LS9 Main Bearings
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LS9 Main Bearings
Hot Rod magazine July '08 issue, page 92 shows a photo of the crankcase of the LS9. This photo shows different main caps than the LS1, LS2, LS6, LS7 and LS3. No more horizontal bolts? A 4 bolt main instead of the 6 bolt? the text claims 20% stronger in the main bearing webs and also claims ALL 6.2L (LS3?) will be upgraded to this block casting for '09.
If anybody can find a link to this article/photos I would appreciate it, I've searched and can't find a link. Thanks
EDIT; Found some better photos, check my post #3
If anybody can find a link to this article/photos I would appreciate it, I've searched and can't find a link. Thanks
EDIT; Found some better photos, check my post #3
Last edited by haljensen; Jun 25, 2008 at 01:27 PM.
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I believe 4 bolt mains are favored for FI applications because you have a stronger cap. Making all engines the same would make sense from a production standpoint, BUT, I would not assume that future NA "LS3" blocks would have the same quality fasteners and caps that they would use in the supercharged motors, since that would be an area they could save up to $50 in production costs on.
However, this is just conjecture on my part.
However, this is just conjecture on my part.
Thread Starter
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Joined: Mar 2005
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From: Austin Texas
Further searching found some better photos; the LS9 IS STILL a 6 BOLT Main. I wonder where the "20% stronger" comes from?
http://superchevy.automotive.com/517...omponents.html
http://superchevy.automotive.com/517...omponents.html
Last edited by haljensen; Jun 25, 2008 at 01:24 PM.
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