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518 Overdrive
#629756
03/03/10 03:56 PM
03/03/10 03:56 PM
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Joined: Jun 2008
Posts: 251 Lithonia, Ga
36PLYM
OP
enthusiast
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OP
enthusiast
Joined: Jun 2008
Posts: 251
Lithonia, Ga
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518 owners, What would be the average speed the OD would engage? Assuming flat grade and a nice even throttle. I am trying to establish some starting point to set my pressure switches and vacuum switch. I have a 95 518, using two pressure switches for OD and lock up and vacuum switch to disengage for acceleration. Thanks!
36 Plymouth Coupe 318 w/360 heads 518 trans 8 3/4 rear Ga. Tech BCE'78
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Re: 518 Overdrive
[Re: 36PLYM]
#629757
03/04/10 09:00 AM
03/04/10 09:00 AM
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Joined: Jan 2003
Posts: 16,123 Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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~40 & 45 mph is what my dad's rams engaged OD & lockup (not necessarily in that order, not sure which occured first)
1976 Spinnaker White Plymouth Duster, /6 A833OD 1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!*** 2011 Toxic Orange Dodge Charger R/T 2017 Grand Cherokee Overland 2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: 518 Overdrive
[Re: patrick]
#629758
03/06/10 04:42 PM
03/06/10 04:42 PM
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Joined: Sep 2005
Posts: 12,481 Chino Valley
RodStRace
I Live Here
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I Live Here
Joined: Sep 2005
Posts: 12,481
Chino Valley
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My 94 diesel with I guess is a 46RH locks up at ~45 MPH. It's annoying, because that's the limit here on the highway, and it will hunt unlees it's on cruise. OD is higher, around 55- 60. BTW, it won't start right now https://board.moparts.org/ubbthreads/show...e=0#Post5848874I haven't got the 1940 running yet, it has a 518. The factory manual might have that info, but I don't have one here.
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Re: 518 Overdrive
[Re: RodStRace]
#629759
03/06/10 09:02 PM
03/06/10 09:02 PM
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Joined: Jun 2008
Posts: 251 Lithonia, Ga
36PLYM
OP
enthusiast
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OP
enthusiast
Joined: Jun 2008
Posts: 251
Lithonia, Ga
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I thought it went into overdrive first and then locked up? Or is this a chicken and the egg question?
36 Plymouth Coupe 318 w/360 heads 518 trans 8 3/4 rear Ga. Tech BCE'78
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