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04-26-2010, 08:53 AM
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Registered User
Join Date: Jul 2008
Location: germantown wi
Posts: 40
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3400 rpms on a GMC 228 sound right ?
On the web site old GMC trucks I've found my truck should have 3400 rpm with the original 228 in it . Does this sound right ? next thing is I want to hook up a tach but dont know what to get since I've got the original wiring 6 volt positive ground system. Any help would be great !! thanks
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