Quote:
Originally Posted by steves1967
My 71 C20 has a Dana 60 in it from the factory. the rearend has never been out of the truck.
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Steve,
What gear ratio is your rear end?
What transmission do you have in your truck?
I have 4:11 gears with a 3 speed automatic. I don't have a tach, but the engine is running fairly high rpms at 70mph. My guess is over 3000rpm.
John H.