383 Stroker Oil Viscosity Recommendations?

Discussion in 'Engine Topic' started by Konner, May 9, 2021.

  1. camarochevy1970

    camarochevy1970 Veteran Member

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    I believe when I installed my Blue Print 383 they told me to run 10w-40, for what that's worth to you
     
  2. carhead22000

    carhead22000 oldblue

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    10 pounds per thousand rpm.your fine
     
  3. 1320feet

    1320feet Veteran Member

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    [​IMG]
     
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  4. kenny77

    kenny77 Veteran Member Lifetime Gold Member

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    I have a GM ZZ383 Shortblock with High Lift Scoggin Dickey Vortecs.
    I run 15W40 Rotella and Wix filter.
    My engine did NOT like Mobil 1. 10W30......That's the only other oil I've tried in the Camaro

    ^^^^^^ And to that previous 1320feet post, what the heck and how the heck do you put in a Oil Temperature Gauge?
     
    Last edited: May 10, 2021
  5. Konner

    Konner New Member

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    Update: Changed the oil from 10w-30 VR1 to "Royal Purple 36140 HPS" 10W-40. Getting about 18psi at warm idle now, and about 55 at (2500-3000rpm). Gives me a little more confidence that the oil won't go to thin and loose further pressure heading into the 115° summer! Thanks to everyone for the recommendations!
     
  6. Konner

    Konner New Member

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    Engine only has 3000 miles, so seemed a bit odd to me. Switched to 10w40, seems to have done the trick! Getting about 20psi at 700rpm idle now
     
  7. COPO

    COPO Veteran Member Lifetime Gold Member

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    The thinner the oil the lower the oil pressure @ idle.
     
  8. Lowend

    Lowend Administrator. .a car, a man, a maraca. Staff Member Lifetime Gold Member

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  9. Konner

    Konner New Member

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  10. Cardinal

    Cardinal Veteran Member Lifetime Gold Member

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    First of all, there is no specification for oil pressure at idle per say. The old oil pressure idiot lights used to come on at around 5 to 7 psi so I guess you could assume that is the lowest oil pressure specification.

    All the old manuals stated that the oil pressure should be 35 psi at 1500 rpms. As for operating oil pressure, NEVER go over 60 psi. Honestly, oiling has NEVER been a problem with a SBC.

    Now what oil to use in your engine depends on the ambient temperature of your area. I'd recommend a good quality 10W30 or 10W40 full synthetic oil and either a AC Delco or Purolator oil filter. NEVER a Fram or off brand filter. I am NOT a fan of 50W oil as it is TOO thick for most applications plus you HAVE TO warm the engine completely before driving it (and I do mean COMPLETLY!). 50W is for racing engines NOT for street engines.
     
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