Posted by Galen [69.35.200.126] on Tuesday, February 17, 2015 at 10:57:04 :
In Reply to: 1966 wm300 rpm posted by E Rushing [162.206.150.205] on Tuesday, February 17, 2015 at 09:22:39 :
I have 4.89's in my truck with a 251 (not original) and I find that I shift more often but otherwise ample speed- my spedo is not hooked up and is uncalibrated to the new gears. I am cognizant of over revving the motor and contemplated adding a tachometer otherwise I go by ear.
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