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8HP70 mated to LS?

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Old Mar 3, 2022 | 07:07 PM
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Default 8HP70 mated to LS?

I've been doing a bunch of research and can't find anything of use about mating an 8hp70 to an LS. I want to swap a 5.3 into my car, but need to figure out the transmission situation first. Car is AWD and I would really like to keep my factory transmission. Looking for any advice possible... How do I go about making the transmission and engine communicate? If this isn't the right place to post this, please let me know.

Last edited by djm33; Mar 3, 2022 at 07:17 PM.
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Old Mar 3, 2022 | 08:04 PM
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searching google literally pulled up 4 places that make an adapter plate for it, and one that will soon be doing computers for it. which means someone has done it before, what car is it going in to?

https://getawaycarz.com/products
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Old Mar 3, 2022 | 08:10 PM
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I found an adapter plate I was more concerned about the engine and trans being able to communicate! It's a 2013 Jaguar XF.
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Old Mar 3, 2022 | 08:11 PM
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Originally Posted by djm33
I found an adapter plate I was more concerned about the engine and trans being able to communicate! It's a 2013 Jaguar XF.
Gotcha. Looks like those guys in that link are working on it, looked promising.
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Old Mar 4, 2022 | 08:33 AM
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by research do you mean asking a random person on the street? considering how obscure the request is, theres a decent amount of info out there.
heres a thread:
https://www.pro-touring.com/threads/...0-mated-to-sbc

if you google around more you will find a couple options for available controllers but they require you to replace the mechatronics computer.
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Old Mar 4, 2022 | 03:39 PM
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Here is another adapter option:
https://www.domi-works.com/collectio...ct-adapter-kit

Not sure about electronics.

Andrew
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Old Mar 7, 2022 | 07:53 AM
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trendsetter was kind enough to post the CAD data for his adapter in his build thread
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Old Mar 7, 2022 | 09:01 AM
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What’s the torque capability of this trans stock??
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Old Apr 19, 2022 | 07:34 AM
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Originally Posted by djm33
I've been doing a bunch of research and can't find anything of use about mating an 8hp70 to an LS. I want to swap a 5.3 into my car, but need to figure out the transmission situation first. Car is AWD and I would really like to keep my factory transmission. Looking for any advice possible... How do I go about making the transmission and engine communicate? If this isn't the right place to post this, please let me know.
Hey, I can help with this. I have an 8hp70 on my LS2 in my Miata. I am using one from a 2014 Jaguar XFR-S but it is basically the same as yours. The adapter plate came from PMC, it has a template to drill the LS flex plate to match the Jag TQ converter. For the computer I used a stand alone from TurboLamik, it is a serious piece and cost me 2x as much as my Holley Terminator X but now I have an "e-clutch", transbrake, multiple selectable programs and full tuneability. I don't see why this wouldn't be a relatively easy swap in your car. How does your awd work? Turbolamik was working on servo control for the bmw variant but I know Land Rover uses a basic torsen setup that is very easy to implement.
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Old Apr 19, 2022 | 09:05 AM
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Originally Posted by Jimbo1367
What’s the torque capability of this trans stock??
Around 800ft lb if tuned correctly. Results may vary.
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Old Apr 19, 2022 | 09:09 AM
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Originally Posted by 1RMDave
Hey, I can help with this. I have an 8hp70 on my LS2 in my Miata. I am using one from a 2014 Jaguar XFR-S but it is basically the same as yours. The adapter plate came from PMC, it has a template to drill the LS flex plate to match the Jag TQ converter. For the computer I used a stand alone from TurboLamik, it is a serious piece and cost me 2x as much as my Holley Terminator X but now I have an "e-clutch", transbrake, multiple selectable programs and full tuneability. I don't see why this wouldn't be a relatively easy swap in your car. How does your awd work? Turbolamik was working on servo control for the bmw variant but I know Land Rover uses a basic torsen setup that is very easy to implement.
hey dave, thanks for sharing! any chance you have pics and/or a build thread we could take a look at? would be interesting to see.

Also, (obviously) the dodge ram zf8hp's are almost certainly much more plentiful , are there huge differences between the jaguar trans and the dodge trans?
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Old Apr 19, 2022 | 10:14 AM
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Originally Posted by bobcratch
hey dave, thanks for sharing! any chance you have pics and/or a build thread we could take a look at? would be interesting to see.

