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Old 02-21-2011, 02:55 PM   #11 (permalink)
Backtobasics
EcoModding Apprentice
 
Join Date: Aug 2008
Location: Kc KS
Posts: 148

Dart Lite - '76 Dodge Dart Dart Lite
90 day: 18.34 mpg (US)

Beater..with a Heater - '94 Isuzu Rodeo LS
90 day: 16.19 mpg (US)
Thanks: 4
Thanked 7 Times in 5 Posts
Quote:
Originally Posted by comptiger5000 View Post
True. Whether or not the TCC allows it to lug depends on hwo aggressive the lockup programming is. In my Jeep's case, it's RPM dependent, not mph dependent, but it will let it lug down to 1050 rpm in OD with the TC locked.

Regarding Backtobasics' comment, my Jeep seems to do best around 45 - 55 mph, with only a slight drop up to 60 or down to 40. The TCC locks around 36 - 40 mph. For reference, I've got a 360 (although with a slightly different cam and more advanced timing than his), 46RE auto and 3.73s.
I should clarify that I have the 5 speed manual. 5th at 50-60 is under the happy power band, and it takes more throttle to maintain speed or accelerate. 62-65 is the magic place for my particular application.

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