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Technical 63 Impala motor the beginning of the end?

Discussion in 'Traditional Hot Rods' started by Eth727, Nov 17, 2025 at 5:02 PM.

  1. Eth727
    Joined: Jun 20, 2024
    Posts: 337

    Eth727

    Hey guys this is continuation but a new thread of the 63 impala that went to a repair shop and was told the engine was done for.
    I got the old carb back on after putting an Edelbrock without the correct manifold. Yeah this engine isn’t done. It burns oil and smokes every now and then but screw it. It’s a go car not a show car. I was told to put 20/50 weight oil and use 91 octane gas. What do y’all think? I live in San Diego ca and drive it around town and work 2 days a week. I have vacuum gauge,temp,rpm to monitor it but want to add an oil pressure to see more of how healthy or sick the Eng is.
    Where would I install the oil pressure sender and still utilize the idiot light?
    Thanks
     
  2. Grumpy ole A
    Joined: Jun 22, 2023
    Posts: 301

    Grumpy ole A
    Member

    The idiot light sender is beside the distributor. Take it out and install your new oil pressure gauge sender or the tubing if it’s a mechanical gauge.
     
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  3. squirrel
    Joined: Sep 23, 2004
    Posts: 59,844

    squirrel
    Member

    Why bother?

    I had a Corvair several years ago. The engine was well worn, the oil light would turn on when it idled hot, in gear. The idiot light switches usually turn on around 5 psi. I put a gauge on it, and it showed that indeed it had just a couple PSI oil pressure at idle. I decided it was best that I didn't know, so I took the gauge off.

    I got in the habit of putting the transmission in neutral when I'd come to a stop, and the light usually did not go on if I did that. It would make a little knocking sound most of the time at highway speed, but never really changed.

    I put about 5000 miles on it like that. My brother ended up with the car, and not long after he found a donor engine, and I ended up overhauling the original engine, using the used bearings from the donor. He drove it for several years, and sold it in good running condition.

    The point? just keep oil in the engine, and save up your pennies, and one of these years when you're ready to tackle the engine, you can replace or overhaul or rebuilt it.

    It's not urgent yet. But if you run it low on oil, and it starts knocking, it might become urgent. So treat it carefully.
     
  4. Bandit Billy
    Joined: Sep 16, 2014
    Posts: 15,857

    Bandit Billy
    ALLIANCE MEMBER

    If you want to retain the light just add a br*** T at the block back by the distributer. One side for your light sender and the other for your oil line or electric sender. You can have your Castrol and eat it too.
     
  5. Driving worn out beaters is traditional
     
  6. pprather
    Joined: Jan 10, 2007
    Posts: 8,914

    pprather
    Member

  7. 19Eddy30
    Joined: Mar 27, 2011
    Posts: 3,856

    19Eddy30
    Member
    from VA

    Add oil with Zinc VR 1 non synthetic
    Or Diesel oil ,
    Not the High mileage oil..
    T in a Mechanical gauge
    Just to know psi , Rule of thumb
    10 psi for ever 1,000 rpms ,
    Still do a Leak down test , & compression , post results.
    If all original more likely the seals are hard on the Vavle guides ,
    Hotter plugs if oil fouling the plugs.
    Check do tune up , & get carb tuned ,
    Do you know if Carb need's tuned or
    Cap plug wires , points
    Or both ignition and Carb.
     
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  8. Budget36
    Joined: Nov 29, 2014
    Posts: 15,265

    Budget36
    Member

    @Eth727 you need to purchase some tools and check the health of the engine out yourself.
    For what you spent to have the shop tell you rebuild or replace, you’d have spent less than 1/2 the cost on tools to get results and then post results here.
    Best of luck.
     
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  9. Sharpone
    Joined: Jul 25, 2022
    Posts: 2,858

    Sharpone
    ALLIANCE MEMBER

    A couple of opinions
    - Re ***le this thread “Getting 63 Impala Running and Driving” or some thing similar so everything is in one thread as suggested by @Moriarity .
    - Purchase a shop service manual or a Motors or Chiltons book for your car. These manuals will walk you through maintenance and tuning of your vehicle.
    - The engine may be in good condition or not, you need to do a compression test at minimum. You can borrow a compression tester from almost any auto parts store.
    https://www.autozone.com/diy/ignition/how-to-do-an-engine-compression-test
    -
    Report results in this thread
    Dan
     
