Sinnful Posted November 30, 2009 Report Share Posted November 30, 2009 hey truck folks, Ok I was wundering what is a popular gear to run in the 620 rearends? do people like 4.10's and lower? Quote Link to comment
datzenmike Posted November 30, 2009 Report Share Posted November 30, 2009 Stock 4.375 works for most trucks with over drive. You could go 3.364 but with only an L20B it probably couldn't push through a head wind on the highway. 4.11 is do-able as would be 3.889 maybe down to 3.70 if never carrying anything. Quote Link to comment
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