Hope we see you at Hershey!

 

If you've got an extra 6 grand, you can throw a new Ford coyote motor in it and blow away everything on the road, including the transmission.

 

It will blow the transmission away? I guess it would, if you built a car with two transmissions. Still, full speed reverse has always been a dream of mine... OD, how quickly could an LSx powered 968 go in reverse if it were geared right?

 

well, i'm dedicated on making good on 480~500 hp. i've been assured that i'll be there. got the Fast intake, and new valvesprings on order. all other swap parts are either done or on the way... the transmission gears are on the way from europe and the work will be performed by Scott in a couple of weeks. i can't think of any practical way to get the car goin' much past 190~193 at best, but i think i'll be happy with the car.

one moment.... from Joe's (dfastest) transmission gear thread...



i forgot that Joe's engine pulls 7,000 + rpm. yeah, with that ring and pinion (3.4), he's basically, there.


stock 968 6 speed:

1st; 3.182 :1
2nd; 2.000 :1
3rd; 1.435 :1
4th; 1.111 :1
5th; 0.912 :1
6th. 0.778 :1
final ratio 3.778


968 transmission with audi 2wd diesel 5th and 6th.

1st; 3.182 :1
2nd; 2.000 :1
3rd; 1.435 :1
4th; 1.111 :1
5th; 0.729 :1 (large rpm drop)
6th. 0.600 :1
final ratio 3.778

i've posted this before but i'll give put it up again (cuz i'm basically drooling).


running the new gears, the car will see about 5,885 rpm at 190 mph, like, 6000 rpm at about 193.8 mph....

these calculations are accurate based on the 818 revolutions per mile for the dunlop 275-35-18s.

many guys run shorter tires, ex: (a 295-30-18 is about 24.8")... running the larger 25.6" tires seems to improve the ride significantly, as i'm sure you know, and gives exactly 25 mph per 1000 rpm in the stock 6th gear.... so the speed/rpm numbers i've provided would be correct for the slightly larger tires i'm running....


i think i will enjoy the ultra-tall 5th gear, after all, considering that it will become my most-commonly used gear for cruising the secondary roads. the engine would be seeing under 2,100 rpm at 55 mph.... surely, no good for the track but, it will save a lot on the wear and tear of the engine.

then 6th gear, will see about 70 mph at just over 2,100 rpm....


from all ranges of driving, from easy gliding on the secondary roads, to spirited driving, to flat-out, "f_ck you ****stang" driving, the rpm will look like this:


changing from 3rd gear to 4th at 2,583 rpm @ 35.0 mph will yield 2,000 rpm in 4th gear....

change from 4th gear at 2,800 rpm to 5th @ 49.0 mph will yield 1,838 rpm in 5th gear....

change from 4th/3,400 rpm to 5th @ 59.5 mph gives 2,232 rpm in 5th gear....

change from 4th/4,000 rpm to 5th @ 70.3 mph = 2,626 rpm in 5th gear....

change from 4th/4,500 rpm to 5th @ 78.8 mph = 2,954 rpm in 5th gear....

change from 4th/4,800 rpm to 5th @ 84.0 mph = 3,151 rpm in 5th gear....

flat out, changing from 4th/6,000 rpm to 5th @ 105.0 mph = 3,939 rpm in 5th gear with plenty of room to run from 4,000 rpm to 160 mph at 6,000 rpm before changing to 6th gear.


as Tom (968ls1) mentions, the 1st through 4th gears are really bloody hell once the stock Variocam is abandoned, and more hp comes on board.... but, after taking a closer look, i think i won't find too much fault with running such a tall 5th gear, and it will still be a vast improvement over the stock 968 5th, especially, considering that i will be driving this car all over the country, and i don't wish to beat the crap out of the engine. it is a bit taller than i would prefer,

but, considering that the LS3 can make about 415~425 + ft/lbs of torque in the low 3,000s,

switching from 4th to 5th still looks to be ok.

 

I'm satisfied with the way this thread is developing.

 

if we get into a serious discussion of reverse,
i fear the 9-2-8 guys will be reminding us they've got that area well-covered...
anyway, thanks for the nice segway for my gear ratio, 190 mph attention ***** posting....

 

While I think a Mod motored version would be the way to go if I ever wanted to attempt this swap (I think it is almost sacrilege personally),,, i think you would play absolute hell at any attempt to get a mod motor shoe horned into one of these cars. The block being 90* instead of 60* means it is wider than the LS motors by several inches.

 

Uh huh.

 

 

Ok then! I'm on board, no offense BJ, we just had to get that out of the way, and I'd be a liar if I said I didn't admire both your gentile sarcasm and persistence, many new owners would have thrown in the forum towel by now. Thanks for the follow up. Now I can save my popcorn for the Turbo upgrade. Good Luck.

Someone mentioned 968 motors? Did any read the latest Excellence? Page 113 there is a 86 with that upgrade and I really like the sound of that. What a great little sleeper.

 

imagine the lighter, 944 with a 968 motor and Carl Fawsett's supercharger.

there's been about 7 or 8 968s in wrecks the past 3 or 4 months. so there's plenty of engines around.

 

No harm, no foul.. Im thick skined naturally... How about a turbo charged 968 motor? Now THAT sounds like fun....

Why supercharge as opposed to turbo?

 

Oh... almost forgot...

Its Go Time!

 

You don't need to super charge or turbo a 944 /968 transplant specially in an early car if the coversation is done rigth.Acceleration & top speed will make you wet your pants.

 

Barnaby,

the reason for supercharging is the 968's heavy breathing/4 valve w/ variocam architecture and compression are nearly perfect for supercharging.... Carl's design runs about 5,000 dollars, and requires only about 6~8 hours of shop time and minor/if any tuning. after dumping the cat, and running the correct diameter straight pipe, you could be looking at about 335~340 hp at the flywheel.

turbocharging requires changing to beefier 944T or late 968 connecting rods and lower compression pistons just for starters. and far greater expense is required to keep 4 valves/cylinder.... a proper Turbo conversion for a 968 can easily run close to $20,000 and beyond if you intend to do it right by sourcing new parts for the engine, new turbo, intercooler, wastegate, etc....

but turbocharging a 3.0 allows you to make silly power even at moderate boost, which is exactly what i would do (big engine/low boost) if i did a turbo project.... and i would choose like an '86 or later 944T for the roller, cuz it's lighter than a 968, but still has plenty of goodies....



http://www.youtube.com/watch?v=0uNEp...eature=related