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440 a518 swap info #107139 08/19/08 01:02 AM 08/19/08 01:02 AM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	I know this has been beaten up as a topic but no realy good info on the adapter plates them selfs is out there. I dont trust a bell that bolts to the pump it self. So I am just wondering if anyone has pictures of the adapter plate bolted to a big block and or how it works. I got a rough idea and I am thinking about making my own adapter plate I will be doing a build on this tranny and may ask more questions as I do It.

Re: 440 a518 swap info #107140 08/19/08 01:09 AM 08/19/08 01:09 AM
Joined: May 2008 Posts: 5,399 Aurora, Colorado 451Mopar master
451Mopar master Joined: May 2008 Posts: 5,399 Aurora, Colorado	I have a JVX adaptor plate. It is 1/2" thick and has a machined adaptor for the crank along with a new flexplate that has the starter gear attatched to it. There was a Hot Rod article about 10+ years ago on this swap, and this is the adaptor they used.

Re: 440 a518 swap info [Re: 451Mopar] #107141 08/19/08 01:24 AM 08/19/08 01:24 AM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	Yeh hey thanks for the quick reply they never gave much infor on the plate it self. So half inch hu? is it aluminum? I could quite possibly machine it my self. I build my own intake and efi with a megasquirt kit. I will probably have the ecu control the overdrive. I have a 92 a518 non lockup and 2 727 bigblock trans and another 440 block to fit everything with.

Re: 440 a518 swap info #107142 08/19/08 03:31 AM 08/19/08 03:31 AM
Joined: May 2008 Posts: 5,399 Aurora, Colorado 451Mopar master
451Mopar master Joined: May 2008 Posts: 5,399 Aurora, Colorado	I think the adaptor was machined from a big sized plate, and it uses unique bolts that have about 1/4" thick head and screw in with an allen wrench. The plate re-locates the starter position, so a notch has to be cut in the transmission bellhousing for the starter. The adaptor kit was pricy, I think around $500! Here are some related links: http://www.hotrod.com/howto/43323_mopar_overdrive_transmission_swap/index.html http://jvxracing.com/jvxcatalog.pdf Let me know how the megasquirt works out, I might try that in the future... Last edited by 451Mopar; 08/19/08 03:33 AM.

Re: 440 a518 swap info [Re: 451Mopar] #107143 08/19/08 11:04 AM 08/19/08 11:04 AM
Joined: Aug 2005 Posts: 4,861 Riverside, Ca R70RUNNER master
R70RUNNER master Joined: Aug 2005 Posts: 4,861 Riverside, Ca	Courtesy of a Moparts member... https://board.moparts.org/ubbthreads/show...e=1#Post3453311 Bolt on adpt... but seem to work well... Best of Moparts Last edited by R70RUNNER; 08/19/08 11:08 AM. Current cars: 2000 Dak Quad Cab, 2012 Challenger,1970 Road Runner, 1994 Firehawk 1966 Coronet post sedan, 1988 Corvette, 2005 Magnum RT all SOLD R70RUNNER<---VP Inland Empire Chapter of the MPM

Re: 440 a518 swap info [Re: R70RUNNER] #107144 08/19/08 11:08 AM 08/19/08 11:08 AM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	Yeh thanks I belive I have read all the posts I can find on here and other places on the net and I think the bell that bolts to the pump will cause my pump bolts to work loose as time goes on. I am making some serious power just want to have perfact gearing for the 1/4 and a overdrive to cruise in. Last edited by arlo#1; 08/19/08 11:21 AM.

