08-01-2005, 03:28 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
Variable Duration Lifters
Has anyone had experience with variable duration lifters (aka Rhodes)?
I have been wondering if using this lifter in an engine with a big cam would tame it enough at idle to decrease emissions.
I have a 418W with a Comp Cams 268H and failed my emissions test miserably (HC idle). My 2500 speed HC and carbon monoxide numbers were really clean as was the idle carbon monoxide. I only failed the idle HC.
I appreciate any input or ideas as I would like to be "Clean" but do not want to replace the cam.
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Terry
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