Maybe the low idle speed adds to the effect?
I had the idle in gear tuned to 625 RPM in my LQ4. It has a baby cam, 202/216 on a 112. It loped enough to make people look around in traffic trying to figure where it was coming from.
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1972 SS 454 Chevelle LS5/M21/12 bolt 3.73 posi
1969 Malibu COPO L72/M20/12 bolt 3.31 posi
1968 Malibu LQ9/4L80E/12 bolt 3.73 posi
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