Re: 440 a518 swap info #107145 08/19/08 11:12 AM 08/19/08 11:12 AM
Joined: Aug 2005 Posts: 4,861 Riverside, Ca R70RUNNER master
R70RUNNER master Joined: Aug 2005 Posts: 4,861 Riverside, Ca	Noticed your looking for an adapt plate.. not the bell I'd be interested to see how a 518 stands up for you behind real power... Think it's been tried with results Good luck Current cars: 2000 Dak Quad Cab, 2012 Challenger,1970 Road Runner, 1994 Firehawk 1966 Coronet post sedan, 1988 Corvette, 2005 Magnum RT all SOLD R70RUNNER<---VP Inland Empire Chapter of the MPM

Re: 440 a518 swap info #107146 08/19/08 11:20 AM 08/19/08 11:20 AM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	Does anyone know if the 727 big block tranny torque converter fits a 727 small block tranny?

Re: 440 a518 swap info [Re: 451Mopar] #107147 08/19/08 11:30 AM 08/19/08 11:30 AM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	Quote: I think the adaptor was machined from a big sized plate, and it uses unique bolts that have about 1/4" thick head and screw in with an allen wrench. The plate re-locates the starter position, so a notch has to be cut in the transmission bellhousing for the starter. Let me know how the megasquirt works out, I might try that in the future... So the bolts that thread though the plate to the origanl tranny are counter sunk? I love the megasquirt it has endless capibilitys but kinda like the overdrive conversion its not for every one its alot of work and alot of learning. But a big part of the reason I did it was to learn I have about 3000 miles on the megasquirt and still working out bugs But I built it with 4 throtle bodies staged and a staged 16 injector system as well. I just installed launch control and hooked it to the brake lights for now so when you push the breaks and push the gas it hits a soft rev then a rev limiter and you can basicly pin the gas and once the brake light shuts off you are gone! I have it running the 3 electric fans and electric water pump. set lean at light cruise and full perfact 12.7 at wide open. To much to talk about it has been about 2 years of work so far but I love it there is nothing cooler then building something fast then tring it out! Last edited by arlo#1; 08/19/08 11:33 AM.

Re: 440 a518 swap info #107148 08/19/08 07:13 PM 08/19/08 07:13 PM
Joined: May 2008 Posts: 5,399 Aurora, Colorado 451Mopar master
451Mopar master Joined: May 2008 Posts: 5,399 Aurora, Colorado	The bolts that go to the block are counter sunk into the plate, and then the other side has counter sunk bolts that thred into the plate to make like a stud mounting setup, so the trans goes over the bolts that are threded into the front of the plate and then nuts hold the trans to the adaptor plate. 727 small block/big block torque converters fit the same and can be interchanged if the ballance/bolt pattern are the same. I stock 518 is a bit weak, but there are alot of aftermarket parts to beef them up.

Re: 440 a518 swap info [Re: 451Mopar] #107149 08/19/08 07:20 PM 08/19/08 07:20 PM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	Hey thanks I am planing a good build for it and I think I will get a bigblock stall as long as I can get the starter to line up.

Re: 440 a518 swap info #107150 08/19/08 07:48 PM 08/19/08 07:48 PM
Joined: Jan 2003 Posts: 25,726 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,726 Rio Linda, CA	Quote: Yeh thanks I belive I have read all the posts I can find on here and other places on the net and I think the bell that bolts to the pump will cause my pump bolts to work loose as time goes on. How many instances were reported of pump bolts coming loose? Credibility of reporters? Remember the Clutchflite? Loose pump bolts were never a problem that I heard of and they were used on some insane horsepower installations. The INTERNET, the MISinformation superhighway

Re: 440 a518 swap info [Re: John_Kunkel] #107151 08/19/08 11:39 PM 08/19/08 11:39 PM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	I havent herd of any coming loose, but also havent herd of much for miles on any of the bell users, and not to mention how much power do they make with there cars driving styles? I like to drive hard and put alot of miles on. I am just trying to be cautious. How hard are they launching? twisting on the pump bolts? I would have more faith if a couple guys with big power big blocks had some good runs down the 1/4 and lots of miles on the highway.

