Oil weight?
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Oil weight?

  1. #1
    Senior Member Ronboats's Avatar
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    Default Oil weight?

    I have a 468 bbc with dual 750s. tunnle ram. vertex mag. pretty mild cam. Supposed to be 10 to 1 comp. What is a good weight /type oil to use?

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    Senior Member EVILFORCE's Avatar
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    I use Amsoil 15-40
    No Fool Like A Old Fool is there?

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    Senior Member steveo143's Avatar
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    Quote Originally Posted by EVILFORCE View Post
    I use Amsoil 15-40
    X2 Good stuff. Mobil 1 good too!
    steveo143 AKA DiMarco 21 II



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    E-7 Sheepdog (ret) SmokinLowriderSS's Avatar
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    Quote Originally Posted by Ronboats View Post
    I have a 468 bbc with dual 750s. tunnle ram. vertex mag. pretty mild cam. Supposed to be 10 to 1 comp. What is a good weight /type oil to use?
    Oh lord.

    You are now going to get recomendations for everything from the 10w-50 Synthetic I run, to straight 50-weight dyno, or synthetic, laced with Lucas thickener, and GM's EOS additive.

    You may also be told to run a remote filter, and not to, to run a huge oil pan and high volume oil pump, and not to do either.

    Bottom line, run whatever the heck you want, and change every so often.

    If you run a thick, single weight oil, with or without a bunch of additives, you get to idle a long time to insure it is hot and circulating the molasses before romping the throttle.
    A thinner oil, not nearly so much.

    Anything that maintains generally 10psi per 1000 rpm running, is plenty thick, and being fed at plenty of volume.

    I run 23psi hot @ idle, 58psi flat out, for miles. 40+ psi hot at any rpm over about 2,000. 50+psi cold idle.
    Moderately modded hyd. cammed Chevy, stock volume pump, 6 qts oil, K&N 2-quart filter on the block, 10w-50 Castrol Syntech.
    5400RPM off the nitrous.
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    Senior Member Factory1's Avatar
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    What type of cam, flat tappet or roller?

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    Senior Member Ronboats's Avatar
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    Quote Originally Posted by Factory1 View Post
    What type of cam, flat tappet or roller?
    It's a flat tappet

  9. #7
    Is it Summer Yet?! SoCalKev's Avatar
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    Cool

    I run 20/50 Full Synthetic and Have 60+ Cold at idle to 70 at 3000 rpm

    Couple hours later I get about 40 psi at Idle.

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    i run 15/40 rot but i have a dominator carb so may not work for you. just pulling your leg.

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    Quote Originally Posted by Ronboats View Post
    I have a 468 bbc with dual 750s. tunnle ram. vertex mag. pretty mild cam. Supposed to be 10 to 1 comp. What is a good weight /type oil to use?

    Those questions/comment can start quite a.......ummmmmm.....debate?!?!?!


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    I know after the Navy spent our tax money testing oil for the Seal fast attack boats (605 BBC engines ran at 5200 rpm for 24 hours straight) that Mobil 1 15-40 came out on top for HYD ROLLER CAM ENGINES.
    Chris Straub
    Straub Technologies

    3HP is an A$$ Whooping!!! JW

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    gn7
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    Quote Originally Posted by cstraub View Post
    I know after the Navy spent our tax money testing oil for the Seal fast attack boats (605 BBC engines ran at 5200 rpm for 24 hours straight) that Mobil 1 15-40 came out on top for HYD ROLLER CAM ENGINES.
    Yeah but Chris, lets be totally honest here. The was Navy procured Mobil 1. The stuff runs like $250.00 a qt.



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    Quote Originally Posted by gn7 View Post
    Yeah but Chris, lets be totally honest here. The was Navy procured Mobil 1. The stuff runs like $250.00 a qt.
    Not to mention the $5000.00 plastic funnel!

    But then again, how else can they pay for area 51 and the storage of alien crafts without people finding out about it?

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    Senior Member Widetrack's Avatar
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    Quote Originally Posted by gn7 View Post
    Yeah but Chris, lets be totally honest here. The was Navy procured Mobil 1. The stuff runs like $250.00 a qt.
    Dang that would be 2500.00 + filter per change! Now we know why we are in this shape! J/K, I run 15-50 Syn. NAPA that is Valvoline relabled and cheaper! WT
    Last edited by Widetrack; 10-22-2009 at 09:59 AM.


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  16. #14
    Senior Member hotbo's Avatar
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    mobil 1 15-50syn in all our HP mills.best of luck

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