Re: 518 with two pressure switches setup question?
[Re: hemibeep]
#946948
03/09/11 11:41 AM
03/09/11 11:41 AM
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Joined: Nov 2006
Posts: 2,256
IL
furious70
top fuel
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top fuel
Joined: Nov 2006
Posts: 2,256
IL
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My a500 conversion stays locked up until it downshifts, it does not come out of lockup coasting or hitting the brakes like OEM.
70 Sport Fury
68 Charger
69 Coronet
72 RR
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Re: 518 with two pressure switches setup question?
[Re: 1_WILD_RT]
#946950
03/09/11 12:57 PM
03/09/11 12:57 PM
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Joined: Nov 2006
Posts: 2,256
IL
furious70
top fuel
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top fuel
Joined: Nov 2006
Posts: 2,256
IL
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I agree, my 2 adjustable psi switches for upshift and hobbs switch for kickdown don't give it complete OEM functionality, but for me going the additional steps you took were more work/money then I saw benefit in for a non-daily driver.
70 Sport Fury
68 Charger
69 Coronet
72 RR
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Re: 518 with two pressure switches setup question?
[Re: 1_WILD_RT]
#946952
03/09/11 02:40 PM
03/09/11 02:40 PM
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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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dunno, I'm using a GM NO vacuum switch hooked to manifold vacuum on the ground leg, and IIRC a 38 & 45 PSI switch on the LU and OD. mine locks up ~ 25mph and unlocks at the same, and OD kicks on at ~37mph and unlocks at the same (using 3.55 gears with 27" tires). I installed a trans go TF-OD kit, don't know if that messed around with governor pressures at all.
best bet, try find some higher PSI switches, at least for OD, something like 60-65psi?
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 with two pressure switches setup question?
[Re: patrick]
#946953
03/09/11 03:05 PM
03/09/11 03:05 PM
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Joined: Aug 2007
Posts: 1,513
AZ
Mike P
pro stock
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pro stock
Joined: Aug 2007
Posts: 1,513
AZ
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Please keep us posted on what you come up with, I'm going to be going this route with a 4.56 gear and 28" tall tire and was wondering about the pressure switches.
1957 Plymouth (Hemi, Dual Quads, A833 4 Speed 9 1/4 w 4.10) Sold
1937 Dodge Pickup (Hemi, 6X2 intake, 46RH, Dana 60 w 4.56) Sold
1968 Plymouth Valiant 2dr sedan (354 HEMI, 46RH w/4.30 gears) under construction
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Re: 518 with two pressure switches setup question?
[Re: patrick]
#946954
03/09/11 04:48 PM
03/09/11 04:48 PM
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Joined: Jan 2003
Posts: 75,071
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,071
U.S.S.A.
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Quote:
dunno, I'm using a GM NO vacuum switch hooked to manifold vacuum on the ground leg, and IIRC a 38 & 45 PSI switch on the LU and OD. mine locks up ~ 25mph and unlocks at the same, and OD kicks on at ~37mph and unlocks at the same (using 3.55 gears with 27" tires).
How is that in your application?
I didn't like how my 1998 1500 drove with lockup and OD coming in under 40mph ? The 78 Lebaron with a 318 was even worse ....
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Re: 518 with two pressure switches setup question?
[Re: JohnRR]
#946955
03/09/11 06:26 PM
03/09/11 06:26 PM
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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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those upshift/lockup points are happier with my mag headed/hyd. roller cammed 318 than my comp XE262 equipped 360
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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I was building it for someone else & since the guy that was supposed to drive it isn't a car guy I wanted it to be able to think for him... Turns out the car was finished in 04 & probably hasn't travelled 1000 miles since 05... 
