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Overdrive Auto behind BB?? #17677
10/09/05 09:48 PM
10/09/05 09:48 PM

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How hard would it be to put one of the newer overdrive automatics behind a 383 in a b-body? What would it cost and how much work would it take?
Thanks

Re: Overdrive Auto behind BB?? #17678
10/09/05 10:24 PM
10/09/05 10:24 PM
Joined: Dec 2003
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Phoenix - surface of the sun
nomore65BelvJim Offline
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lots of variables! I'm doing a 518 OD(46RH) in my 65 B. None of the OD trans were made to fit a big block so you have to "adapt" it. I'll be cutting off the stock bell and bolting on a J.W. Performance bell (about $290). You'll have to fabricate a new trans crossmember and shorten the driveshaft. You may also have to do some "clearancing" of the trans tunnel. Lots of other little things, like wiring the OD and lock up controls.
What you spend will depend on how tough you want the transmission to be and how much work you farm out.
My estimates run from $850 if I do everything myself, including a trans rebuild, to as much as $4000 if you just drop it off somewhere and tell em to have at it.

2052504-DSC01165b.jpg (202 downloads)
Re: Overdrive Auto behind BB?? #17679
10/09/05 10:41 PM
10/09/05 10:41 PM
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Colo Springs, Co
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dragaddict Offline
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We did a Gear Venders this summer with 4;10's in the rear and am still in heaven with it. Bit of money and work but definatly one of those things you forget the pain over with the drive ability improvement.

Re: Overdrive Auto behind BB?? [Re: dragaddict] #17680
10/09/05 11:14 PM
10/09/05 11:14 PM
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Irving, TX
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Quote:

We did a Gear Venders this summer with 4;10's in the rear and am still in heaven with it. Bit of money and work but definatly one of those things you forget the pain over with the drive ability improvement.




Being able to forget the pain of how much it cost is the reason I'm building a 518 to go behind the TT440.
Considering the cost of the Gear Vendors unit, there's no reason to even consider that thing.


We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
Re: Overdrive Auto behind BB?? #17681
10/09/05 11:26 PM
10/09/05 11:26 PM

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Heres some articles that may have some info that helps you. The first one shows a late model 4 speed od swap into a GTX. The second shows the similarities between a late model 518 and a 727. Also how to wire one up.

http://www.hotrod.com/howto/43323/index.html
http://www.transmissioncenter.net/alto_3.htm

Re: Overdrive Auto behind BB?? #17682
10/10/05 01:53 AM
10/10/05 01:53 AM

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Thank you! That gives me something to start with.

Re: Overdrive Auto behind BB?? #17683
10/10/05 02:27 AM
10/10/05 02:27 AM
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Bern, Switzerland
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This crossmember hackjob is just a 100% no-no for me on this swap. I don't know how how to solder and I would never cut my car because of an OD, then I really like the GV OD better where mostly (there are also people that had to cut their floors!) an airhammer is all you need... considering this and the 80$/hour I would have to pay someone to do all the welding for me this swap becomes at least as expensive as an GV OD, doesn't it?

That's from the Hotrod magazine article "Before you start planning this summer’s family vacation in your overdrive Hemi Charger, remember that this is not a project for the faint of heart—or wallet. The retail price for an A518 is around $1600 (not including the torque converter), and the JVX adapter kit adds another $495. That’s more than two grand, and you haven’t even started grinding metal or fabricating linkage pieces, which can cost in the neighborhood of $800, according to Art Carr. But if you’re willing to spend the time and money, this is a great way to give an old Mopar new shifts."

Re: Overdrive Auto behind BB?? [Re: 6o4o] #17684
10/10/05 07:24 AM
10/10/05 07:24 AM
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chatham, Ilinois
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I have a brand new JW ultrabell for a BB to 518 swap and it needs a new owner. I almost did this swap in a Cuda, but sold the car first.
There are several ways to do this, it is just up to the owner and car.

Re: Overdrive Auto behind BB?? [Re: 6o4o] #17685
10/10/05 08:30 AM
10/10/05 08:30 AM
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Grand Haven, MI
patrick Offline
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Quote:

This crossmember hackjob is just a 100% no-no for me on this swap. I don't know how how to solder and I would never cut my car because of an OD, then I really like the GV OD better where mostly (there are also people that had to cut their floors!) an airhammer is all you need... considering this and the 80$/hour I would have to pay someone to do all the welding for me this swap becomes at least as expensive as an GV OD, doesn't it?

That's from the Hotrod magazine article "Before you start planning this summer’s family vacation in your overdrive Hemi Charger, remember that this is not a project for the faint of heart—or wallet. The retail price for an A518 is around $1600 (not including the torque converter), and the JVX adapter kit adds another $495. That’s more than two grand, and you haven’t even started grinding metal or fabricating linkage pieces, which can cost in the neighborhood of $800, according to Art Carr. But if you’re willing to spend the time and money, this is a great way to give an old Mopar new shifts."




