Jeff, you could try a 90 degree elbow right after the TB and see if that works. Not sure but engineering something to solve all of these issues can't be too difficult.

I've attached the 930 wing. It still has work to be done. It functions perfectly. We are going to do some work at the back where the turbo base ends to make it appear longer and wrap around the back. Hopefully it will look respectible.

http://forums.pelicanparts.com/uploa...1295478850.jpg

http://forums.pelicanparts.com/uploa...1295478975.jpg

http://forums.pelicanparts.com/uploa...1295479083.jpg

http://forums.pelicanparts.com/uploa...1295479151.jpg

http://forums.pelicanparts.com/uploa...1295479237.jpg

I remember seeing an aftermarket turbo wing where the wing itself was almost the same as factory, but the base went straight down from the rear rubber to accommodate a bigger inter cooler.

Maybe someone has a pic

-Jack

Jack, they are usually solid fiberglass. Wait till this is finished. It should have similiar characteristics. I will be keeping the rear bottom portion of the wing open for air flow to exit the fans and out the back. Everything is cooling wonderful but... it is winter.

i would love to take a ride in that. My buddy has a 2000 SS Camaro with heads and cam that makes 420rwhp thru an auto trans. It's run 11.6 @ 121mph weighing 3600 pounds. Your car would be a 10 second daily driver with some simple mods.... Brutal

Howdy,

How about "after" measurements?

I'm very interested. I think the naysayers will be surprised.

H

Still have to put on the rocker panels. Its been a long winter. I actually think I may have to add some weight to the rear. (Which I won't of course) Everything is sitting a bit higher. I will take out the tape measure soon. The weather is warming up. Can't wait to take it out again!

Don't add weight. Just reindex your torsion bars. If I were you, I'd take it someplace and have them do a proper corner balance with scales.

I think I may go the same route. I'll install the radiator in the front though. Cutting the car - again - isn't a problem for me. I've learned that I can weld back on anything I cut off. So hack away. Plus, I still don't understand why so many people say that cutting the car for an LS1 conversion is bad. Most of these people are impressed by "atrocities" like in the pic below. Also, what does that engine weigh compared to an LS1? What's the HP to weight ratio? Plus, how driveable is it compared to an LS1?

H

http://forums.pelicanparts.com/uploa...1300292288.jpg

It does seem like a lot of Porsche 911's get hacked for 911 engines but put a ls1 in and its the devil's work! I think the weight overall is down - perhaps 50 lbs or so. Once I get the car all loaded I will have it weighed again. 99 percent of the swap was from the rear. The exception is taking out the oil cooler/fan on the front passenger side along with the lines and the oil tank in the rear passenger side. Nothing else in the front. Good luck!!!!

As another guy who loves Porsches and Chevys (note the '67 Chevelle in the back of my basement), I really like what you are doing. No one seems to criticize Alois Ruf's V-8 powered 997. What an amazing machine that is!

http://i81.photobucket.com/albums/j2...SCHEATL004.jpg

My brother and I also took some of flak here for "cutting up" what was a really nice G50 coupe to convert it into a IROC-style widebody. It turned out nicer than we hoped and garners a lot more attention than it did in stock form.

You are doing yours right and the bottom line is that it is your car...to do with as you want.

I'm looking forward to seeing it finished. Those LS engines are great. Had a '06 GTO with a 400 HP LS2. Ugly car, fabulous powertrain.

Kudos on a great build! :)

Smashed the oil pan
 

http://forums.pelicanparts.com/uploa...1305340128.jpg


This is what happens with lots of torque and a couple people in the back of a 911 going for a 0 to 60 run! Somehow, the torque was just a little bit too much. $250 dollars later with a new oil pan and all is well. The pan hit the pavement. Not sure how that is possible. Thought maybe a snapping turtle got in the way but it was pure pavement. Torsion bars may be in the future. A skid plate is being added...

The car has been running very well. Temp has not gone over 200F. Fan kicks on and drops the temp to 180F. Temps here in NY have not been over the mid 70's yet. We shall see how this monster cools when the humid summer air hits.

Great build! Just subscribed. When do we get the 'after swap' numbers?

Mike

subscribed and question
Aren't there companies that make trans-axles that can easily handle the torque and fit in this type of conversion? Some reading on this and it seems that even with a G50 or 930 tranny the result has iffy capability. I read somewhere that at 930 tranny can be modified to be bullet proof but the cost was huge ~ $10k. Maybe the aftermarket or racing trans-axles are also similar cost.

Seems kind of strange that you would increase the hp so much over stock and not bother to have upgraded the suspension and brakes to match. I guess you just learned why it's needed. lol.

Very neat.
I am always amazed that people poo-poo the engineering marvel that is the Chevy small block, especially from people that like the "engineering" of Porsche.

I can't think of any other engine that has reliably filled as many roles as it has. They may not be placed in the best cars, but small blocks are great motors.

