Porsche 996 6.2 V8

Author
Discussion

Hoofy

76,360 posts

282 months

Friday 25th May 2018
quotequote all
Mental. bow

scottos

1,146 posts

124 months

Friday 25th May 2018
quotequote all
Thats class! Great to see, would love to see more pictures and spec's.

TonyRPH

12,972 posts

168 months

Friday 25th May 2018
quotequote all
I don't know the various Porsche models, but isn't this the same model at Gas Monkey Garage stuck a V8 into?

https://youtu.be/AZyzIdQsj_A?t=62

https://blog.dupontregistry.com/celebrity-cars/fas...


unclemark123

Original Poster:

878 posts

208 months

Friday 25th May 2018
quotequote all
Thanks all.
To answer some of your questions:

Same model 996 as the Gas Monkey car. Theirs had a 480hp crate motor, mine has a 525hp crate motor (with a few tweaks). I was going to make this look the same, but not sure now.
Nearly everything still works as it should - main thing that does not is the PSM.
Ac works.
Noise - totally dependant on the exhaust you build. There is no off the shelf item. I made mine a little loud - I wanted people to hear the rumble lol
RPM is slightly lower as the LS tops out at 6500, or at least mine does. Depends on the engine. you can make the LS rev to 8k. So I have lost a little top speed.
I used the Renegade kit. Don't be fooled by this, all they supply is the adaptor, engine mounts and not a lot else! so it it all up to you to work it out.
Lots of wiring and integrating. I'm still running the Porsche instruments.
I had to cut a chunk out of the rear chassis -it's a tight fit! (note - nobody has reported any problems with doing this, and there a fair few of these about now, particularly in the USA)
My car runs 2 ECU's.
HTH.

I particularly appreciate the comments on the quality of the work. I spent ALOT of time engineering and making sure every part I fabricated looks as stock as possible.

To the question 'is it quick' - yes ! This is my 2nd LS powered car. My 1st was a 7 litre TVR. The Porsche is not as quick as that, but it does go well. Main point with these big motors is not just the power. They are very driveable, and its easy to make rapid progress with so much torque on tap.

Will try and get some video this weekend. Assume easiest way is to upload it to YouTube and put a link here?

AlanV6

99 posts

117 months

Friday 25th May 2018
quotequote all
wow respect to you! I hear this ls v8 are quite on the light side (is it any heavier than flat6?) so this is a no brainer, i bet it really drives nice and makes rapid progress. did i see corectly is it a 4x4?

obscene

5,174 posts

185 months

Friday 25th May 2018
quotequote all
Absolutely bananas. I commend you sir, it looks awesome.

Dav72D

117 posts

168 months

Friday 25th May 2018
quotequote all
Do you still have the Tamora?

Robbidoo

240 posts

167 months

Friday 25th May 2018
quotequote all
I propose that the title of this thread is the best thread title.

UpTheIron

3,996 posts

268 months

Friday 25th May 2018
quotequote all
Reading threads like this kind of make me wish I'd gone LSx rather than TVR Power 4.5 when it was that time for my Tuscan, but also get me thinking about by 996tt and how this would compare to some of the lower end 9e options given that I'm on 120k and sooner or later some work will be required.

Escy

3,932 posts

149 months

Saturday 26th May 2018
quotequote all
This is awesome, did you do it all yourself?

unclemark123 said:
My car runs 2 ECU's
What functions have you retained the Porsche ECU for?

unclemark123

Original Poster:

878 posts

208 months

Saturday 26th May 2018
quotequote all
Escy said:
This is awesome, did you do it all yourself?

unclemark123 said:
My car runs 2 ECU's
What functions have you retained the Porsche ECU for?
Yup, did it all myself. My wiring integrates with the Porsche ECU to make various stuff work, mainly the tacho. Both the Porsche and the LS use a 58 tooth reluctor wheel, so getting the tacho to work was easy. A big challenge was the wiring - there are no instructions - you have to work it all out yourself. Luckily there is a Facbook page for us LS swappers, and it has been a great help !
Note my car is 4wd.

ChocolateFrog

25,344 posts

173 months

Saturday 26th May 2018
quotequote all
Nice.

I think we'll see more of these as more and more becomes available off the shelf, or atleast more plug and play than it currently is.

Would be perfect for TVR's, rather than spending mega bucks trying to get the RV8 both reliable and powerful.

Eddieslofart

1,328 posts

83 months

Saturday 26th May 2018
quotequote all
Epic engineering Sir ! cool

MUN 802

47 posts

82 months

Saturday 26th May 2018
quotequote all
Absolutely amazing. Wish I had half the knowledge of people like yourself who undertake conversions like this.

Want to come LS my e36 tongue out

Pericoloso

44,044 posts

163 months

Sunday 27th May 2018
quotequote all
You'd have to be a crashing bore not to like this.
It's not like 996s are hens teeth rare.
Awesome,as has been said many times ready.
Top work sir.

ZX10R NIN

27,607 posts

125 months

Sunday 27th May 2018
quotequote all
Superb work what's not to like great power to weight ratio with a more reliable/tune able engine & you're not likely to see another in a hurry.

ZX10R NIN

27,607 posts

125 months

Sunday 27th May 2018
quotequote all
Thought I'd share this thread with you where someone is putting the 2.7T Audi engine in a Boxster:

https://www.pistonheads.com/gassing/topic.asp?h=0&...

unclemark123

Original Poster:

878 posts

208 months

Monday 28th May 2018
quotequote all
swerni said:
Assuming you used the LS7 in the TVR, did you contemplating putting one in the Porker?
I did not build the TVR, I bought it already done, and then spent the next year trying to refine it. It came with a highly modified LS7 converted to wet sump.
Would have loved one in the 996, but they are big £ so I had to draw the line somewhere. One limiting factor if you want really big power in the 996 is the box - they are ok up to around 600hp, anything more and you have to use the turbo box or similar, and they are rare/£££.

Just to note my car uses the crate GM LS3/525. It has a hot cam in it. I actually started with a 430 hp motor, but I changed the cam to the 525 spec so my engine is identical to the crate 525. A little lumpy on tickover, but goes very well.

Gary C

12,441 posts

179 months

Monday 28th May 2018
quotequote all
unclemark123 said:
swerni said:
Assuming you used the LS7 in the TVR, did you contemplating putting one in the Porker?
I did not build the TVR, I bought it already done, and then spent the next year trying to refine it. It came with a highly modified LS7 converted to wet sump.
Would have loved one in the 996, but they are big £ so I had to draw the line somewhere. One limiting factor if you want really big power in the 996 is the box - they are ok up to around 600hp, anything more and you have to use the turbo box or similar, and they are rare/£££.

Just to note my car uses the crate GM LS3/525. It has a hot cam in it. I actually started with a 430 hp motor, but I changed the cam to the 525 spec so my engine is identical to the crate 525. A little lumpy on tickover, but goes very well.
Nice, I bet.a slightly lumpy tickover from the v8 sounds totally in character for that car.

skyrover

12,671 posts

204 months

Monday 28th May 2018
quotequote all
I've went from being totally disinterested in porches, to liking this one.

Excellent!