05-04-2004, 08:57 PM
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CC Member
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Join Date: Oct 2003
Location: Saratoga Springs,
UT
Cobra Make, Engine: Shell Valley, 418W, tremec 3550tko, 9" ford rear, 3.0 gear, silver/black
Posts: 408
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Not Ranked
emissions test completed
I got through my 2nd emissions test today and passed 3 out of four categories. My 418 failed the idle HC ppm miserably. The cam is very radical and i am wondering if anyone has suggestions on how to lower my idle HC? I have drilled a 3/32 hole in each of the primary butterflies on my holley 750 DP. Would changing the power valve to a lower number help?
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Terry
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