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W.O.T knock!

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Old Aug 12, 2012 | 01:06 PM
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Default W.O.T knock!
Yesterday I was having my 06 SS tuned. everything was doing well, trans, DOD delete, top speed gov delete (yes it was set at 140 from the factory). As I said everything was going well until driving it and tuning to find that there was a knock 1-8 cyls at W.O.T at high speeds. Around town, part throttle, half throttle, etc was no knock just at W.O.T. The knock went as high as 7 degrees then drop off to 4 degrees or less. I run 93 octane. the car has 79,000 on it and I still have the original spark plugs in it. (I had the car for a year, brought it used and didnt get around to the plugs yet.) The car drives great and very strong but cant do any more to it tuning wise until I figure out the knock issue. Help would be appreciated.
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Old Aug 12, 2012 | 01:47 PM
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The first thing I would try is some new plugs and wires since they are original.
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Old Aug 12, 2012 | 07:13 PM
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plugs plugs plugs see my thread about plugs were both around the same mileage, however i still get some knock now only at around 5500 and up but i suspect that to be caused by now wobbly harmonic balancer..
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Old Aug 13, 2012 | 12:24 PM
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I figured as much it was the plugs. Should I stay stock or get something different?
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Old Aug 13, 2012 | 02:15 PM
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diffrent go with NGK tr6 iridiums if possible however im running autolite xp103's which are a equvilent
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Old Aug 14, 2012 | 12:49 PM
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Pull some timing out of it and keep tuning? It is pretty hot if you're anywhere in the southern US right now.
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Old Aug 14, 2012 | 01:35 PM
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BTW i would only go with the MSD wires ini this case they offer the LOWEST resistance besides Granetelli. search if you dont believe me
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Old Aug 14, 2012 | 05:30 PM
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How much timing are you trying to run? Are you running ethanol or "real" gas? Could be running lean also.
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Old Aug 14, 2012 | 07:43 PM
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Since I am in the northeast I am running 93 octane. (lucky me) It was kinda hot that day. I didnt get to do any timing because of the wot knock. I did everything else though.
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Old Aug 14, 2012 | 08:27 PM
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Originally Posted by 91parkave
diffrent go with NGK tr6 iridiums if possible however im running autolite xp103's which are a equvilent
Agreed!!
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Old Aug 14, 2012 | 08:49 PM
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Originally Posted by bigboymike68
I didnt get to do any timing because of the wot knock.
Why not? Was it an audible knock, or you just saw a few degrees on the scanner? These cars are pretty aggressive stock. If just a few degrees on the scanner, I'd say you should've just pulled a little timing where it was retarding it and go from there.
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Old Aug 15, 2012 | 07:49 PM
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I had tons of KR datalogging my stock tune. . . .
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Old Aug 16, 2012 | 05:53 AM
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Yes, the stock tune is very aggressive. At least for the gas that is out now.
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Old Aug 18, 2012 | 01:50 PM
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Yeah it was only a few degrees of knock. Between 4 to 7 degrees on the computer. No audible knock at all.
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Old Aug 26, 2012 | 06:21 PM
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Also what wires are you guys using for our cars. MSD and Granatelli doesn't show that they have kits for our cars.
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Old Aug 26, 2012 | 07:38 PM
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Stock. They are like 4" long.
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