Car is an twin turboed 72 El Camino with a stock 2003 LS1, TH 400, 2.73 rear.
In the log below it`s sometimes knocking sometimes not. All pulls are 2`nd gear. AFR is at the high 11 range. Fuel pressure is nailed at 60 psi all day long.
It doesn`t look like the knocking is hurting performance (or the engine) but i would really like to know what is happening here.
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