oil weight question

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Apr 28, 2012 | 10:22 PM

Double J

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From: Florida

oil weight question

Best oil for LS3 418 Stroker, big cam, high compression?? 30W, 40W or 5OW. I live in Florida, if that makes a difference as far as temps.

THANKS IN ADVANCE

Apr 28, 2012 | 11:59 PM

427 zeo6

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Your oil choice is going to be affected by your bearing clearances and oil system. What are your figures? Stock clearances would stay with 10/30 or 10/40WT oil.

Apr 29, 2012 | 12:25 AM

fastazzls1

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agree clearances are the main factor do you have a build sheet
of what the lower end clearances are

Apr 29, 2012 | 11:47 AM

Double J

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The motor was completed several months ago and the engine builders-Arvil &Chris Fowler of XTREME HP in Texas are out of business. They never sent the build sheet.

Apr 29, 2012 | 11:53 AM

Double J

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The motor was completed several months ago and the engine builders-Arvil &Chris Fowler of XTREME HP in Texas are out of business. They never sent the build sheet. What I was trying to say before server failed, they recommended 10W30 Mobil 1 syn , but my sources tell me syn not good for break in motor. I don't know if they used break in oil then changed to Mobil 1. I going to put Brad Penn Racing oil in ASAP. But I can't get in touch with them to confirm.(another story)

Thanks

Last edited by Double J; Apr 29, 2012 at 12:45 PM.

Apr 29, 2012 | 11:43 PM

fastazzls1

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i would think i would follow what the engine builders recommend i mean gm breaks all there engines in with mobil 1 they are factory filled with it but when it comes down to it its your choice i have used pennzoil forever and never had a problem with it