I've been following your build for some time now, and I like the car, I like your attitude, and I'm glad your plan was not changed becasue of some the negative comments you've gotten. I bought an 80 911SC a few years ago and really considered the V-8 swap early on. My friend who was a Porsche factory mechanic talked me into a total rebuild back to stock. I've loved the car ever since but have often thought the swap would have been great. I've got a 750 HP Mopar, I've put a 350 in an RX-7. I've done a 327 in a Chevy Luv, and I've done a 383 in a Monza. Thru all these swaps, there has always been challenges and issues that crept up, just as you have found in this build. I commend your tenancity! Good Luck!

To answer a question or two, the G50 is pretty much bullet proof. The tranny rocks. I wish I had higher gears but that is probably a 10K upgrade. I upgraded my struts when I put in the engine. The problem I had was that 2 spanish women in the rear seat added enough weight where it was not needed to lower the rear enough for Murphy's law to take over. The standard Porsche brakes are awesome. I like the red brakes but at what cost? I am going to put a skid plate on the car. It just makes sense. Torsion bars are the other real answer but from what I understand they take at least an entire day to put in. I am going to assume that if I keep the spanish women out of the rear I am all set but... if for some reason I break another oil pan I will re-think my options.

I WISH SOMEONE WOULD ANSWER THIS QUESTION.

I am so impressed with the amount of engineering and work that goes into this swap, but I am curious how much better the performace is. How fast will this thing be 0-60 and 0-100. I'm thinking it has to be like a 4.5 second car now. I mean there is a 770 HP 911 Techart that I think is about a 3.7 0-60 and it's completely modified and tricked out in everyway. This car is a beast, but still I have to know how much it increases the performance, and is the handling suffering?

0-60
 

Well a 2008 BMW M3 runs 0-60 in about 4.2-4.5 seconds. The Bimmer has 414hp but weighs 3650 lbs. Yan2947 says he's running around 375hp but has to weigh at least 650 lbs less. That's 18% lighter. 18% less hp would be 340, plus the 911 has superior weight distribution for launching/traction. I would think it would be at least that quick. I don't see where the handling would be effected at all. The LS7 should weigh less than the 930 motor.

Tom Viers
Cape Girardeau, MO

i am installing a modified ls7 motor in my 78 930 and the rear of the car will have to be lowered from the height with the 930 motor. the car will weigh about 2300 pounds and the engine dynoed at slightly over 700 chp and over 600 ft lbs torque. rev limit is set at 7200 rpm.

I have to admit I am not a race car driver. I have not gone to any tack and the roads I have timed my car have been two lane country roads. The biggest problem I see with reaching some low 0-60 times is having to change gears. My G50 gets to about 30 MPH in 1st gear and then just through 60 in second. I actually had a faster time of 4.57 just by starting in 2nd gear. If anyone could launch the car faster I'm sure you could shave some time off easily. I could spend some big bucks and get some tall gears and my times would be incredible. The reality is that I like my car. It has a lot of power and is fun to drive. I don't plawn on racing it in a Nascar event. Perhaps a car show, taking the women out to dinner and picking my son up at school. The car is a blast. Everyone looks when they hear the motor and then their look turns to disbelief when they see its a 911. Some of the builds going on right now are just amazing. Mine is just average. The car is running well. Yesterday reached the 80's and the car drove like a charm. The coolant temp remained below 200 but I didn't do any launches. Still, the car is cooling well. Perhaps the electric fans will come on a bit more.

As far as handling goes... The car handles incredible. I don't see any change. With the exception... This car has a lot more power and one must re-think the same curves in the road. Its a lot easier to go faster thru the turn. The car handles the same but if you are 30 miles faster then with a 3.2 one must watch out and not get to cocky. I will try a 0 to 100 soon...

DAMN you guys are making me wish i didn't have my 930.... the 911 / LS1 combo is a match made in heaven

I'd love to have an under 5 second time! I wonder what the ceiling is as far as lightening the 79 SC to try and improve the 0-60 times. For instance, If I got ligher wheels, race seats, removed all the power mirror and windows, A/C... Running a 3.0 with the 74 911 OEM Exhaust and muffler, no air pump, short shift.. How low is the lowest times I could get down to. I mean I still have the CIS, and tame cam. Seems I would hiit a wall eventually. (not physically :), I mean I'd hit a point where there is no more benefit to being any lighter) I kept hearing about changing the Gearing but I hear that if I do that i'll have weaker gears and the potential to break them is increased. Even if the Corvette engine is not a 0-60 monster, I bet the 0-100 would be incredible. I could just see taching out 1st then hitting the long second gear and the pull would be comparable to a turbo ...

Drove the car to NYC and back. I had some high speeds and some light traffic conditions. The weather was very humid and was about 87 degrees. On the open road the car remained just above 200 degrees until I gave the car some gas. The temp moved as high as 220 at about 80 mph and above but never went over that number. Any time I went below 80 the coolant temp stayed around 200. When I was idle it always dropped between 180 and 200. City driving was always 180 to 200 degrees. I still don't have my front spoiler on - just lazy - or chin spoiler so at high speeds I could feel the air go under the car. At 125 I was a little nervous...

