no affiliation
http://phoenix.craigslist.org/nph/ctd/1068838923.html

 

I think you should pick this up Sid. You never know when you might need it and you could always sell it on if you don't....depending on the condition.

 

I would if I had the money. Id rather put torque bias on my 5 speed, and call it a day. Its local tho.

 

You really seem to hear both good and bad reports from people who have done the 968 tranny swap. My brain tells me that the stock 951 gearing should be pretty good for high tq / hp cars, but I really like the shorter gearing with the S2 r & p swapover. Perhaps the 968 would be the best of both worlds having the taller final gear for hwy cruising. Thing is I am close to the redline down our main straight and that's with the small engine. I have something up my sleeve but that would be considered a major project. Might need to do it anyway.

 

Yeah its seems to be about 50/50. I think Id prefer a 968 tranny with longer gears. When I do a 968, I want to go BIG. If I do a 3.7 Im sure hp numbers will be up there on relatively low boost. The gt2 tranny what you got up your sleeve? Very intrigued about that one. Id spend big bucks on a TA that can take whatever I throw at it. You think 1000whp is possible with a 3.7? Any formula to calculate that?

 

is the 968 box any stronger than a 951 box? hows the ratios compare?

 

Yep that's the tranny I've got in a crate. We will look at that in a little while when we've sorted out a few more things preceding it. Might be a bit tricky to do in a street car, but we haven't looked really closely yet.
If you go anywhere near that sort of capacity you will need something along those lines. It will just break driveline components all day long with planet turning torque. That's why I bought the GT2 tranny, for another project that is in freefall at the moment.
You could get 1000whp but it would take some cash and you would wind up with a very hard car to drive car. Sure you could run low boost and rely on torque but you ain't getting your 1000whp by doing that. You would need to turn up the wick somewhat and probably redesign the suspension.
Still it would be fun to try?

 

Lot's of info on this. The cogs are bigger and therefore deemed to be stronger. The LSD is bigger. You can swap cogs with G50 gearbox. The ratios are quite different to the 951. Obviously they're shorter having one extra. The stock 951 gearing is pretty long and designed for high speed autobahn assaults.
Search around for people that have done the conversion. Some seem to love it, others don't.

 

Yeah at that power thats what I expected. Id like to build something that could attain that kind of power, and the driveline hold up. Something that I can turn down to putt around town, and turn up when I want to go. Very interested to see how a gt2 project unfolds. Seems to be a way to achieve pretty big powers. All that would be great, but Id be happy with 5-600whp. The 951 Ill dial in and leave at about 400, ideally Id like the 968 to be the secondary push the envelope car, if it breaks I dont need it to get me to important places. Seems kinda backwards as far as preservation, because not many 968 coupes 6 speeds. The 968 does represent the next level in Porsche's eyes tho. Definitely let us know as the gt2 project progresses.

 

George D had my brother and I do the 968 swap. He LOVES it. I agree it is a great upgrade but I can only vouch for street driving, no track driving.

If someone need it I would be willing to go pick it up and ship it for a nominal cost. (I'm unemployed right now)

 

It's probably a good conversion as it's been done before and is a bolt on proposition compared to other options. Some pretty serious hp has also gone through them and on race cars. All in all I'd still consider it. Anyone know of the top of their head what top speed would be at eg 7200rpm? I'm too lazy to search.

 

Ah what the heck, here we go. 968 at 6500rpm is pretty much 170mph on the button. The stock GT2 is 195mph at the same revs but you can cusomize this to have the stock 6th gear as your 5th and a custom 6th to nudge 240mph! Quite brisk by anyone's standards. 7000rpm is 209mph with stock GT2 and a 26" wheel.
That seems enough to me. Looking at the graph that I have, you would see just over 180mph with a stock 968 at 7k. Still very impressive.

 

Damn, 240 mph, you think the rest of ours cars could keep up with that? Suspension, chassis, braking, etc? What about the speedo cable for the 968 swap?

 

Nope. Not without plenty of money thrown at it. Theoretically I would have the car stripped and seam welded and probably tube frame some / all of it. Cage it perhaps like the one Chris White showed a few weeks ago. Mahoosive brakes, probably total suspension and driveline redesign and body changes focusing on downforce.
Not much really

 

just happen to have it.

