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Thread: OIL Pres Question

  1. #1
    Senior Member SENIOR BUILDER
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    OIL Pres Question

    If a sbc has 12 pounds at idle hot (700rpms 180 deg) and 30-35 cruising (14-1600 rpm) and 50 anything over 4k does this make it bad. The motor is new and yes at a idle I would agree it is low(but its a chevy)when its hot but in no way do I think the motor is hurt. as I was always told 7 psi per 1000 rpm is min and fine. The thing runs drives sounds great. Also I could turn it up to 900 and it sits at 20 at idle.

  2. #2
    Senior Member RACING JUNKIE
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    if you do not drop below probably 5 lbs at idle you should be ok.

    Is it a stock oil pump?

  3. #3
    Senior Member SENIOR BUILDER
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    Also if it matters it has a relocated oil filter with big bradded lines that I was told could also lower the pressure trying to puss the oil threw them big lines #6 bradded lines over 5ft each.

  4. #4
    Senior Member SENIOR BUILDER
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    Quote Originally Posted by chevguy65
    if you do not drop below probably 5 lbs at idle you should be ok.

    Is it a stock oil pump?
    yes stock oil pump

  5. #5
    Senior Member RACING JUNKIE
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    I think your ok at 12lbs.

    If I am wrong I know one of the guys will jump in and save the day

  6. #6
    Senior Member EXPERT BUILDER
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    #6 braided for remote mount, is too small. Minimum should be #10
    Ed

  7. #7
    Senior Member SENIOR BUILDER
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    Quote Originally Posted by mcracecars
    #6 braided for remote mount, is too small. Minimum should be #10
    Would that cause it to be low and also it is 8 not 6 I ment #8. But still is that to small and would it cause that. Im not worried really because it runs and drives great with no prob and sounds great no noise but I had a guy come look at it to buy it and he thought it was to low and did not buy it only for that reason only. Hell I even dropped our agread price 2k right there just incase there was a prob and 2k would cover it. But its brand new and I just want other oppinions

    Thanks.

  8. #8
    Senior Member RACING JUNKIE lively's Avatar
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    LOW OIL PRESSURE AT IDLE ON MOST CHEVIES IS NOT A PROBLEM JUST AS LONG AS 35-40 POUNDS IS ACHEIVED AT CRUISING SPEED--AND IT DOESN'T FALL OFF ABOVE THAT--MY SBF RUNS 15- 20 AT IDLE AND 40-50- AT CRUISING SPEED AND I HAVE OVER 100,000 MILES ON IT WITH NO PROBLEM--GOOD LUCK AND HOPE YOU GET IT SOLD AND IT WAS GREAT YOU WERE HONEST WITH THAT BUYER 8) :lol:

  9. #9
    If the engines new I would definitely change the oil filter as this may be the cause of your low pressure. :!:

  10. #10
    Senior Member RACING JUNKIE TheYellaBrick's Avatar
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    Quote Originally Posted by mopar1962
    If the engines new I would definitely change the oil filter as this may be the cause of your low pressure. :!:
    If it's a Fram, loose it and get a Wix ! 10 lbs per 1000 RPM is a good general rule.
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