911's are not dragsters. the engine in the back screws that up. the best part about the engine in the back is being able to get power down coming through and out of a corner. do a DE day and you will never complain again about 0-60 times.

From what I have heard the best combo is the 930 4spd and the LS1 or LS2 or LS7. Renegade says that the best car to do is the 930, cause you have the 4spd, the brakes, the suspension and the wide-body for more rubber. I am looking for a cheap 930 to do a LS7 on.

911's are normally not dragsters. Put an LS1 into it and your whole idea of what a 911 is changes. As far as cornering - it does that too!

i'm a bit baffled by the statement that a rear engine car makes a bad dragster. It's great weight transfer

Its a very interesting idea. I have considered it over the years. However, heres the thing. There is always a sweet spot of usable horsepower...

An LS* series engine does weigh LESS than a porsche flat six. So all of the handling arguements really go out the door. This is what got me seriously considering the possibilities. However, the LS engine does not sound like a porsche (which is seriously what has kept me from doing it). I am not a purist and wish you well on your endeavors. However, this is where I bring back my initial assertion. My previous car ... 74 911 RS conversion with a 3.6 was amazing. With around 300 HP the car was crazy fast. It was 2348 pounds b/c I had AC. However, it would hit 60 in 3.6 seconds and would just hook up and go. I have doubts whether a guy could do better 0-60 times with even 100 more hp due to lack of traction... All I had to do with the 3.6 was hammer it after a sane start. What I am getting at is the LS series conversion is not really cheap. You could probably do a 3.6 swap for close to the same money and have all the power the chassis can handle.

Anyway, enjoy ... its your car make it the way you want!

I should have read further into the thread before replying SmileWavy Enjoy. I am curious to know your 0-60 times..

The tail transformation is complete. Fiberglass cap at the end of the radiator bolts right on and off. I know its not stock with the add on, but it hides the monster below pretty well.

http://forums.pelicanparts.com/uploa...1309385725.jpg

http://forums.pelicanparts.com/uploa...1309385849.jpg


http://forums.pelicanparts.com/uploa...1309385979.jpg

http://forums.pelicanparts.com/uploa...1309386066.jpg

Nice!
 

If you ever get to Long Island NY let me know. I have a 77 targa widebody that has a R.H. kit. 377 c.i. afr heads and edelbrocks pro flow f.i. almost done with the body now. The motor makes 425 h.p. and has a 78 930 4 speed tranny. This winter maybe twin turbos!
I like the forum but keep a low profile cause the purists like to tear u up. I love the body of the porsche, and nothing like cheap h.p. of a chevy!
Nice ride! You made a good car a super car now!:cool::D

Just added a skid plate under the oil pan. It weighs 13 lbs and should save my pan from any more "accidents" Here are some photos:

http://forums.pelicanparts.com/uploa...1316556159.jpg

http://forums.pelicanparts.com/uploa...1316556254.jpg

http://forums.pelicanparts.com/uploa...1316556334.jpg

http://forums.pelicanparts.com/uploa...1316556430.jpg

http://forums.pelicanparts.com/uploa...1316556728.jpg

I will need to put in torsion bars because the car was squating too much with the torque. The skid plate should solve me destroying the oil pan but I still wanted to upgrade the torsion bars. Any ideas by any of the other lsx conversions... Anyone else hit the oil pan?

Hello Yan

What about a oil sump from a Corvette? it is 1 inch shallower and this should help. Here is a picture of my sump after the first test drive (see the scrabe in the mittle) http://forums.pelicanparts.com/uploa...1316716742.jpg
And this was under test drive with only 70% throttle. I think i will upgrade to 26-28 mm torsion bars but i first have to look what i have in the car now. Have a nice day

Sirhiss,

I'm sure you saw the photo on my previous page. Last one on the bottom with the smashed oil pan. I am not sure sure that you would save an inch with the Corvette pan. I will let you know what I find out about the torsion bars also. Not sure what I have but they most be stock for the 89 911. Good luck!

Some of the turbo guys (same problem with torque) use coilover rear shocks in addition to torsion bars to combat squat. One of the advantages of doing it that way is the ability to have a progessive or staged spring rate so the car will still ride nicely.

One 0 to 60 run today on a nice fall morning - 0 to 60 in second gear only, 4.27 seconds. With a little practice I will be sub 3's. My stock Ls1 seems like plenty of Sunday Driving fun!

180 degree headers
 

Just to mix up the Porsche purists I built a set of 180 degree headers for my V8 911.

EP Slick - Tucsonhttp://forums.pelicanparts.com/uploa...1316965288.jpg

This is all very cool. I am thinking that the this LS1, a 3.6 or even a 3.5 big bore conversion are all going to be extremely fast (sub 4 secs) to 60 in a light car assuming they all have the same gearing.

It would be very interesting to see an LS1 against a 3.5 big bore and a 3.6 conversion on the strip in cars weighing 2500lbs or so.