6040, do some more investigating, IIRC, there's a few guys with '71-up B bodies that didn't have to cut and weld on the floorpan for a 518, they just had to remove a few ribs on the case of the OD and fabricate the bolt-in portion of the xmember....


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)
Re: Overdrive Auto behind BB?? [Re: patrick] #17686
10/10/05 08:55 AM
10/10/05 08:55 AM
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Atco NJ
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cjk440 has a photo thread about that... search for it!

Re: Overdrive Auto behind BB?? [Re: 6o4o] #17687
10/10/05 07:38 PM
10/10/05 07:38 PM
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Irving, TX
feets Offline
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Who buys a new tranny?
Grab a used one and rebuild it. It's not appreciably more than a 727.
I can understand having difficulties finding one outside the US, but there should be no problems in the country.


We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
Re: Overdrive Auto behind BB?? #17688
10/10/05 08:11 PM
10/10/05 08:11 PM
Joined: Jan 2005
Posts: 3,344
Central TX
roe Offline
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Wasnt there supposed to be a direct bolt in job for the OD tranny from Jamie Passon(check spelling), or something like that? If so, is it available yet, has anyone used it? Results?



1971 Plymouth Satellite
408/904 8 3/4 3.23 SG
Re: Overdrive Auto behind BB?? [Re: roe] #17689
10/10/05 08:15 PM
10/10/05 08:15 PM
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Houston, Tx
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Quote:

Wasnt there supposed to be a direct bolt in job for the OD tranny from Jamie Passon(check spelling), or something like that? If so, is it available yet, has anyone used it? Results?





thats a 4-speed 833 with different ratio's and its comparably priced to the gear vendors unit.

Re: Overdrive Auto behind BB?? [Re: AlexP] #17690
10/10/05 08:20 PM
10/10/05 08:20 PM
Joined: Jan 2005
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Central TX
roe Offline
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Does anybody remember the title of the post, I would like to do some reading on it. If you can, please post a link.

Thanks
roe



1971 Plymouth Satellite
408/904 8 3/4 3.23 SG
Re: Overdrive Auto behind BB?? [Re: feets] #17691
10/10/05 08:33 PM
10/10/05 08:33 PM
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NotRussia
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You'd think by now, someone can sell the tranny mount already modified:



So folks who can't weld can just bolt her up. Ditto w/outlining exactly where on the tranny case you can grind/cut off to fit your car (I think only e-body and '71-'74 b-body you can do this w/o cutting your tunnel).

'specially if Keisler is probably going to charge big bux for a GM Trans conversion in your Mopar.

Re: Overdrive Auto behind BB?? [Re: feets] #17692
10/10/05 10:13 PM
10/10/05 10:13 PM

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Quote:

Who buys a new tranny?
Grab a used one and rebuild it. It's not appreciably more than a 727.
I can understand having difficulties finding one outside the US, but there should be no problems in the country.




I agree with this. You can find 518's around here rebuilt for under $800, a low mile junkyard unit will be MUCH less. Welding isnt a huge expense either. Most muffler shops will weld a crossmember for you for $30 or so if you already have the measurements you want and the parts cut out. Anyone with a tape measure and an angle grinder could do this.

Last edited by OBcoronet; 10/10/05 10:14 PM.
Re: Overdrive Auto behind BB?? #17693
10/11/05 08:30 AM
10/11/05 08:30 AM
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Posts: 1,913
Brunswick, Jawgia
Snailpower Offline
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If I can do it, most all of you can too! Take a look. It's not that hard...

This pic is before the second bolt holes were drilled in the crossmember ears, or the mount was attached.


2055900-DSCF0006.JPG (187 downloads)
Last edited by Snailpower; 10/11/05 08:32 AM.

70 Coronet- turbocharged 360/518/3.73 SG
Re: Overdrive Auto behind BB?? [Re: Snailpower] #17694
10/11/05 08:35 AM
10/11/05 08:35 AM
Joined: Sep 2004
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Brunswick, Jawgia
Snailpower Offline
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Heres a pic of the crossmember modification. A little entailed, but stronger than the factory.


2055906-transtunnel.JPG (164 downloads)
Last edited by Snailpower; 10/11/05 08:36 AM.

70 Coronet- turbocharged 360/518/3.73 SG
Re: Overdrive Auto behind BB?? [Re: Snailpower] #17695
10/11/05 09:43 AM
10/11/05 09:43 AM
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Bern, Switzerland
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But this A518 just makes sense if you have a lockup converter, doesn't it? Can you get high performance lock-up converters that support 500HP or more?

Re: Overdrive Auto behind BB?? [Re: 6o4o] #17696
10/11/05 09:45 AM
10/11/05 09:45 AM
Joined: Aug 2003
Posts: 11,179
Atco NJ
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if you have a NON lockup 518 - with a TIGHT converter it will be fine... but yes you can SMR trans in canada sells them i think...

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