I keep wallowing in the fact that my car's only got like 135 HP. But the other day I was looking up the specs on the IROCs and z28s. I couldn't believe that the 350s only had 245 HP. Especially after all the crap those v8 guys talk Suddenly it occurs to me that after a 100 HP shot of nitrous, I'd be right there. Now I'm actually thinking of running like a 70 shot, cause I'm not quite that suicidal. I emailed NOS and they said that the kit for the fiero (#05120) would work for as long as I had a vacuum controlled fuel pressure regulator. According to the diagram on the sticker under the hood, I do (that's how they told me to check anyway). My main concern is the tranny, cause I've got a T5, and I've heard people say that they like to break. But what should my compression be to be safe? I'm planning on rebuilding the distributor and getting a new coil and plug wires, all accel. I'm also thinking about a fuel pressure gauge too. I just don't want to spend the the $525 for the kit, just to blow up my engine the first time I use it. Any suggestions? Thanks, Joe

 

245 horsepower and 345 ft/lbs of torque vs 135 horsepower 160 ft/lbs. There is a huge difference. I doubt a 100 shot would nearly make up for it. That's like someone comparing an L98 to an LS1, "it's only got 305 horsepower."

If you're going to spend $600 on no2, you may as well buy a bigger engine, or a car with a bigger engine for that matter.

 

I suppose what I said is sorta out of context. I've been looking at getting a 98 camaro with an LS1. Those have 310 HP. The SS stock has 325 HP and with the SLP performance package, clocks in somewhere around 380 HP. To me, those are cars that are fast stock. My comment was more in regards to how some of the v8 guys think their engines are the be all and end all, when really they'd get their *** kicked by an LS1. And if you know where I can get a running 350 in good condition with a good tranny, engine mounts and ecm for under $600, let me know. But I sorta doubt that you could do an engine swap for the cost of nitrous.

 

www.geocities.com/overlift will answer your questions. I know a stock motor can run a 75HP shot all day long. Nitrous Express hada kit for under 550...

 

Funny how it's all relative, eh? We could make fun of v8 owners for wasting their time on their 350's when they could put an LS1 in. 'Course, we don't...

 

Hey joezero, you might want to look at a kit for a late '80s 5.0 liter Mustang for your car. I have this kit on my 1992 3.1 liter V6, and it has worked very well. It is the cheater kit that can be adjusted by changing jets. In another thread a couple of months ago, I put some pictures up. The system is set up to add about 75 HP at 750 pounds of bottle pressure. Since the fuel pressure regulator gets pressure put on it to raise the fuel pressure, the system self adjusts to different pressures, to a point anyway. At about 1050 PSI on the bottle, the thing is probably running right at 100 to 105 HP. I have used this system since 1996, and have probably run about 20 or more bottles through there, and have had no reliability problems whatsoever.

As far as 'making up the difference', there is not a STOCK 305 auto car that I have run that can beat me, HO or otherwise, when I spray 'em. The 5.0 HO 5 speed I don't know about because I have never run one. I have not raced a late 80's early 90's 350 car either. I have run several 5.0 5 speed mustangs with mixed success. If they are totally stock, I can beat them. If they have underdrive pulleys, cold air boxes, lowered gears, or anything like that, then I will lose. It still isn't what I can call fast, but it sure has been fun. There is definitely no way that you can gain more power for less money with your car. The kit for this was around $500 back in 1996. Good luck with whatever you decide. The thing that I hate is having to take the bottle and have it filled.

Oh, my car is an auto, so I can't comment about the effects on the T5. Make sure that your kit has a micro switch activated by the throttle body, so that you only get spray at WOT.

 

What's really funny is that there's a 110 HP difference between us and a stock 350. And there's a 135 HP difference between a stock 350 and an SS with the SLP options.

Pontiacguy1, I've got a few questions. 1. Do you have a fuel pressure gauge? Or any other sensors or anything that help keep the nitrous setup in good working order? 2. I saw the pics you posted, but I didn't see any solenoids, where did you mount them? I have to get my car smogged every two years, and it'll fail if they see NOS on it. So I was thinking I might try and run the nitrous line under the upper part of the plenum, with the jet attaching to the underside of the intake right in front of the TB. Otherwise, is the kit something that you can at least pull all of the parts out of the engine in an hour or two? 3. With the WOT switch, that means that your spraying nitrous in every gear right? I'm just worried about 1st and second gear that you'll end up just sitting on the line spinning the tires. 4. Is there a way that I could wire in an LED so that it would turn on when the NOS solenoid opens, so that I know I'm spraying? Sorry about all the questions. Thanks, Joe

 

Sounds like some really good questions:
(1) No, I do not have a fuel pressure gauge. I have had a lot of people tell me that I am crazy not to get one, but i haven't had any trouble, and the system has been working for several years now. I just really don't want to add one. I did add a pressure gauge to the bottle.

(2) The solenoids are mounted on the passenger's side strut tower. Take a look at the pictures again and you will see them. Yeah, you could take your upper intake off and drill and tap the nozzle in behind the throttle body there. That way it would be out of the way.
You could also mount the solenoids on a plate and use a plug in your wiring. This way, all of the lines could be disconnected and plugged and the solenoids removed easily before you went and got tested.

(3) yes, I spray it right off the line. Mine is an automatic, but the converter will flash to over 2000 RPM, so I don't worry too much about hitting it at too low an RPM and causing engine damage. If you are worried about hitting the tires too hard, then mash it 4/5 of the way down, and then mat it when you hit about 3500 RPM or so. That would be the easiest way to do it. You could also wait to throw the other switch until you reach about 15 mph or so. I have swapped in a posi disc brake rear, so I still don't spin it too much if I have any traction available. I can leave several feet of posi black marks, but It will still hook pretty good with the nitro.

