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07-16-2014, 02:02 PM
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#26 |
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Registered User
Join Date: Jan 2011
Location: Townsend MT
Posts: 1,725
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Re: 1969 gmc 4x4 1500 deluxe
If you ignore the tranny slipping, to be turning 3500 RPM @ 55 with 33's you have to have around 6.2:1 gears.
http://www.summitracing.com/expertad...tio-calculator Is your tranny shifting into third? Have you verified your tach and/or speedometer? Second gear is 1.52:1. 6.2 divided by 1.52 is 4.07 - very close to 4.10's. You may need to look at your transmission. |
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