philooo

So far what is sure is that NOBODY DOCUMENTED a build.
Many said they did it, without saying what did they achieve and what was not complete.
Nobody posted a list of parts required with a proven finished project.
I think all the build I have seen were incomplete, always some sort of communication with the OEM functions were not working.

Getting the engine to fire up and drive the car is "easy",making it complete and working just as the OEM equivalent, that is the trouble.

If you want to drive the car without AC, and with aftermarket cluster, then yes may be.
The communication with the OEM instrumentation, HVAC is certainly the hardest part.

alpine003

Have you looked on the ls1tech.com site? There is plenty documentation. Dunno if you're looking for hand holding step by step detailed guide though. Also, everyone has their own definition of what "complete" is I suppose.


What I've seen most guys do is to use two ecu's. One to control the motor and the other for all other functions like cluster integration, warning, etc.

dcdrechsel

I am about 80 % done -and it has not been that hard a conversion or that costly .The remaining 20% is the normal debug and passing emissions tests .No kit -the biggest cost item ( outside the engine) was the flywheel ,bellhousing and clutch components $1680 delivered .
If the criteria for a successful swap is not cutting the engine lid guess mine won't qualify either .
Without a custom intake manifold I could not figure out how to not cut it .
I am not sure you will ever see a real kit -the cost to develop a complete swap manual would be really expensive .There aren't a lot of parts that need fabrication to offset the cost of developing documentation so basically it would be an expensive book .

philooo

I am surprised nobody at least documented their build on a forum.

I'd love to see some step by step yes. Sometime the smallest thing can be the biggest challenge. I think the reason why we have not seen more build is because of this lack of documentation.

DCDRESCHSEL, I have so many question for you, but let's start simple: did you manage to make the cluster to work ? I mean speed, rpm, fuel gauges ? ABS should be a tricky one too ?

alpine003

Once again, have you looked on ls1tech forums? All your questions have been answered there already.

kmagnuss

I can't remember his name but there's a guy on here who has a pic of a LSX motor in his 996 as his profile picture. He did the swap, documented it pretty well, and everything worked just fine. He sold the car later on and the guy wrapped it around a pole and died. Like I said it's been done. Your google-fu needs work.

911Dreamer

I joined the LsTech forum just to follow Fieroflys build progress, I have been reading into this swap, it seems 4 members have done this swap. But unsure if they got the electric bugs worked out? Fierofly started a thread there back in 2013 and it seems he is still working on his car to this day.

Those videos I put up seem to show a complete running cars with everything working, but after being on the Lsforum, I have to question if there is a running car with no issues. Reg V8 has a kit, but one is left to work out the electric bugs when mating the V8 to the 996. For the price of the kit they sell, I would expect the bugs to be worked and the 996 to have no issues.

5CHN3LL

White out.

dcdrechsel

Philooo-the instruments are ok - as Alpine stated all that stuff has been handled .The hard part for me is getting the emissions drive cycle working correctly .The challenge is always on the Porsche side getting basic technical info .For example :Vehicle Speed what does the ABS output look like ,how many pulses per mile and what kind of signal. I have not found a person yet who knows .
There is a whole other universe out there on the LS side where it is easy to find info and people who will share it .It's like the Aircooled crowd on steroids .

As far as documenting a build many have started and then concluded it takes too much time except for fierofly who has done a fantastic job and provided a lot of help for the rest of us .

911Dreamer

You should post your build? I am sure others would like to see the outcome

white out

There is PLENTY of information for the swap available. Further, many of the guys who have done the swap gladly answer questions. If you're looking for someone to hold your hand for the build, then you're going to need to pay someone/shop to do it as there are many aspects of these swaps that people do not document because it's general swap info.

Specifically:
6speed online
Rennlist
LS1tech - multiple builds & thread specifically for 996 swaps
my blog - http://996ls1.blogspot.com/

As far as electronics:
- speedo: all Porsche (don't have to do anything)
- rpm: tap tachometer signal wire with LSx pcm RPM signal wire
- fuel: all Porsche (don't have to do anything)
- temp: thread coolant temp sensor into secondary water temp port in head
- abs: all Porsche (don't have to do anything)

dporto

^That^ Pretty much sums it up eh?

philooo

that is informative, I was not aware that all these points were actually not a problem.

I recall whiteout did a pretty advanced build. thanks for chiming in by the way

@whiteout did you ever find out why your car crashed ? I recall you mentioning the buyer of the car crashed it somewhere in florida.

Anyways I have always been curious about a swap, I'll go check out @ fierofly. Would be a really cool project to do if I had the time...

I just love the 996 so much, I think it is really a good platform to make a project like this as I could have seen myself keeping my car forever, for sale, but I may be back in a few years to do a LS swap for fun

Slakker

Or it could be due to a lack of demand for Porvettes.

white out

No clue what happened, but he died in the car.