Here's what a racer posted over on corvetteforums.com
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"Quote:
Originally Posted by
RAFTRACER 
Dry-sump systems in T1. The dry-sump thing is the wierdest, fundementally the oiling systems are the same from 97-current barring the LS7. Dont know why a handful of LS3's are blowing up majoritily all prepared by the same people. I have two customers with LS3's that wail on their cars on roadcourses for long periods and no oil starvations yet......They both have certainly lived longer than a couple of initial laps before starting to have issues. They both however have no accusumps and LS7 oil coolers as the only oiling system mods. The pans are the same between LS2's and 3's I believe.
Just to correct a few small errors... I think I was the first one to run an LS3 in race trim. It was the bone stock LS3 with 1000 easy street miles...just tuned to 93 octane. We did nothing else to the engine. It lasted 2 laps at Sebring.
The next crate LS3 lasted a few more laps than that at Roebling before it went. GM went to work immediately and modified the oil pan to look like an LS6 (bat-wing) pan. It seemed to work...but we still saw pressure drop outs.
Mike McGinley put the pan on his car and ran it and had no issues. Neither of us were using accusumps...I don't think he had one.
At the runoffs, Mike Tracy Jr. and Sr. both had LS3 engines in new 2008 vettes. Both were using the new oil pans. The Tracy's build their own cars...not from any shop but their own and their engines were bone stock. Tracy Jr blew up his LS3 testing at Heartland park, so the dad let him drive his in the race. The dad went and got his C5 to race. This time, they put the accusump on as well and it lasted about 14 laps at HPT. Mine managed to last the whole race, but on lap 14, the data showed pressure drops below the GM recommended level. I'm not sure it would have completed the race had the full course caution not come out.
According to the engineers, these stock engines (with stock pans) were apparently designed to handle about 1.1 or 1.2 Gs before suffering bearing starvation. But, we routinely see 1.5 to 1.6 in T1 trim. The drop-outs occur during long left hand turns at high G forces. Unless they are running HPT or Daytona, Charlotte, Homestead, etc, your guys probably aren't seeing sustained left turns. And depending on how good they are, may not be going fast enough to sustain the G forces either.
Trust me on this one though, after what I've seen, a dry sump (of some type) is necessary...'cause I ain't buying another engine! I hope that clears up some of the questions. "
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Like I said, if this car is being built for the street then it looks great!