Engine Revolutions Speed(MPH):
1st 2nd 3rd 4th 5th 6th
1000 6.3 10.0 13.9 17.9 21.8 25.6
1100 6.9 11.0 15.3 19.7 24.0 28.2
1200 7.5 12.0 16.7 21.5 26.2 30.7
1300 8.2 13.0 18.1 23.3 28.4 33.3
1400 8.8 13.9 19.4 25.1 30.6 35.9
1500 9.4 14.9 20.8 26.9 32.8 38.4
1600 10.0 15.9 22.2 28.7 35.0 41.0
1700 10.7 16.9 23.6 30.5 37.1 43.5
1800 11.3 17.9 25.0 32.3 39.3 46.1
1900 11.9 18.9 26.4 34.1 41.5 48.7
2000 12.5 19.9 27.8 35.9 43.7 51.2
2100 13.2 20.9 29.2 37.7 45.9 53.8
2200 13.8 21.9 30.5 39.5 48.1 56.3
2300 14.4 22.9 31.9 41.2 50.2 58.9
2400 15.0 23.9 33.3 43.0 52.4 61.5
2500 15.7 24.9 34.7 44.8 54.6 64.0
2600 16.3 25.9 36.1 46.6 56.8 66.6
2700 16.9 26.9 37.5 48.4 59.0 69.1
2800 17.6 27.9 38.9 50.2 61.2 71.7
2900 18.2 28.9 40.3 52.0 63.4 74.3
3000 18.8 29.9 41.7 53.8 65.5 76.8
3100 19.4 30.9 43.0 55.6 67.7 79.4
3200 20.1 31.9 44.4 57.4 69.9 82.0
3300 20.7 32.9 45.8 59.2 72.1 84.5
3400 21.3 33.9 47.2 61.0 74.3 87.1
3500 21.9 34.9 48.6 62.8 76.5 89.6
3600 22.6 35.9 50.0 64.6 78.7 92.2
3700 23.2 36.9 51.4 66.4 80.8 94.8
3800 23.8 37.9 52.8 68.2 83.0 97.3
3900 24.5 38.9 54.2 69.9 85.2 99.9
4000 25.1 39.9 55.5 71.7 87.4 102.4
4100 25.7 40.8 56.9 73.5 89.6 105.0
4200 26.3 41.8 58.3 75.3 91.8 107.6
4300 27.0 42.8 59.7 77.1 93.9 110.1
4400 27.6 43.8 61.1 78.9 96.1 112.7
4500 28.2 44.8 62.5 80.7 98.3 115.2
4600 28.8 45.8 63.9 82.5 100.5 117.8
4700 29.5 46.8 65.3 84.3 102.7 120.4
4800 30.1 47.8 66.6 86.1 104.9 122.9
4900 30.7 48.8 68.0 87.9 107.1 125.5
5000 31.3 49.8 69.4 89.7 109.2 128.1
5100 32.0 50.8 70.8 91.5 111.4 130.6
5200 32.6 51.8 72.2 93.3 113.6 133.2
5300 33.2 52.8 73.6 95.1 115.8 135.7
5400 33.9 53.8 75.0 96.8 118.0 138.3
5500 34.5 54.8 76.4 98.6 120.2 140.9
5600 35.1 55.8 77.8 100.4 122.3 143.4
5700 35.7 56.8 79.1 102.2 124.5 146.0
5800 36.4 57.8 80.5 104.0 126.7 148.5
5900 37.0 58.8 81.9 105.8 128.9 151.1
6000 37.6 59.8 83.3 107.6 131.1 153.7
6100 38.2 60.8 84.7 109.4 133.3 156.2
6200 38.9 61.8 86.1 111.2 135.5 158.8
6300 39.5 62.8 87.5 113.0 137.6 161.3
6400 40.1 63.8 88.9 114.8 139.8 163.9
6500 40.8 64.8 90.3 116.6 142.0 166.5
6600 41.4 65.8 91.6 118.4 144.2 169.0
6700 42.0 66.7 93.0 120.2 146.4 171.6
6800 42.6 67.7 94.4 122.0 148.6 174.2
6900 43.3 68.7 95.8 123.7 150.7 176.7
7000 43.9 69.7 97.2 125.5 152.9 179.3
7100 44.5 70.7 98.6 127.3 155.1 181.8
7200 45.1 71.7 100.0 129.1 157.3 184.4
7300 45.8 72.7 101.4 130.9 159.5 187.0
7400 46.4 73.7 102.7 132.7 161.7 189.5
7500 47.0 74.7 104.1 134.5 163.9 192.1
7600 47.6 75.7 105.5 136.3 166.0 194.6
7700 48.3 76.7 106.9 138.1 168.2 197.2
7800 48.9 77.7 108.3 139.9 170.4 199.8
7900 49.5 78.7 109.7 141.7 172.6 202.3
8000 50.2 79.7 111.1 143.5 174.8 204.9

Having had both I liked the 6 speed, ubt track side you would find yourself missing the tall 3rd and 4th . I felt I was shifting whne I should have been accelerating- Cheers, Mike

just for fun-with a 5spd