(4) the led light or something like that would be really easy to do. There are three things that I have to do to get my system working. I first open the bottle a couple of rounds. I then throw a switch under the dash that arms the system. Once it is armed, when you mash the throttle to the floor and the mini switch on the throttle body is made, then it sends power to the solenoids and opens them. The wire for your light could come from the outlet side of your throttle body switch, and just go back to the dash. Believe me, though, you will know if it is spraying or not.

 

I can't seem to fine the kit that you have anywhere. All the one's I've seen were plate sytems, so I might have to go with the fiero kit. You wouldn't by any chance have the part # for your kit would you? Also, I'm kinda curious how the kit connects to the fuel pressure regulator. Thanks, Joe

 

Hey Pontiac1 can you link that post so I can see it? My wife's 3.1 needs a boost

Eric

 

i can name 100 people off the top of my head that can buy an L98 camaro for $3000, and when they are finished building it, have a mid 12 second car that costed less than 1/2 the price of a new LS1 car.......thats what so great about V8's: their versatile and cheap to build

 

hate to reign on your parade but horsepower isnt everything, TORQUE actually plays a bigger role in making cars like these quick

so now i ask you, please compare the torque specs for:

2.8 MPFI engine
L98
LS1

all horsepower is, is how quickly torque multiplies

 

Look, all I'm saying is that there's always somebody bigger and that sometimes the person who's littler that you are isn't that little. By which to say that I don't criticize people who want to build an L98. Hell, I don't criticize people who want to try and build a high performance car out of a 1.4L 4 cycinder engine. It sounds to me that you think I'd pull up to a guy in an IROC and say "hey, with a 100 shot of NOS, my engine is only 10 HP off of your stock L98. By the way, why are you wasting your time and money on an L98, when an LS1 would be so much better". I'd have to be a complete dumbass to do that! But what I am saying is that you can always name a better engine. I might say swap in an LS1 and you might turn around and say "why waste time/money on an LS1 when you could just swap an LT5". And you could keep going and going. But when it comes down to it, I think 95% of us use the engine that was in the car when we bought it. After all, I don't see any 4th gen guys swapping out their LS1 for an L98 cause they're cheaper to build. So I'm gonna try and push my little 2.8 to its limits, even if it doesn't come close to an L98 before I even think about an engine swap. Besides, I'm not planning on spending every cent I have on this car. I'd like to own a late model car sometime this century.

 

its a little different in the V8 world:
sure stock for stock an LS1 has higher output than a L98, but if you compare the prices.......thats where the big difference is..........so therefor......within that price differential ratio, you can get your L98 running just as good probably as a LS1........same thing with the LT5.........that motor was way over-rated.........sure it puts out 405HP (93-95) but because of its over-complicated design, it costs a ton of money to build anymore power............

 

i could buy a 632bbc from pat musi performance for $25000 and make 1100hp without the nitrous that comes with the motor, then make close to 1800hp with the spray.....but that's getting a little out of hand. i don't understand why we have to dog on each other so much. i mean, come on! we are all 3rd gen 60* v6 owners, we all have at least that in common.

 

The kit for my car was for a late '80s fuel injected 5.0 liter mustang. You might just have to call summit or NOS and see what it is. It only has one nozzle that is plumbed into the intake, not a plate like some of them do. I do not have a part number for it, since it has been about 6 years since I bought it.

It has two solenoids, and one of them uses a line that connects in with the fuel pressure regulator. It puts some additional pressure on the fuel pressure regulator to keep it closed longer and keep the fuel pressure higher. That way, more fuel comes through the stock injectors. I have not had to modify my fuel system at all to do this, either. The post that the pictures are in was kinda misspelled. I think it was called MPFI Noszile kits or something like that. If it has been removed, I can repost the pics.

As far as what 1991tealRSt-topGuy was saying, well, not everyone wants to do what you are advising. I have owned my '92 firebird since it was new. I am not about to sell it because I love it too much, and I am not going to mess up a perfectly good car by swapping in a V8. I really want to do something a bit different, and I want to leave it a V6. I agree that the V8s available in these cars have huge aftermarket support, and are more easily modified. If your goal was ultimate performance, then that's the engine you should concentrate on. Most of the guys here are not trying to break into the 12's, but are trying to get about a second quicker than they are now. I am not trying to flame you, I just don't think that we are talking about the same things here.

 

Thanks for the info pontiacguy. And I totally agree with you. My goal isn't a 7 second car. Hell, I've never been to a drag strip and never plan on going. I know that probably my last few posts have been mostly incoherent babble, but I'm just getting to the point where it seems that if I ask anything other than "how do I fix this" or "how do I put in a bigger engine", then a bunch of people show up and say your an idiot. https://www.thirdgen.org/techbb2/sho...hreadid=129130 That's probably the best example of my asking a simple question, and a giant debate ensuing.

Now I know that no matter what I do to my v6, i'll never be able to beat a modded 350. All I want is when some guy pulls up in a totally stock z28, I don't want my modded car to lose. To me that makes everything I did to the car feel like a waste. But at the same time I don't have the financial wherewithall to swap in a motor. That's why I'm so concerned about the effects of nitrous on my transmission, cause if I have to replace/rebuild it, it's already not worth trying to mod the v6.