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Mach 1
F1A 8-rib Build Thread
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<blockquote data-quote="speedofsound" data-source="post: 9293777" data-attributes="member: 33243"><p><strong>*** UPDATE ***</strong></p><p></p><p>I contacted Procharger about my chirp issue and they suggested looking at the crank pulley. They explained that a Ford crank pulley has a cast center section, rubber ring around that, and steel where the belt rides on. They have seen/heard of cases where the steel part and the rubber slip, thus causing the crank pulley to wobble slightly. :shrug: </p><p></p><p>If this is really my problem, I'm stepping up to an IW 10%OD and a 3.9 pulley or something ...shoot for 650+whp and calling it a day with this thing.</p></blockquote><p></p>
[QUOTE="speedofsound, post: 9293777, member: 33243"] [B]*** UPDATE ***[/B] I contacted Procharger about my chirp issue and they suggested looking at the crank pulley. They explained that a Ford crank pulley has a cast center section, rubber ring around that, and steel where the belt rides on. They have seen/heard of cases where the steel part and the rubber slip, thus causing the crank pulley to wobble slightly. :shrug: If this is really my problem, I'm stepping up to an IW 10%OD and a 3.9 pulley or something ...shoot for 650+whp and calling it a day with this thing. [/QUOTE]
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