100+ unleaded or 91?
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
If you were mph'ing 106-107 before and you're mph'ing 106-107 now, your engine isn't making 1 more hp. Your driving is better whether you know it or not.
12.3x's on a 107 trap is pretty good. I don't se you hitting 11's until you make some more hp.
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
Mine are 6000 on the dot, but that is irrelivant, since I've got a stock C6 w/the LS2 engine.
What WAS relivant was that I'm running faster and quicker that others w/the exact same car, due to my shift RPM.
THEREFORE, I'm suggesting that you likely ran quicker (not faster) due to changes in driving (such as shift points) or something else. Your trap proves that neither your engine nor the gasoline it was running on was doing a thing for you.
What WAS relivant was that I'm running faster and quicker that others w/the exact same car, due to my shift RPM.
THEREFORE, I'm suggesting that you likely ran quicker (not faster) due to changes in driving (such as shift points) or something else. Your trap proves that neither your engine nor the gasoline it was running on was doing a thing for you.
Melting Slicks
Joined: Jan 2002
Posts: 2,238
Likes: 4
From: Milan
Some of you might recall I put a SR induction 406 in my 1988 700R, PeteK converter, 3.07 gear about a year ago. The darned thing never ran as well as many forum member's cars.
The best I ever got was a couple passes in the high 12.70's, but mostly 12.90's, all with 1.9-oh 60-footers(all deep staging). All on 100+ octane.
Two weekends ago I entered the car in the local drags but had forgotten to get the 100+. The corrected air was horrible, it was 105 degrees and I thought," Oh crap, hope I do not get detonation" and ran it on 91 octane pump gas.
Long story short, I made a 12.61 pass followed by 2 back to back 12.55 passes and one 12.48! I was astounded!
Last Sat night I wanted to try the pump gas again. The night was cool, 65 degrees, and I entered it in the street drags, again on 91 octane. I shallow staged for the best ET and here it is:
12.38 at 109, 60-footed 1.71
12.33 at 109, 1.75
12.28 at 110, 1.74
12.27 at 110, 1.73
Best of all, on the last pass, I got to spank a 2008 Corvette who's owner had been crowing all evening. New tech vs. old tech! But I digress.
Does the octane/performance change make sense to you? I am running 10.2 compression. Outside of a spark plug change, same heat range, prior to the 12.55 passes, no other changes. I am a happy boy!
The best I ever got was a couple passes in the high 12.70's, but mostly 12.90's, all with 1.9-oh 60-footers(all deep staging). All on 100+ octane.Two weekends ago I entered the car in the local drags but had forgotten to get the 100+. The corrected air was horrible, it was 105 degrees and I thought," Oh crap, hope I do not get detonation" and ran it on 91 octane pump gas.
Long story short, I made a 12.61 pass followed by 2 back to back 12.55 passes and one 12.48! I was astounded!
Last Sat night I wanted to try the pump gas again. The night was cool, 65 degrees, and I entered it in the street drags, again on 91 octane. I shallow staged for the best ET and here it is:
12.38 at 109, 60-footed 1.71
12.33 at 109, 1.75
12.28 at 110, 1.74
12.27 at 110, 1.73
Best of all, on the last pass, I got to spank a 2008 Corvette who's owner had been crowing all evening. New tech vs. old tech! But I digress.
Does the octane/performance change make sense to you? I am running 10.2 compression. Outside of a spark plug change, same heat range, prior to the 12.55 passes, no other changes. I am a happy boy!
0" from the starting line(deep) and 16"(shallow) from the starting line can worth 4 tenth.
Let me know if I'm completely wrong...
-Beppe-