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  10. Mike Lawless
    Joined: Sep 20, 2021
    Posts: 724

    Mike Lawless

    Like someone pointed out previously, you may not wanna know what the oil pressure is. Keep it topped off, keep listening for unusual sounds, and RUN IT!!
    Many years ago, I had a '64 Dodge Dart beater. It was was well used, and that is being kind. I bought it that way, and when I went to change the oil, no oil came out the drain hole, even though it showed having plenty of oil on the stick. I decided there was no point. I just kept adding oil when needed...which was frequently. I drove it for three years, put another 30,000 miles on it, and sold it on for more than I paid for it.
    The point is, if it runs ok, don't worry too much about. Drive it till it tells you it's done!
     
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  11. Higher zinc 20/50W oil yes, 91 octane no, unless it's set up for it. If it's a semi stock motor, 87 it fine.....why did they recommend 91?.
     
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  12. Only need around 5-7 psi to keep the idiot light off.
    So I guess the engineers figured that was enough:)
     
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  13. nochop
    Joined: Nov 13, 2005
    Posts: 4,572

    nochop
    Member
    from norcal

    Some day a good 350 will fall in your lap when someone does a LS swap and want it gone. Might even get a trans with it.
     
  14. Whoamel
    Joined: Jul 22, 2007
    Posts: 126

    Whoamel
    Member
    from So Cal

    And since he lives in San Diego, he can slip over the border and get some authentic Mexican blankets if the seats get worn or dirty. Very traditional in SoCal.
     
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  15. Eth727
    Joined: Jun 20, 2024
    Posts: 337

    Eth727

    Yeah the mechanic recommended Kendall with zinc and 91 octane. I did a compression test last year. Here’s what it was. IMG_7483.jpeg
     
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  16. Budget36
    Joined: Nov 29, 2014
    Posts: 15,265

    Budget36
    Member

    Nothing I see there says it needs to be rebuilt or replaced.
     
  17. Sharpone
    Joined: Jul 25, 2022
    Posts: 2,858

    Sharpone
    ALLIANCE MEMBER

    Yep the compression looks good, the #1 cylinder is down a little but might get better as you drive it some.Run it.
    Dan
     
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  18. Mimilan
    Joined: Jun 13, 2019
    Posts: 1,253

    Mimilan
    Member

    @Eth727 have a good look at your engine
    Some have a "grub screw" in the front main oil gallery.
    Remove this and tap an oil pressure port there [you can leave the original oil sender as-is]

    upload_2025-11-18_21-40-10.png
     
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  19. NoSurf
    Joined: Jul 26, 2002
    Posts: 4,826

    NoSurf
    Member

    IMG_20250417_192925.jpg

    Motor swap circa 1994. Still running good. Non rebuilt 61 283. We put Ford umbrella seals on the intake valve guides.
     
    ras likes this.
  20. RmK57
    Joined: Dec 31, 2008
    Posts: 3,103

    RmK57
    Member

    Not sure why you would need a higher zinc formula oil. Be a waste of money on a clapped out 283 that uses oil anyways. I’d just use whatever 20w-50 that’s on sale.
     
    Last edited: Nov 18, 2025 at 9:43 AM
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  21. Squablow
    Joined: Apr 26, 2005
    Posts: 18,456

    Squablow
    Member

    I would ***ume (if California gas is anything like Wisconsin) that 91 is the only option that doesn't have ethanol in it. Won't help oil burning in the engine but it'll keep the rubber parts of the fuel system from crumbling and won't absorb moisture in the gas tank if it sits for any length of time. I run that in all my old cars.
     
  22. Mike Lawless
    Joined: Sep 20, 2021
    Posts: 724

    Mike Lawless

    Its very hard to find non ethanol gasoline in any grade here in CA.
    Even so, your compression numbers look fine, and 87 would be good enough.
    That motor will probably run for years. If it smokes a bit, especially at startup, its probably through the guides.
    You say the mechanic recommended Kendall. Its now labeled as PennGrade. I use it in everything I own except for mama's Toyota. You can get it on Amazon, about the same money or a little less than Valvoline VR1.
     
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  23. ras
    Joined: Apr 28, 2013
    Posts: 133

    ras
    Member

    X 2 with what @NoSurf said. I did the same thing to a 1965 327 in Belair. It got me through My junior year into my senior year driving to and from the trade school while I was in high school.
     
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