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Old 02-16-2017, 08:16 PM   #1
Ruffin
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Join Date: Feb 2017
Location: Millport Al
Posts: 42
Ratio question

I just got a 71 C10 that was used by Mississippi Game and Fish Dept.
It was originally a 6cyl 3speed but was swapped to a v8. When I'm drive at 55mph the tach reads 3000rpms. Would this be 373 0r 411 gears? My Spid has posi on it but no gear ratio....
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