[CobraEd]

there is no direct correlation between a nice Cobra like lumpy idle and overall loudness. The lumpy idle comes from the camshaft characteristics and the loudness comes primarily from the mufflers (although a really strong motor with high compression is generally louder than a mild motor)

So, get a SBF with a radical cam and keep the mufflers in the tame range and you can have what you want.


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