Previous Thread
Next Thread
Print Thread
Page 2 of 3 1 2 3
Re: Four Speed Overdrive Automatic [Re: 6PakBee] #2390462
10/20/17 07:59 PM
10/20/17 07:59 PM
Joined: Apr 2003
Posts: 12,188
Looking for a way out of Middl...
IMGTX Offline
I Live Here
IMGTX  Offline
I Live Here

Joined: Apr 2003
Posts: 12,188
Looking for a way out of Middl...
I did the A518 conversion on and e-body without cutting the floorboard.

I trimmed the stiffing ribs on the side of the transmission and created my own rear mount that uses a generic Chevy isolator.

I had the pictures on Photobucket but they got greedy so here is what I did.

Drivers Side rib before trimming 2.JPG
Drivers Side rib before trimming

Drivers Side rib after trimming.JPG
Drivers side Rib After Trimming

Passenger Side Mounting Boss Untrimmed.JPG
Passenger Side Mounting Boss before Trimming

Passenger side mounting boss after trimming 2.JPG
After Trimming away the unnecessary boss on the passenger side

Re: Four Speed Overdrive Automatic [Re: IMGTX] #2390463
10/20/17 08:07 PM
10/20/17 08:07 PM
Joined: Apr 2003
Posts: 12,188
Looking for a way out of Middl...
IMGTX Offline
I Live Here
IMGTX  Offline
I Live Here

Joined: Apr 2003
Posts: 12,188
Looking for a way out of Middl...
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.

SpeedometerCableClearancecable.JPG
This shows the isolator/mount I used

SpeedoCable.JPG
Paper Crosmember Mockup

SideView2.JPG
Side view of paper trans crossmember from the side.

Re: Four Speed Overdrive Automatic [Re: IMGTX] #2390531
10/20/17 10:15 PM
10/20/17 10:15 PM
Joined: Jan 2003
Posts: 10,666
North Dakota
6PakBee Offline OP
I Live Here
6PakBee  Offline OP
I Live Here

Joined: Jan 2003
Posts: 10,666
North Dakota
Originally Posted By IMGTX
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".
Re: Four Speed Overdrive Automatic [Re: IMGTX] #2390561
10/20/17 10:52 PM
10/20/17 10:52 PM
Joined: Mar 2011
Posts: 3,056
Michigan
A
A727Tflite Online content
master
A727Tflite  Online Content
master
A

Joined: Mar 2011
Posts: 3,056
Michigan
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.
Re: Four Speed Overdrive Automatic [Re: 6PakBee] #2390682
10/21/17 04:06 AM
10/21/17 04:06 AM
Joined: Feb 2010
Posts: 18,493
Granite Bay CA
Kern Dog Offline
Striving for excellence
Kern Dog  Offline
Striving for excellence

Joined: Feb 2010
Posts: 18,493
Granite Bay CA
Fuel economy is just one of the goals that I see. I find that the high rpms and vibrations are okay for a half hour or so but beyond that, it just frazzles the nerves. Imagine riding in a freight train car for 8 hours straight. Your ears are hurting, your senses are all overstimulated and tired, you are physically drained from it all.
I had a Gear Vendors behind a 727 in my Charger. Their .78 O/D ratio is not great but it did help freeway cruising.

Re: Four Speed Overdrive Automatic [Re: John_Kunkel] #2390694
10/21/17 07:12 AM
10/21/17 07:12 AM
Joined: Jul 2007
Posts: 732
eastern,Ky
70RT Charger Offline
super stock
70RT Charger  Offline
super stock

Joined: Jul 2007
Posts: 732
eastern,Ky
Originally Posted By John_Kunkel
Originally Posted By Frankenduste


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.
Re: Four Speed Overdrive Automatic [Re: 6PakBee] #2390701
10/21/17 09:25 AM
10/21/17 09:25 AM
Joined: May 2005
Posts: 4,681
Florida
BDW Online content
master
BDW  Online Content
master

Joined: May 2005
Posts: 4,681
Florida
518 swap is the best thing I've done to my car, so much more enjoyable to drive.
Only 2500rpms at 80mph, 3.73 gears with 18/40/275 tires.


Re: Four Speed Overdrive Automatic [Re: A727Tflite] #2390744
10/21/17 11:42 AM
10/21/17 11:42 AM
Joined: Apr 2003
Posts: 12,188
Looking for a way out of Middl...
IMGTX Offline
I Live Here
IMGTX  Offline
I Live Here

Joined: Apr 2003
Posts: 12,188
Looking for a way out of Middl...
Originally Posted By Transman
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?


It didn't check angles with a gauge but visually it is spot on. I did check the driveshaft angle with a gauge and it is correct without changing anything at the axel.

Approximate mounting position of the trans extension.JPG
Approximate mounting position of the trans extension

EndView.JPG
After the mount is mocked up.

SideView.JPG
You can see in the side view the rear mount is about an inch below the torsion bar crossmember. Not a bad drop considering the pan is about the same depth. It was a few years ago but the cut mount was about $35. I just had to fold it and weld some spot

Re: Four Speed Overdrive Automatic [Re: 70RT Charger] #2390867
10/21/17 03:27 PM
10/21/17 03:27 PM
Joined: Aug 2012
Posts: 1,574
Lakeland FL
F
floridian Offline
pro stock
floridian  Offline
pro stock
F

Joined: Aug 2012
Posts: 1,574
Lakeland FL
Originally Posted By 70RT Charger
Originally Posted By John_Kunkel
Originally Posted By Frankenduste


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.
Re: Four Speed Overdrive Automatic [Re: 6PakBee] #2390868
10/21/17 03:28 PM
10/21/17 03:28 PM
Joined: Dec 2007
Posts: 232
Alberta Canada
PossessedDuster Offline
enthusiast
PossessedDuster  Offline
enthusiast

Joined: Dec 2007
Posts: 232
Alberta Canada
Whats so different about the floor pan in a B-body from an E-body?

