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Thread: SBC oil pressure

  1. #1
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    SBC oil pressure

    Afternoon all

    What oil pressure should i realistically be looking for on a mild SBc please 15/20 psi at idle or higher?

    45psi at 3500?
    Clocks not connected so jury rigging a mecahnical just to fire up and then fitting all new gauges once I know what I have going on

    TIA

    Paul

  2. #2
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    Sounds good to me!

    For avoidance of doubt, you're gonna pre lube this beforehand, drill down the dizzy hole jobbie?

    Chris

    Sent from my SM-T515 using NSRA mobile app
    Last edited by Happydaze; 31-08-24 at 05:27 PM.
    Bumper sticker - This is an historic vehicle and only has three speeds....... if you don't like this one you sure as hell won't like the others.

  3. #3
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    Quote Originally Posted by Happydaze View Post
    Sounds good to me!

    For avoidance of doubt, you're gonna pre lube this beforehand, drill down the dizzy hole jobbie?

    Chris

    Sent from my SM-T515 using NSRA mobile app
    Thats the paln yes
    Same as on my rover V8
    What sort of pressure should i have Chris please?

  4. #4
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    I'd be happy enough with the pressures you mentioned. It doesn't require crazy pressures and some say too much is worse than being a bit under. None is obviously bad! You can put GTX in it and get bigger readings, but does that mean anything?

    Chris

    Sent from my SM-T515 using NSRA mobile app
    Bumper sticker - This is an historic vehicle and only has three speeds....... if you don't like this one you sure as hell won't like the others.

  5. #5
    NSRA member plumpcars's Avatar
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    I've had those same figures out of a number of stock SBC over the years, perfectly fine.

  6. #6
    NSRA member mygasser's Avatar
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    Quote Originally Posted by plumpcars View Post
    I've had those same figures out of a number of stock SBC over the years, perfectly fine.
    agreed

  7. #7
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    Thank you gents
    I have had a Rover V8 for years so have a good idea about them
    SBC all new to me so hence some of my dumb questions but better to ask than stumble aorund in my book

  8. #8
    NSRA member Blackpopracing's Avatar
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    I get 55-60 psi hot at 2000+ rpm.
    Idle (hot off a motorway run) approx 23psi, std hot idle (town) about 30psi.

    Cold I have to be careful as it will go to 75psi at 3000rpm untill the oil thins.

    I'm running a std Melling pump that I blueprinted and smoothed out the ports and fitted a GM yellow spring that ups the pressure at higher rpm by 10psi.

  9. #9
    NSRA member chevy2's Avatar
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    Everyone likes to say they’re motor makes good oil pressure,
    the 350 in my ‘66 Nova has always only made around 20-25 at idle and peaks at approx 30-35 max and it’s been fine for 20 plus years that way which proves those numbers work and with its fair share of thrashing!
    the slightly lower numbers than many others quote is nothing to do with the motor its purely down to the unique 62-67 ‘Nova only’ oil pump that run shorter gears and produce less pressure.

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