Hey all. I am not sure how much power will be needed but I am looking to bury the 150 MPH speedo in an A4 '95 Z28 in the 1/4 mile. The car also needs to be streetable and reliable, as it will be driven to work on a regular basis. I know a few of the basics I'll need but I need to know what some of you serious horsepower guys would do to hit 150 in the 1/4.

I know I'll need a built motor, trans, driveshaft, rear end, upgraded fuel system, different engine management system, upgraded suspension, sticky tires, and one helluva big turbo or supercharger. I'm sure I left a few things out but I think I've got somewhat of an idea of what it will take.

This isn't much of a concern but it would also be nice to have as much of a sleeper as possible. Please toss some suggestions at me. I know this will be an extremely expensive project but I think I'll be able to do it. Thanks a lot,
TJ

 

Wow that is some serious mph you are shooting for The hp needed will depend on how much your car weighs. For example my buddy is running 9.7s in his GN at 141 mph. The car with him in it weighs 3750 lb. As far being an everyday car I would say that would be the tough part. I am sure whatever setup you plan on going with you will have to run race fuel or turn the timing down (and boost) and run pump fuel. I think with what you want out of your setup that a turbo or nitrous would be your best bet. The thing about superchargers is that in order run lower boost you will have to swap your blower pulley. I would think once everything is said and done you will have well over 30K invested in mods. This does not include labor.

 

Wow that is a lot of money. I wasn't anticipating spending that much but I think it would be worth it in the end. Do you know of any reputable performance specialists that could pull this off for me? Thanks again,
TJ

P.S. the car will be about 3600 lbs. with me in it.

 

I basically shot him a low estimate because most people do not understand how much money goes into these cars to make them go fast.

 

Actually I was expecting somewhere between 25 and 30k. What times do you think I could get by spending 25k for everything, including labor? I can't make myself spend 42k for this project, it just wouldn't feel right. Thanks,
TJ

 

You guys are missing the point, Yes with all the money he could go that fast, but he wants it to drive it everyday and not brake it. T 56 wouldnt hold up for long, you could get a jerico 4spd, but thats not very streetable, You would need one hell of an auto to hold up to that, and a bigass converter!

You also said that you want to keep it as stock looking as possible, you are going to need atleast 20000k in body and suspension mods alone if you want to hook up and not be tubbed.


In my mind, with that much money I dont doubt that you could go that fast, or even faster. But to realisticaly want to drive that car everyday and have if reliable, I dont think its gonna happen. You,d end up passing everything on the road but a gas station!

 

My stock T56 holds fine with my power. How fast is my car? Well first its my daily driver in the summer. Second its never been at the track, but a buddy that runs 9.0's at 150mph, Im right with him at about 20psi. I drove my car all last year making this power and never had any problems with the tranny or anything else. I'd trust my camaro over my winter daily driver with is a talon

 

Turbo loven

 

Like you said, you have never been at the track, Pull wheels with that trans a few times and see how it holds up. They dont like being powershifted either. Its all about how you drive a car. The track will break ur car 2 times as fast as the street. All my friends with new vettes that have power behind them eat em up, Im not knocking the trans at all, I love them. But if your planning to run low 9s, its not the trans of choice.

Aggie, how much power r u putting down now? And how much did you put into that trans ?

You can make them last if you plan on babyin the car, but if you shift like me, and race as much as me, its not gonna last. How many high 8 low 9 cars u see with that trans? Not many.

 

Let me get this right, your wanting this super fast car and your not even going to work on it? You can just about take the allowable money and cut it in half because Labor will be at least that much. After that you won't have nearly as fast a car as you planned...

If you can't work on it, and you want it reliable, leave it stock! Buy a GSX 1300R and do your 150mph quarter.

 

the newer ones are breaking alot more then the lt1 t56's even without rebuilding with good stuff inside. I believe tanner is pulling some 1.2x 60' fts with the t56...

 

Stupid me, I forgot that whole labor thing. Wow, I had a blonde moment and I'm not even blonde Have you guys done most of the work to your own cars? If so I definitely respect that because it definitely takes a lot of "know how" to make a car that fast.

If I had some good instructions or online help from you guys I think I could do quite a bit of the work myself. Will an upgraded 4l60e hold up to a 140-150 MPH 1/4 mile or would it blow up like a friggin grenade the first time I floored it? Also, I have heard that a TH350 or TH400 will hold a helluva lot of power but they don't have an OD.

BTW, I just want what would "probably" be a 150 MPH car. I might go to the track with it once a year maybe. I just want to be sure I can take any street car (or bike) that lines up next to me at a light. I will only romp on it every now and then just to feel that sheer power for a couple seconds. Either that or leave a huge cloud of street tire smoke behind me

Thanks for the input, guys.

 

i highly doubt a 4l60e would last with that kind of power for very long at all.

the 4l80e can take a lot,but it isnt cheap,best bet would be a th400 with a gear vendor od unit.

i have a consistent 150+mph "street" car in the garage (roomamates car) and while it is streetable,will run on pump gas,it isnt something i would want to drive with any frequency.it is a supercharged car,has a large stall,and the blower/exhuast/fuel pump make enough noise that will drive you insane with any thing remotely close to daily driving.

 

Only romp on it once and a while, yeah right Just about everytime I go out the racegas comes on for a quick blast. You also have to remember being able to control the car will be another thing. I ended up in the ditch in a buddies car because the it came out from under us at 90mph. That could be enough to scare someone into selling the car. Another thing to consider, some people dont even have the ***** for this kind of performance. I've had a few in the passanger seat that could tell you this
Anyway, if you plan on doing this as a street car I would probably go nitrous or turbo, just because you have control of the power coming out of the hole. With a blower, for example, your pulley is set at 20psi, no changing that out of the hole. You get the point. You also have to remeber, at this level everything is pretty much custom, unless you run the MR. big shot

But when its all said and done and you take it out and race that hyabuse, it feels good as he appears in the rear view mirror. At this point you know you got some serious ****

 

you can get Busa's to race you? we tried in the room mates car with no luck....................maybe it's that damned parachute on the back