I'd love this in my 67' Belvedere but all the stories say major cutting is required.

Re: Four Speed Overdrive Automatic [Re: Kern Dog] #2391068
10/22/17 03:37 AM
10/22/17 03:37 AM
Joined: Jan 2005
Posts: 3,699
Newport, Mi
Evil Spirit Offline
master
Evil Spirit  Offline
master

Joined: Jan 2005
Posts: 3,699
Newport, Mi
Originally Posted By Frankenduster
Originally Posted By DaytonaTurbo
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.........
Re: Four Speed Overdrive Automatic [Re: 6PakBee] #2391073
10/22/17 04:15 AM
10/22/17 04:15 AM
Joined: Feb 2010
Posts: 18,493
Granite Bay CA
Kern Dog Offline
Striving for excellence
Kern Dog  Offline
Striving for excellence

Joined: Feb 2010
Posts: 18,493
Granite Bay CA
Hey...If they can both be built to withstand the torque for about the same cost, I'd look at the 200-4R as well. The 2.74 to 1.57 1st to 2nd is a less radical rpm drop and it has a .67 OD, the best of any automatic OD that fits these cars. The 200-4R is based on the 200 series which was sorta similar to the TH350 series. I know many Drag Race guys were using Art Carr built 200-4Rs in the Grand National Buicks...a car was not exactly a feather weight.
For me, my tires go up in smoke beyond 1/2 throttle anyway. Whatever transmission I have would not see the full abuse unless I had stickier tires.

Re: Four Speed Overdrive Automatic [Re: A727Tflite] #2391081
10/22/17 07:05 AM
10/22/17 07:05 AM
Joined: Jan 2003
Posts: 3,575
The Netherlands
BigBlockMopar Offline
master
BigBlockMopar  Offline
master

Joined: Jan 2003
Posts: 3,575
The Netherlands
Originally Posted By Transman
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.

Re: Four Speed Overdrive Automatic [Re: John_Kunkel] #2391103
10/22/17 10:47 AM
10/22/17 10:47 AM
Joined: Jul 2006
Posts: 619
nj
J
JAMESDART Offline
mopar
JAMESDART  Offline
mopar
J

Joined: Jul 2006
Posts: 619
nj
Originally Posted By John_Kunkel
Originally Posted By Frankenduste


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.
Re: Four Speed Overdrive Automatic [Re: JAMESDART] #2391990
10/23/17 07:21 PM
10/23/17 07:21 PM
Joined: Jan 2003
Posts: 16,376
D
dogdays Offline
I Live Here
dogdays  Offline
I Live Here
D

Joined: Jan 2003
Posts: 16,376
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.

Re: Four Speed Overdrive Automatic [Re: dogdays] #2392007
10/23/17 07:56 PM
10/23/17 07:56 PM
Joined: Aug 2012
Posts: 1,574
Lakeland FL
F
floridian Offline
pro stock
floridian  Offline
pro stock
F

Joined: Aug 2012
Posts: 1,574
Lakeland FL
Originally Posted By dogdays
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....

Re: Four Speed Overdrive Automatic [Re: floridian] #2392864
10/25/17 12:56 PM
10/25/17 12:56 PM
Joined: Sep 2003
Posts: 19,239
north of coder
moparx Offline
"Butt Crack Bob"
moparx  Offline
"Butt Crack Bob"

Joined: Sep 2003
Posts: 19,239
north of coder
Originally Posted By floridian
Originally Posted By dogdays
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 !
beer

Re: Four Speed Overdrive Automatic [Re: moparx] #2393071
10/25/17 08:58 PM
10/25/17 08:58 PM
Joined: Jan 2003
Posts: 11,894
Benton, IL.
D
DaveRS23 Online rolleyes
Special needs idiot
DaveRS23  Online Rolleyes
Special needs idiot
D

Joined: Jan 2003
Posts: 11,894
Benton, IL.
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
Re: Four Speed Overdrive Automatic [Re: 6PakBee] #2393081
10/25/17 09:24 PM
10/25/17 09:24 PM
Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar Offline
master
451Mopar  Offline
master

Joined: May 2008
Posts: 5,399
Aurora, Colorado
The JVX adaptor is nice, but moves everything back 1/2" and you have to take a large hole saw to the transmission bellhousing to make clearance for relocating the starter. It also uses a flexplate with a starter ring as the converter will also be moved further back.

The J.W Performance Ultra Bell makes the conversion a bit easier.

Re: Four Speed Overdrive Automatic [Re: 6PakBee] #2393084
10/25/17 09:28 PM
10/25/17 09:28 PM
Joined: Sep 2007
Posts: 14,889
up yours
Supercuda Offline
About to go away
Supercuda  Offline
About to go away

Joined: Sep 2007
Posts: 14,889
up yours
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.
Page 2 of 3 1 2 3






Powered by UBB.threads™ PHP Forum Software 7.7.1