Originally Posted by Old Country

Anyone who knows anything about performance engines KNOWs a high capacity Dry Sump system with its standard high volume pump, is a vastly superior oil system to the standard wet sump 6 qt system. AND anyone who'd take their C6 Vette to a Jiffy Lube type place shouldn't have shut a car. A good lubricating system is the key to survival for any hi-pro hi-rev'n engine and having +10 qts is pure gold for heat dissipation and lubricity longevity. Most experienced trackers keep them at 9.5 to 10 qts, which is plenty and much better then possibly over servicing it passed 10.5 qts (bad!).

Yes - All LS3s in a C6 GS M6 have Forged crank shafts. The LS3 bottom end is rock solid, with countless blower builds seeing +800 rwhp. And no, not all have the dry sump, and yea they survive just fine, although their oil is pretty chewed up in 2K-3K miles vs a 10.5 qt system.

Also remember; Oil FLOW is more important than oil pressure. Thus using 20w-50 racing oil is fine in a race engine where bearing clearances are more open vs the tight tolerance LS3. And all of this commentary isn't absolute, but preferred. You can run 20w-50 oil and see amazing oil pressure, but it's flowing more like sticky honey... not good.

All just my opinion in an effort to help out, and not trying to burn anyone or sound like a know it all....