Also, (obviously) the dodge ram zf8hp's are almost certainly much more plentiful , are there huge differences between the jaguar trans and the dodge trans?
Hey Bob, I don't really have a build thread but it I have a ton of pics @1RMDave

It was surprisingly hard to find a 2wd dodge variant in Canada, locally anyway. Control wise the TurboLamik can control any 8hp (45/70/90) since you are replacing the circuit board. I believe there are companies that can work with the stock dodge mechatronics so a bit easier that way. The bellhousings are totally different, I went with the Jaguar specifically since it appears to have the smallest bellhousing.
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Old Apr 20, 2022 | 06:55 AM
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Originally Posted by bobcratch
hey dave, thanks for sharing! any chance you have pics and/or a build thread we could take a look at? would be interesting to see.

Also, (obviously) the dodge ram zf8hp's are almost certainly much more plentiful , are there huge differences between the jaguar trans and the dodge trans?
Hey! I tried posting pics yesterday but it wouldn't let me. I have most of the build documented on my Instagram @1RMDave there is no filler, it's all build pics. Internally the dodge and jag trans are the same except for the control board which gets replaced when you do an aftermarket TCU like turbolamik or htg. The bellhousing on the jag appears to be quite a bit smaller in certain areas which was important to me. Finding a 2wd dodge trans was surprisingly difficult in my area and the one I did find was way overpriced. I do however believe there are a couple companies who make piggyback controllers to work with the dodge software so that saves some money.
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Old Apr 20, 2022 | 07:33 AM
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are the bellhousing bolt patterns the same between jag and dodge?
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Old Apr 20, 2022 | 08:12 AM
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Originally Posted by TrendSetter
are the bellhousing bolt patterns the same between jag and dodge?
No Sir, all manufacturers have their own pattern and the bellhousings are cast with the trans case so you can't swap them. BMW seems to be the most common variant for swaps currently and even they have a couple different patterns. It's driven by the fact that a lot of ZF swaps are being done in eastern Europe. PMC, turbolamik and htg are all Polish so they don't have the dodge stuff. Even my plate was designed around a diesel Jag that doesn't exist here but it works with some of the gas jobs too.
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Old Apr 20, 2022 | 09:35 AM
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thats what i figured and why i ended up working on designing my own since in the usa the ram truck transmissions seem to be the most available.
cool swap though, i would like to pick that project back up some day.
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Old Jan 21, 2023 | 04:25 PM
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FYI for anyone searching for this thread, I got ahold of Sound German Automotive last year for some future plans with an Audi 8HP90 and they have a TCU that communicates with the Dodge 8HP70 Mechatronics unit (ZF mechatronic in transmission communicates with ECU entirely over canbus), per the email they only need rpm and accelerator pedal position. Might be worth looking into or maybe I will eventually as I believe you can swap the mechatronics units between manufacturers (don't quote me on this).
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Old Dec 13, 2023 | 11:06 PM
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Originally Posted by 1RMDave
No Sir, all manufacturers have their own pattern and the bellhousings are cast with the trans case so you can't swap them. BMW seems to be the most common variant for swaps currently and even they have a couple different patterns. It's driven by the fact that a lot of ZF swaps are being done in eastern Europe. PMC, turbolamik and htg are all Polish so they don't have the dodge stuff. Even my plate was designed around a diesel Jag that doesn't exist here but it works with some of the gas jobs too.
pmc has both of them listed at diesel but you're saying that they work them same? Looking at putting an ls or an lt in the 13 jaguar I acquired. Pmc was the only company that listed an adapter for a jaguar. I was put off that it was listed as a diesel, and they didnt reply to my request for conformation.
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Old Dec 14, 2023 | 09:28 AM
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Originally Posted by Slick87Rush
pmc has both of them listed at diesel but you're saying that they work them same? Looking at putting an ls or an lt in the 13 jaguar I acquired. Pmc was the only company that listed an adapter for a jaguar. I was put off that it was listed as a diesel, and they didnt reply to my request for conformation.
The gas Jag 8hp70 works with the PMC adapter. I had to buy one to confirm it.
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Old Jan 22, 2024 | 05:07 PM
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Thanks for the reply! The pcm adapter looks like avery well made piece. The black flat plate looks like some sort of drill quide to adapt the ls flexplate for the proper alignment. Haven't mated them together to sort out proper converter distance, but that and the whole controller scanario is next. I'm undecided on whick way to go.... be it turbo lamik or the can tcu. either way i have to swap the mechatronics unit. I was kinda hoping that I could feed it all the Jaguar signals and maybe just maybe I could get the jaguar components to control the trans. At any rate thanks for the input!
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