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ahale2772 wrote:you dont have 4.10's front and back? ...be carefull with that
I might think of anintercooler for your 89 it would cool down your towing temps and you can keep the 4.10's
dazedandconfused wrote:Well 4.10's running a 727 and 40" tires should run 2365RPM's at 65. A truck running 3.55's and a 727 should cruise at 2582RPM on stock 235's. I think you will be ok.
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