Quote:
Originally Posted by DScott600
Oh and in response to John Boothby I'm sure that running without the secondaries would effect emissions. Marc told me that the main reason GM did the secondaries is for emissions. But I'm sure the experts may chime in on this one.
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Could have been for gas guzzler tax with the drive cycle performed using primary runners only. 2nd Gen LT-5 was eliminating secondaries.