Quote:
Originally Posted by Frank Miller
True I do not need to but just want to make sure all is well. Highways around here can be brutal. My commute to work frequently has me being tailgated at 80 in my modern car. Yes it is in Overdrive. Just want to make sure it is running ok. Vic, the overdrive works good. I have 3:78 gears which is the standard transmission set. OD had 4:11. I am getting a true 30% overdrive.
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My 40 Tonner is running 4.11's behind a 49 Merc O/D trans with a slightly warmed up 239 engine. It will run at 70MPH all day without breathing too hard. To get there I removed the bias-ply tires and installed Michelin LT Radials on radial rims. Like others have said stopping is the Trick!! That's where the rubber really meets the road. As you know in O/D you lose the braking assistance engine compression provides. Not a real good feeling when the kamikaze drivers are zinging into your braking zone.