Porsche 997 AWD V8 Turbo

Porsche 997 AWD V8 Turbo

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DT8R

Original Poster:

56 posts

35 months

Tuesday 9th May 2017
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Hi, My name is Angus (Goose) originally none on PH name Argoose but for a long time was very ill but like all petrolheads I am back and wanted to say hello with this.

I am not a business I am a private developer that enjoys building cars. This is not my first LS Conversion I have modified a number of cars using the LS1/LS3 power plant. My first project car was a TVR Griffith, which was done over seven years ago by a developer in stoke.

But have always wanted to do a Porsche over two years ago I started investigating the 997. Why, well it’s no secret that Porsche have had lots of problems with their engines. I was shock at the cost and the more research I did the more I wanted to do this project. As we are aware from discussions with the US this is the first 997 to have a LS conversion.

Project Car
Purchased 997 C4 2006 from Porsche specialist with a problem engine. Sold the engine to nice chaps at Hartech so nothing is wasted. We have used the existing gearbox with an adapter plate and the existing AWD system. We have continued to use all the existing instruments and Porsche engine management systems but have removed all the Porsche ancillaries. We lost so much weight from the removal of the Porsche engine and ancillaries that we had to fit smaller springs at the rear so that the car sat as before.

A standard LS3 with a good road/race cam can give around 520BHP with great torque and good economy. In addition to this we have added a turbo and we are looking for around 600bhp. Craig at Dyno Torque has carried out all the development work with testing and tuning at Emerald.[url]

|https://thumbsnap.com/AndZNjLD[/url]



Edited by DT8R on Thursday 18th May 10:22

DT8R

Original Poster:

56 posts

35 months

Tuesday 9th May 2017
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D4MJT

1,031 posts

103 months

Tuesday 9th May 2017
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Moooooooooooooaaaarrrrrrrrrrrrrrrrrrrrrrrrrr

of everything please. Pics and info.

Is it not a bit tricky with less weight over the rear wheels?

luggie

14 posts

174 months

Tuesday 9th May 2017
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Love it biggrin

lukeharding

641 posts

34 months

Tuesday 9th May 2017
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This is cool. Think I've seen a 993 with a V8 but not this side of it. More is definitely needed!

DT8R

Original Poster:

56 posts

35 months

Tuesday 9th May 2017
quotequote all


The LS3 fits nicely into any 996 or 997 and you will be shocked that the Porsche engine is much heaver than the yank V8

DT8R

Original Poster:

56 posts

35 months

Tuesday 9th May 2017
quotequote all

DT8R

Original Poster:

56 posts

35 months

Tuesday 9th May 2017
quotequote all

sleepera6

4,739 posts

42 months

Tuesday 9th May 2017
quotequote all
Love it!

Will be a monster.. good on you and congratulations on recovering!

J4CKO

27,995 posts

145 months

Tuesday 9th May 2017
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I think this is one of those things that people have a perception of how it will be, i.e it will mess with the handling and is in someway wrong but based on what I have read it seems to be a good upgrade, even before adding turbos.

After all, its not like there is a shortage of 911's with engine problems, is the cost of swapping for an NA engine comparable to getting the original engine rebuilt ?

DT8R

Original Poster:

56 posts

35 months

Wednesday 10th May 2017
quotequote all
J4CKO said:
I think this is one of those things that people have a perception of how it will be, i.e it will mess with the handling and is in someway wrong but based on what I have read it seems to be a good upgrade, even before adding turbos.

After all, its not like there is a shortage of 911's with engine problems, is the cost of swapping for an NA engine comparable to getting the original engine rebuilt ?
Thanks so much for highlighting this it is a conversion that is controversial but the developer has done a fantastic job and I have been delighted with the cars performance it's amazing. People have a real perception of what right or wrong and get genuinely upset that someone would do this to a 997 and that will not change. Its the cost that makes this project really makes sense. When you start looking at basic engine rebuilds or replacement doing it right isn't cheap. I spent over a month using the donor car and getting quotes to just repair the existing engine and this doesn't even take into consideration the massive performance gains.

If you then add performance gains then cost for a Porsche based solution can be very expensive but that's what people will pay. The Porsche LS conversion is not expensive if you want just to have your broken engine replaced with a brand new engine and ancillaries. This conversion make a lot of sense and will continue to make sense long after the Porsche engine is scrapped. Servicing any LS power plant is not expensive and is very easy on the 996/997 conversion.

Then we you consider the basic performance gains then here is some basic s comparisons. The current 997 GT3 RS is Curb weight 1360 kg (2998 lbs) and has a performance of 493 bhp / 368 kw @ 8250 rpm with rear wheel drive. The 997 Turbo S Curb weight 1585 kg (3494 lbs) and is AWD with 523 bhp / 390 kw @ 6750 rpm. We have developed a 997 LS3 V8 Turbo Curb weight 1396 kg (3077 lbs) and AWD with over 600 bhp/447kw.

Cost of LS performance is really cheap in comparison.




Edited by DT8R on Wednesday 10th May 02:18

Psimpson7

1,065 posts

186 months

Wednesday 10th May 2017
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fantastic!

HybridAero

842 posts

45 months

Wednesday 10th May 2017
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Crikey, amazing effort! Be interesting to see how fuel efficient it is now as corvettes with this lump can get well over 30 mpg on a cruise. Not that that's a priority. What kind of costs are involved in comparison to a rebuild?

Mike335i

2,508 posts

47 months

Wednesday 10th May 2017
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This is a fascinating project and I am very intrigued to know how it pans out. Is this a manual gearbox or a tiptronic / pdk?

I know RUF did a V8 911 with the RGT-8, but I know very little about it really. I would love to see some videos of this when it's all sorted. I bet it sounds epic!

SuperVM

1,097 posts

106 months

Wednesday 10th May 2017
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Absolutely incredible! I love LSes, though sadly the only example I've owned was in an absolute dog of a Monaro. I also love 997s and see this as a very worthwhile conversion.

sagarich

1,008 posts

94 months

Wednesday 10th May 2017
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This is fantastic!!!

Magic919

14,126 posts

146 months

Wednesday 10th May 2017
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Nice to see Craig involved with a 911 V8 conversion. Have seen a couple of his previous conversions when I ran LS-engined cars.

Veeayt

2,823 posts

150 months

Wednesday 10th May 2017
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Great car? But why the determination to go 4WD? Chasing drag strip times? Safety reasons? Weather conditions? Will be interesting to know.

leoparker990

15 posts

28 months

Wednesday 10th May 2017
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Great car and this is really a fantastic project.

dom9

6,819 posts

154 months

Wednesday 10th May 2017
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Fantastic - on my fantasy engine conversion list!

Would love an NA LS3 997 C4S with the aerokit in Cobalt.

Not that I've thought about it much wink