, hone the cylinders, whatever else it may need. Then reassemble with new bearings, lifters, pushrods, etc etc. I told him to keep an eye on the $$ tally & call me before he goes above the $1000.00 limit. (Which is only a starting point).
    He said no problem and gave me his business card.


    Now what to do...

    Hmm.......
     
  10. Mister E.
    Joined: May 4, 2018
    Posts: 474

    Mister E.
    Member
    from USA

    Still waiting for machine shop to get back to me about my 283.
    Will update this as soon as I hear anything and find out when it will be ready to pick up.
    Hope everybody is doing well and being safe out there.
     
  11. Atwater Mike
    Joined: May 31, 2002
    Posts: 10,154

    Atwater Mike
    ALLIANCE MEMBER

    You are on our minds. Godspeed with your new machinist.
     
    Mister E. likes this.
  12. Mister E.
    Joined: May 4, 2018
    Posts: 474

    Mister E.
    Member
    from USA


    Thanks.
    I am anxiois to see how well it turns out.
     
  13. Mister E.
    Joined: May 4, 2018
    Posts: 474

    Mister E.
    Member
    from USA


    Heyyyyy!!!

    I just got off the phone with the machine shop, they got it all cleaned up nice n puurdy, now he says he's looking at what it needs and as soon as he figures it all out he will call me wuth price to do complete rebuild! Woohoo!!

    Can not wait!!
     
  14. Neb Hillbilly
    Joined: Dec 20, 2019
    Posts: 337

    Neb Hillbilly
    Member

    Excited to see how it goes from here!
     
    Mister E. likes this.
  15. Mister E.
    Joined: May 4, 2018
    Posts: 474

    Mister E.
    Member
    from USA

    Same here, I will be excited to see how well it drives once it is finally installed and all set up.
    I know it is going to be considerably better than the I6.
    Not saying that I don't like my old 6, just that the 8 will give better results on the streets/highway.
     
  16. Loved the 283 in my hiboy sedan. HRP

    [​IMG]

    [​IMG]
     
  17. Mister E.
    Joined: May 4, 2018
    Posts: 474

    Mister E.
    Member
    from USA

     
    Deuces likes this.
  18. lcfman
    Joined: Sep 1, 2009
    Posts: 223

    lcfman
    Member
    from tn

    Hotrod primer very clean engine. I like the plug wire routing and the low mount alternator. Did you fab the low alternator mount or buy it? If you bought it who is the supplier?
     
  19. Mister E.
    Joined: May 4, 2018
    Posts: 474

    Mister E.
    Member
    from USA

    Hey all, got a question... is it possible to put a posi or limited slip in my rear diff?
    I'm thinking of this ahead of time since I will be driving through steep mountain terrain going home, as well as when winter hits again I am sure it will be much easier than an open diff with 1 wheel spinning.

    Thanks in advance
     
  20. s55mercury66
    Joined: Jul 6, 2009
    Posts: 3,980

    s55mercury66
    Member
    from SW Wyoming

    They were available for your differential, but are no longer available new. However, a locker from a 14 bolt GM rear is supposed to be a bolt-in deal, and will probably be much easier to find than a used one for an HO 72. Do a web search for "14 bolt locker in HO 72" and see what you can find for details on the swap.
     
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  21. Mister E.
    Joined: May 4, 2018
    Posts: 474

    Mister E.
    Member
    from USA

    Ok, however when I pulled the diff cover the other day for comparison, my diff is a 12 bolt.
    Does that matter?
    Thanks
     
  22. s55mercury66
    Joined: Jul 6, 2009
    Posts: 3,980

    s55mercury66
    Member
    from SW Wyoming

    It should not, apparently GM copied the differential dimensions when they designed the 14 bolt rear. You will have to do a search to get all the info, it's been a couple years since I looked into it, and my memory aint what it used to be.
     
    Mister E. likes this.
  23. Mister E.
    Joined: May 4, 2018
    Posts: 474

    Mister E.
    Member
    from USA

    Lol, I think we're all getting to where memory isnt what used to be.
    Anyway, another thing is that the lockers I do find are all 30 spline and wont match up to mine being (I believe, 16 or 19 spline??)

    I'd have to pull the axle and count again to be sure but I do know they are much thicker than a 30 spline or even a 28 spline and much fewer by count.
    I think that is going to be my biggest issue over all is spline count
    Meaning the axle splines btw
     
    Last edited: May 23, 2020
  24. s55mercury66
    Joined: Jul 6, 2009
    Posts: 3,980

    s55mercury66
    Member
    from SW Wyoming

    That could be an issue, there were some changes to the HO 72 around 1960, I believe, so some of the stuff that bolts onto those from the 14 bolt rear ends won't work on the older ones.
     
  25. Mister E.
    Joined: May 4, 2018
    Posts: 474

    Mister E.
    Member
    from USA

    Thats what I thought.
    On a happier note, I do now have the illusive 4.11 R&P that is so saught after!

    I just have to pull my 4.56 and install the 4.11. Then we will see some improvement.
    Along with the freshened up 283, she's gonna move along quite nice I think!
     
    s55mercury66 likes this.
  26. I installed the entire pumpkin from a 1950 one ton in a 66 3/4 ton. Some 3/4 ton trucks had a No Spin differential. They have overrunning ratchets instead of clutches. I have two in my hoard one is a 66 and the other is a 1986.
     
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  27. Mister E.
    Joined: May 4, 2018
    Posts: 474

    Mister E.
    Member
    from USA

    That's cool.

    Yeah, I keep looking for a locker online, or a limited slip, or even posi/trutrac, but they all end up being wrong axle spline setup. I'm not 100% sure unless I pull the axle again and recount, but I think the axle spline for mine is a 16 or 19 count?? whatever the Ho72 originally came with, it's got thick splines on driveshaft as well as axles so I believe that's what it is supposed to be.
    If I am wrong, please forgive my mistake.
     
  28. Mister E.
    Joined: May 4, 2018
    Posts: 474

    Mister E.
    Member
    from USA

    Guess I need to correct myself, I did not end up with the 4.11 as I had thought.
    Someone else beat me to it. Oh well, sucks to be me!
    Search continues I guess...

    Also am still trying to find out if I can either get a locker or post for my diff, or if there is a way to convert mine to a limited slip or something, IDK. Never done this before, so trying to get whatever info I can.

    Thanks in advance
     
  29. s55mercury66
    Joined: Jul 6, 2009
    Posts: 3,980

    s55mercury66
    Member
    from SW Wyoming

    59Apachegail likes this.
  30. Mister E.
    Joined: May 4, 2018
    Posts: 474

    Mister E.
    Member
    from USA

    Well, I picked up my manifolds today, brand new studs installed and ready to mount them as soon as I get my engine back from machine shop. Hope to hear from him maybe tomorrow or might have to call him.

    At least things are moving forward and soon will be able to return home.

    I miss Missoula and the mountains behind the house. (Can not wait)
     

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