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How To - Tips => Engine & Transmission => Topic started by: fsoriano2828 on July 15, 2014, 02:34:26 AM
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Hello forum.. I need of some help.. Can either the audi or porsche tranny be mounted to a ls3 engine? and which one??
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The TripTronic is a decent choice and it is set up for paddle shifters. However, a common complaint is that it shifts too slow. I would choose a PDK version from a 2009 or newer Boxster instead. I believe the Cayman uses the same transmission. Renegade Hybrids has done LS3 and LS7 transplants into the Boxster so they should have everything needed: http://www.renegadehybrids.com/ (http://www.renegadehybrids.com/)
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You will probably find it difficult to get a controller for the Porsche tiptronic. I do an adapter for the Audi 5HP19 automatic to the LS engines and there is a controller available for that. I haven't priced the PDK but I suspect they are going to be rather expensive and I am not sure anyone has a controller for them. I also do adapters for the manual transmissions from both Porsche and Audi.
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why not just keep the transmission the LS comes with and get mastershift
its pricey but i think it's what you're looking for www.mastershift.com (http://www.mastershift.com)
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The LS engines don't come with a transmission suitable for mid-engine use except for the LS4 which only came with an automatic. The LS4 can be mated to the F40 from the G6 if you want a manual.
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Thank you all for your input..
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One more thing.. besides the adapter plate, what would i need to make the ls3 engine work with the Audi 5HP19 automatic (parts, etc)?
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It will be going on a fiero stretched chassis...
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My adapter kit includes the adapter plate and an adapter to attach the torque converter to the LS flexplate. Then you need a controller and wiring harness. That is available from Advanced Automotion. They can also provide a rebuilt transmission with some heavy duty parts.
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The PDK is expensive - no doubt about that. The Audi probably won't be cheap either. Can't a Porsche stock controller be used or is it integrated into the main engine computer? Why is an aftermarket controller necessary?
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A rebuilt Audi with controller will be around $4000. The controller for the PDK is integrated with the engine and a lot of other systems in the car as is the Audi controller. That is why an aftermarket controller is needed. I haven't priced the Porsche transmission by itself but I suspect it will be a lot more than the Audi.
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I bought a used 5hp19 on ebay, they're pretty cheap. I will soon buy the controller directly from powertrain control solutions who is the company that actually makes it. pcs tcm-2000. They're very helpful and answered all my questions in detail.
Then you can think about rebuilding it with stronger parts. I don't think $4k is necessary but may be easier that way.
The only stronger aftermarket part I've heard of for the trans is the reverse drum, maybe they recently started building other parts, I don't know.
Advanced Automation actually told me NEVER to use this transmission with a v8 even after rebuilding it as it will only be destroyed, so it is odd to me that they would now promote it. I decided to do it on my own since they were completely against it no matter what the cost. In fact, 034motorsport told me the same thing. Too weak to handle a v8 even with our application. I figure the transmission isn't expensive so I'll give it a go + it's my only option.
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You could always make weak axles.... That way if you hook up hard they might break before the trans.... ::K
Though a rev limiter might be something to also think about in that situation....