Re: 727 Aluminum Case Type //// A518 Aluminum Case Type
[Re: DeMopuar]
#1910598
09/11/15 03:37 PM
09/11/15 03:37 PM
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Joined: Jan 2003
Posts: 28,071 Irving, TX
feets
Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,071
Irving, TX
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Sounds like he's going to weld a B/RB bellhousing onto a 518.
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
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Re: 727 Aluminum Case Type //// A518 Aluminum Case Type
[Re: DeMopuar]
#1910817
09/11/15 11:28 PM
09/11/15 11:28 PM
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Joined: Dec 2008
Posts: 349 West Central Wisconsin
DeMopuar
OP
enthusiast
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OP
enthusiast
Joined: Dec 2008
Posts: 349
West Central Wisconsin
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Yes, I'm going to do the pain in the ass that everyone is telling me not to do. No great reward without great risk right? Sounds like he's going to weld a B/RB bellhousing onto a 518. You're going to like this one feets. The aluminum KB 572 will be going into my 1973 Imperial coupe backed by this transmission. I'm concerned the torque of the 572 will rip up the bell housing that I weld up -- so I'll take any suggestions that anyone has to make sure this doesn't happen. I'm not going the Ultrabell route either. I really don't trust all of the torque being held by the tranny pump bolts -- that's not going to work for me at all. The plan is to clean up the cases in a Tornado parts washer, do the proper cutting of the bell housings to the cases, and then take the pieces that will get welded together and get them alkaline dipped to clean up the aluminum as best that we can before TIG welding. Would there be a better acid dip that I should consider? I just want to make sure I get as much oil and impurities out of these pieces before welding and would take any suggestions on what works the best. I plan on doing lots of practice getting this just right. I know what a PITA this is going to be to be able to get the big block bell onto the 46RH and 46RE transmission cases -- but I think I've got more time than brains, so, why not? Besides, I really like how the 73 Imperial rolls down the road, and that's what it's all about, right? With that huge torquey motor and a nice OD tranny, it will be damn near nirvana. I'm going to use a CNC to cut off each bell housing and then use a precision jig to get the proper orientation and indexing to the big block bell on the 46RH transmission case. I'm really interested in the 46RE transmission controller too, so I can go that route too if that project gets completed and works well. I'll probably end up making one of each so I can go either way. Seems like it's a lot easier to find 46RE trannys than 46RH. I've got a couple of 46RH trannys right now as well as a 46RE. I've got to round up some big block trannys too, that shouldn't be too hard though. I've just got to make sure the threads aren't all screwed up on the bell, and that the right ear is on the driver's side of the big block bell for the 73 tranny linkage. Wish me luck, I think I'm going to need it....................
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Re: 727 Aluminum Case Type //// A518 Aluminum Case Type
[Re: DeMopuar]
#1911046
09/12/15 12:14 PM
09/12/15 12:14 PM
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Joined: Jan 2003
Posts: 28,071 Irving, TX
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Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,071
Irving, TX
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Quite nice! I like the project.
My Imperial was originally destined to get turbos, efi, and OD but it has taken a back seat to the other project I've been lusting after for years.
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
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Re: 727 Aluminum Case Type //// A518 Aluminum Case Type
[Re: DeMopuar]
#1911334
09/12/15 11:00 PM
09/12/15 11:00 PM
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Joined: Jan 2003
Posts: 26,005 Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 26,005
Rio Linda, CA
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I'm not going the Ultrabell route either. I really don't trust all of the torque being held by the tranny pump bolts -- that's not going to work for me at all. You musta been listening to E-Booger. Lots of Clutchflites were subjected to insane torque and I never heard of the pump bolts failing. Let's see, shear strength of six 5/16" bolts..............
The INTERNET, the MISinformation superhighway
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Re: 727 Aluminum Case Type //// A518 Aluminum Case Type
[Re: DeMopuar]
#1911415
09/13/15 01:12 AM
09/13/15 01:12 AM
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Joined: Dec 2008
Posts: 349 West Central Wisconsin
DeMopuar
OP
enthusiast
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OP
enthusiast
Joined: Dec 2008
Posts: 349
West Central Wisconsin
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You musta been listening to E-Booger. Lots of Clutchflites were subjected to insane torque and I never heard of the pump bolts failing.
Let's see, shear strength of six 5/16" bolts.............. I'm listening to John Cope of Cope Racing Transmissions. Those bolts were never designed to handle continued hammering of 700 foot pounds of torque in a street car. John has seen what these Ultrabells look like in the application that I am talking about, so I trust what he says on this subject, so that's the route I'm going. John said I'll have a tough time with getting the bells done correctly, so this will not be a two week project by any stretch of the imagination. This is going to be a car that will be driven thousands of miles too -- so I just want to do the best job that I can. This will not be a race car that puts on a quarter mile at a time (so no trailer backup deal for me). I've finally figured out what I want in a car -- if I gotta put this car in a trailer to get it around, I don't want it. This bad boy will be driven, so for reliability's sake, this KB engine is getting Stage V heads and valve gear, as well as FAST EFI with a crank trigger and coil on plug spark. I want reliability -- plus it's gotta be cool. If I wanted to go a cheaper route I'd do this to a 1968 Coupe deVille with a GM LS9 and a built GM 200R4 tranny...........................but I'm not that guy. I like Mopar gear, even if it has a price premium associated with it.
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Re: 727 Aluminum Case Type //// A518 Aluminum Case Type
[Re: DeMopuar]
#1911417
09/13/15 01:19 AM
09/13/15 01:19 AM
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Joined: Aug 2003
Posts: 954 garnett kansas
rhad
super stock
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super stock
Joined: Aug 2003
Posts: 954
garnett kansas
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is it possible to make a adapter plate like the GM Chev to Buick/Olds???
my ladder of success is missing some rungs
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Re: 727 Aluminum Case Type //// A518 Aluminum Case Type
[Re: DeMopuar]
#1912332
09/14/15 05:28 PM
09/14/15 05:28 PM
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Joined: Jan 2005
Posts: 12,424 Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
Joined: Jan 2005
Posts: 12,424
Kalispell Mt.
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Don't know about the welding but... you should use a 46RE case to build the 46RH and use the adapter sleeve in the plug in hole so when you decide to convert to a 46RE you do not have to re-do the trans with another case. If you use the RH case you will have to bore the hole bigger for the RE plug or make another case.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: 727 Aluminum Case Type //// A518 Aluminum Case Type
[Re: DeMopuar]
#1912348
09/14/15 06:04 PM
09/14/15 06:04 PM
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Joined: Jan 2003
Posts: 28,071 Irving, TX
feets
Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,071
Irving, TX
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Why worry about building another transmission? Build this one right and don't worrry about it.
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
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