Should I put it in overdrive for a dyno pull?

Topic: Should I put it in overdrive for a dyno pull? (Read 2766 times) previous topic - next topic

Should I put it in overdrive for a dyno pull?

Reply #15 – October 01, 2007, 01:55:04 PM

If all AOD's were like the later 4R70W's, then yes, we could safely keep the car in OD all the time without much worry. But the whole AOD design and its notoriously weak OD band is the reason that I advocate keeping the car in D all the time, unless you are going to be on the freeway or are going over 45mph for at least 5 minutes. This is a tried-and-true method that will save your overdrive band (at least, delay the inevitable rebuild).

I drive in what you can consider "city" traffic to work. It's 3.4 miles one way. The longest stretch of open road without turning or a stop sign is 1 mile. My top speed is usually 35-40mph. Then there's the steep hill (down, going to work and up, coming home). So there is absolutely no reason why I need overdrive on the daily commute. I'm with Claude...OD is locked out in the Mountaineer also. It's a habit that carried over from the Cougars to the truck, and I feel safer running the truck that way also. And it even has the towing package, with the external oil and trans coolers.

The OD lockout just makes good sense. Use OD gear only when you need it, and you'll be okay.

Should I put it in overdrive for a dyno pull?

Reply #16 – October 01, 2007, 04:06:36 PM

or get a 4R70W

Should I put it in overdrive for a dyno pull?

Reply #17 – October 01, 2007, 05:12:25 PM

Quote from: daboss351;180032

or get a 4R70W

Easier said than done. Electronic controllers for those things are pricey.

Should I put it in overdrive for a dyno pull?

Reply #18 – October 01, 2007, 05:40:44 PM

4r70w's seem to be very long lasting...the one in my 94' tbird has 204,000 on it and it still shifts strong. of course the trans cooler i installed is helping. It does chatter in reverse though.