Re: Four Speed Overdrive Automatic
[Re: IMGTX]
#2390531
10/20/17 10:15 PM
10/20/17 10:15 PM
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Joined: Jan 2003
Posts: 10,943 North Dakota
6PakBee
OP
I Live Here
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OP
I Live Here
Joined: Jan 2003
Posts: 10,943
North Dakota
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This is the rest of the idea. I mocked up a paper crossmember that I later transferred to CAD and had laser cut. I folded it and welded it up. Fits good and the loop from bolts to bolts is seamless like the OEM so no fear of a weld breaking and the tranny falling out. That is slick!
"We live in a time when intelligent people are being silenced so that stupid people won't be offended".
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Re: Four Speed Overdrive Automatic
[Re: IMGTX]
#2390561
10/20/17 10:52 PM
10/20/17 10:52 PM
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Joined: Mar 2011
Posts: 3,178 Michigan
A727Tflite
master
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master
Joined: Mar 2011
Posts: 3,178
Michigan
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IMGTX- Did the engine remain at the normal angle or did you have to lower it in order to have the overdrive unit miss the floor board?
Last edited by Transman; 10/20/17 10:53 PM.
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Re: Four Speed Overdrive Automatic
[Re: John_Kunkel]
#2390694
10/21/17 07:12 AM
10/21/17 07:12 AM
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Joined: Jul 2007
Posts: 732 eastern,Ky
70RT Charger
super stock
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super stock
Joined: Jul 2007
Posts: 732
eastern,Ky
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One day when I get off of my ass, I want to get one of those A41 4 speed kits from Silver Sport. They are based on the GM 700R4.
Wise decision, the 700R4 is superior in all the areas discussed. I like a 200-4R better but leave the Automatics to the women drivers
Last edited by 70RT Charger; 10/21/17 07:13 AM.
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Re: Four Speed Overdrive Automatic
[Re: 70RT Charger]
#2390867
10/21/17 03:27 PM
10/21/17 03:27 PM
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Joined: Aug 2012
Posts: 1,574 Lakeland FL
floridian
pro stock
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pro stock
Joined: Aug 2012
Posts: 1,574
Lakeland FL
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One day when I get off of my ass, I want to get one of those A41 4 speed kits from Silver Sport. They are based on the GM 700R4.
Wise decision, the 700R4 is superior in all the areas discussed. I like a 200-4R better but leave the Automatics to the women drivers My understanding is the 200 is based off the Turbo 350, while the 700 is based off the Turbo 400....
Last edited by floridian; 10/21/17 04:34 PM.
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Re: Four Speed Overdrive Automatic
[Re: Kern Dog]
#2391068
10/22/17 03:37 AM
10/22/17 03:37 AM
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Joined: Jan 2005
Posts: 3,699 Newport, Mi
Evil Spirit
master
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master
Joined: Jan 2005
Posts: 3,699
Newport, Mi
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The 904 evolved into the 500 which was later renamed the 42RH. The 727->518->46RH. 1996+ went to the RE models which are useless to you so make sure you don't get one of those.
I have read others who went to the GM 4 speed autos for better/cheaper aftermarket support and a smaller physical size to not have to cut. One day when I get off of my ass, I want to get one of those A41 4 speed kits from Silver Sport. They are based on the GM 700R4. Personally I prefer the driveability of a 200R4 over a 700R4 all day long, especially in a DD with a tight converter. The big 1-2 ratio drop on the 700R4 really can lug the motor down. I guess it depends on how picky you are on that sort of thing. And fitment is also usually better on the 200R4.
Free advice and worth every penny... Factory trained Slinky rewinder.........
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Re: Four Speed Overdrive Automatic
[Re: A727Tflite]
#2391081
10/22/17 07:05 AM
10/22/17 07:05 AM
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Joined: Jan 2003
Posts: 3,575 The Netherlands
BigBlockMopar
master
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master
Joined: Jan 2003
Posts: 3,575
The Netherlands
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IMGTX- Did the engine remain at the normal angle or did you have to lower it in order to have the overdrive unit miss the floor board? On A-bodies this is indeed what's happening, not sure on other models. I had to pound 'create' some extra space in the tunnel from beneath so the trans sat a bit higher on my '73 Dart. I chose the easy way out, but it would be best to just cut open the tunnel, position the transmission properly, and then reweld and form the tunnel back around the transmission/overdrive flange.
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Re: Four Speed Overdrive Automatic
[Re: John_Kunkel]
#2391103
10/22/17 10:47 AM
10/22/17 10:47 AM
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Joined: Jul 2006
Posts: 619 nj
JAMESDART
mopar
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mopar
Joined: Jul 2006
Posts: 619
nj
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One day when I get off of my ass, I want to get one of those A41 4 speed kits from Silver Sport. They are based on the GM 700R4.
Wise decision, the 700R4 is superior in all the areas discussed. I put a t56 in my bb duster. Liked the overdrive in old car so much I swapped a 700r4 into my wagoneer trail truck. Worked great, for that the low 1st gear was awesome. These were not kits, stuff I did myself. I thought hmmm let me see what this sst kit will cost for the dart. wow! Talk about sticker shock.
Last edited by JAMESDART; 10/22/17 10:49 AM.
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Re: Four Speed Overdrive Automatic
[Re: dogdays]
#2392007
10/23/17 07:56 PM
10/23/17 07:56 PM
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Joined: Aug 2012
Posts: 1,574 Lakeland FL
floridian
pro stock
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pro stock
Joined: Aug 2012
Posts: 1,574
Lakeland FL
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The 700R4 was based on the Turbo Hydro 350.
The TH2004R was based on a different transmission, all the information is available online in several places. Neither was based on the Turbo Hydro 400. The 4L80E, 4L85E, 6L80 and 6L90 were based on theTH400. I'm not sure about the 8L90.
R. TY for updating my incorrect info....
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Re: Four Speed Overdrive Automatic
[Re: floridian]
#2392864
10/25/17 12:56 PM
10/25/17 12:56 PM
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Joined: Sep 2003
Posts: 20,272 north of coder
moparx
"Butt Crack Bob"
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"Butt Crack Bob"
Joined: Sep 2003
Posts: 20,272
north of coder
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The 700R4 was based on the Turbo Hydro 350.
The TH2004R was based on a different transmission, all the information is available online in several places. Neither was based on the Turbo Hydro 400. The 4L80E, 4L85E, 6L80 and 6L90 were based on theTH400. I'm not sure about the 8L90.
R. TY for updating my incorrect info.... very interesting, as i have read lots of printed material that clearly states the 700R4 WAS based on the TH400. my local trans guy has shown me the later L80 series parts comparison[s] between them and the TH400, but we never discussed the 700R4. thank you for the information ! just goes to show it's possible to teach an OLD guy[dog] new tricks !
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Re: Four Speed Overdrive Automatic
[Re: moparx]
#2393071
10/25/17 08:58 PM
10/25/17 08:58 PM
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Joined: Jan 2003
Posts: 12,814 Benton, IL.
DaveRS23
Master of nothing...
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Master of nothing...
Joined: Jan 2003
Posts: 12,814
Benton, IL.
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Looks like the biggest down side to putting a GM based tranny in your Mopar is money. The GM based kits look to cost over a grand more than the Mopar based stuff.
Master, again and still
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Re: Four Speed Overdrive Automatic
[Re: 6PakBee]
#2393084
10/25/17 09:28 PM
10/25/17 09:28 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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It uses a flexplate with a ring gear because the GM torque converter doesn't have a ring gear mounted to it. Nothing to do with relocation.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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