Re: 440 a518 swap info #107152 08/19/08 11:58 PM 08/19/08 11:58 PM
Joined: Mar 2005 Posts: 1,545 Seattle, WA 3 375inStroke Special needs person
375inStroke Special needs person 3 Joined: Mar 2005 Posts: 1,545 Seattle, WA	I've got the Ultrabell/440 combo. Haven't cut the bell off yet. What's your reasoning for the pump bolts coming loose? I've worked on jet engines held together with 1/4" fasteners torqued to 65in-lbs. They don't come loose. The flex plate to torque converter uses those four little bolts, and the driveshaft has those four 1/4" bolts with all the engine power going through them, and they don't come loose or break. I don't think the pump bolts have that much going through them. Isn't the Ultrabell most often used on race cars for safety reasons?

Re: 440 a518 swap info [Re: 375inStroke] #107153 08/20/08 12:20 PM 08/20/08 12:20 PM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	Quote: I've got the Ultrabell/440 combo. Haven't cut the bell off yet. What's your reasoning for the pump bolts coming loose? I've worked on jet engines held together with 1/4" fasteners torqued to 65in-lbs. They don't come loose. The flex plate to torque converter uses those four little bolts, and the driveshaft has those four 1/4" bolts with all the engine power going through them, and they don't come loose or break. I don't think the pump bolts have that much going through them. Isn't the Ultrabell most often used on race cars for safety reasons? I am not trying to be a jerk just being cautious and want to see some results before I jumped into a ulta bell. But as for the drive shaft bolts they dont take the stress of the twisting force the yolk does, where as the pump bolts on a ultra bell take all the twisting between the tranny and engine and hold the engine up in the rear and the tranny up in the front.

Re: 440 a518 swap info #107154 08/20/08 12:45 PM 08/20/08 12:45 PM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	First of all, eggs have yolks, while u-joints have YOKES. Secondly, the bolts should not be loaded in shear. They should be tightened sufficiently that the friction between the two surfaces prevents slippage. This depends on material matchup, radius and clamping force. It's the same as mounting a wheel on a hub. I'd say the crank to flexplate hub is more highly stressed. R.

Re: 440 a518 swap info [Re: dogdays] #107155 08/20/08 11:19 PM 08/20/08 11:19 PM
Joined: May 2008 Posts: 5,399 Aurora, Colorado 451Mopar master
451Mopar master Joined: May 2008 Posts: 5,399 Aurora, Colorado	The ultrabell is a nice item. They just were not avaliable 10 years ago when I got the JVX adaptor. A friend of mine is running the Ultrabell to connect his 470 cid stroker to a 904. He just got the car together a month ago and has not raced it yet, so I can't say how it will hold up?

Re: 440 a518 swap info [Re: 451Mopar] #107156 08/21/08 06:02 AM 08/21/08 06:02 AM
Joined: Sep 2003 Posts: 2,175 Duloc T The Shadow top fuel
The Shadow top fuel T Joined: Sep 2003 Posts: 2,175 Duloc	Pat has adapters at SMR transmission. Another thing is according to Pat the 518 is very inefficient. Moving to a 518 will take about 1 second of your quarter mile time...If performance matters to you.

Re: 440 a518 swap info [Re: The Shadow] #107157 08/21/08 08:16 AM 08/21/08 08:16 AM
Joined: Feb 2003 Posts: 4,204 Fort Worth, TX Clair_Davis master
Clair_Davis master Joined: Feb 2003 Posts: 4,204 Fort Worth, TX	Less efficient than a 727? Clair 68 Sport Fury Vert (440/727) Getting a heart transplant... 69 Valiant 100 (340/833/EFI)

Re: 440 a518 swap info [Re: Clair_Davis] #107158 08/21/08 09:32 AM 08/21/08 09:32 AM
Joined: Mar 2005 Posts: 1,545 Seattle, WA 3 375inStroke Special needs person
375inStroke Special needs person 3 Joined: Mar 2005 Posts: 1,545 Seattle, WA	I've heard about truck racers that are loosing a second in the quarter too switching to a 727. A full second, though? Really?

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