wuts up guys? im workin on a 88 iroc 5 speed. its my first car an i love it. i have to admit i was a mustang fan about a year ago but once a saw this iroc just sitting on the side of the road lookin like total s*** i knew that was the car for me. naturally i hate mustangs now, haha but anyway, i dumped about 1800 in it so far but all on interior: carpet, dash, plastics...ect, and a new paintjob which was about 1000 of that 1800. now that it looks good im lookin to get a little more power outta the 305 tpi. im pretty sure its pushin about 220hp but thats just based on the stats i looked up on my car. i cant do to much cause its an old egine an its got a lot of miles on it but it runs great so i think it can handle some more hp. i got about 500 bucks an i really dont know wut to get. an im pretty good with mechanics. like i can do most engine work myself but im no expert er anything. any ideas are welcome an greatly appreciated!!!! thanks.

 

Just put a bottle on it and call it a day.

 

X2 don't ever admit it has spray and everyone around will talk about the magical 305 TPI you have.

 

sounds like a good idea but u really think my engine will hold up? its got like 210,000 miles on it

 

Get some headers and put the remaining money toward a free-flowing exhaust.

Hope this helps.

 

Nitrous in moderation is a good thing. It won't hurt anything if you USE IT WISELY ON A SOUND MOTOR. It does a good job of cleaning the combustion chambers and intake runners too.

210K means nothing if the engine was well maintained from the start. Take some of that $500 and do a good QUALITY tune-up ie: plugs with the right heat range for your nitrous application, wires, cap rotor, high perf. coil, change all filters. I would put a new timing chain on it. With 210K miles there is bound to be a little slop in the timing set. This will throw off your valve timing, and it can also cause detonation. Detonation + nitrous = BOOM. Make sure your fuel pressure is correct too. Of course don't forget to keep your transmission fluid/filter changed often! Get a trans. cooler too. All of this should be about $225.

After the motor is ready for it, put a 75-100 kit on it, but keep a close eye on your fuel pressure, and check your spark plugs often. They'll show signs of trouble. Look to upgrade your fuel system as soon as you can (injectors AFPR, pump, etc.)

 

A 100 HP shot of nitrous for your V8 means that each cylinder must produce another 12.5 HP. By comparison, a 4 cylinder would put another 25 HP in each cylinder, so twice the abuse.

12.5 HP per cylinder is very, very doable on your car, assuming there is nothing catastrophically wrong with your motor.

www.jkvette.cz28.com has a pretty good primer on nitrous, check it out sometime.

 

If you dont want to use a spray 500 bucks can get you a nice roller cam/lifter set new true roller timing chain, 1.6 rolller rockers and maybe even some headers if you can find a cheap set.

James

 

i say full exhaust headers and catback with highflow cat/no cat then spray

 

As much as NOS sounds appealing (instant HP) i would do more work to it first. persoanlly i would add hp till i have full power coming out of the engine, that for me means high flow heads, intake manifold, bored and stroked with good pistons, add a hydro cam and timing chain and NGR plugs and extreme 3000 wires with better ignition and distributor, then NOS, with the heavily reoworked engine you could get 100-175 shot of nos and be within the limits, tho take in mind, with all of these mods you would have to rebuild the tranny and suspension, and the rear end.

soooo with 500 i would just say, headers and exhaust with plugs, most people don't appreciated spark plugs haha, get the right kind and they work wonders lol, get some wires and maybe a good distributor cap as well

 

Ive always heard that if you ever plan on adding any sort of EXTREME power adders to cars (i.e. nitrous), you should always make sure your drive train is sound?

 

he speaks the words of truth, you really wouldn't want to rip up your tranny up or twist something wrong, redoing the suspension would can knock .5 off your time even

 

I dunno, maybe. Right now his car is making no power, none, zilch, nada, nothing. Another 100 RWHP still won't put him beyond 300 RWHP. I seriously doubt less than 300 RWHP is going to start twisting up suspension components or rip up the transmission.

On that same note, at his horse power level, the biggest ET gain to be had is in more power. It's not like he is spinning the tires to the 330 foot mark at the drag strip because he can't hook it up. He has a stock 305, it probably doesn't even spin the tires if he leaves off the converter. There aren't enough suspension mods on earth to knock .5 off the ET of a stock 305 Camaro. There just simply isn't enough power for the car to benefit from increased traction, weight transfer, pinion angle, or anything else.

Listen man, lots of people don't like nitrous. Those same people usually don't know how nitrous works. Do what you want, but I think nitrous is the way to go. Do a compression test or leak down test, if everything looks good, spray that thing like a roach.

 

Alright, I have some free time at work, so here goes:

Power. From purely a physics stand point, power is directly related to how much gasoline you can burn in a given time. If you burn 2 gallons of gas during a 1/4 mile run, and I only burn 1 gallon of gas, you have released twice the energy I have and should beat me up pretty bad.

"Cool, I just put more gas in my motor with big injectors and more fuel pressure, right?" Not really. In order for gas to burn you need a couple things. First, the gas. Got that covered, big injectors and lots of fuel pressure. Second, ignition. Got that one covered too, spark plugs/distributor/coil/wires are new and installed. The last thing you need is oxygen. No problem, right? There is air all over the place, I'll just use what I need and rock on!

Unfortunately, you don't need air, you need oxygen. Air is about 19% oxygen by weight. So, for every 100 cubic feet of air your motor sucks in, it is only actually using 19 cubic feet. The other 81 cubic feet of stuff is just along for the ride.

The more oxygen you can put into the motor, the more fuel it can burn, and the more power you can make. We've already established that getting fuel into the motor is no problem, big injectors and big fuel pressure solve that, so the problem is how to get more oxygen into the motor.

Well, you can use aftermarket cylinder heads that flow more. You can use a bigger cam that holds the valves open longer, you can use rockers with a more agressive ratio, etc... All in the attempt to more air, and hence more oxygen into the motor.

You can add a supercharger or turbocharger. Stuff air in faster than the engine would normally consume. More air = more oxygen = the ability to burn more fuel = more power.

You can use a bigger engine. A bigger engine inhales more air for each revolution, which means it consumes more oxygen per revolution, which allows it to burn more gasoline per revolution, which makes more power.

Nitrous. Nitrous is 33% oxygen by weight. If you add nitrous, you displace normal air with nitrous oxide. Instead of breathing in 100% normal air, your engine would breath in 70% air and 30% nitrous oxide. Since there is more oxygen in the nitrous than in the air, you've added oxygen to your motor. Now, all you need is more fuel and you are making more power.

Nitrous works just like everything else. More oxygen, to burn more fuel, to make more powa!

Onto your car...

The 305 TPI, while awesome at getting around town and getting groceries, is not the drag strip dominator. Fuel economy, yes. Beating down the local 5.0 Mustang punk, not so much.

I would be suprised if your car is making more than 200 RWHP the way it sits right now. At this stage in the game, you really aren't making the power to take advantage of suspension and traction mods. If you do have traction problems, a set of drag radials will more than take care of it. If you start to do drive train mods, a torque converter for example, I really doubt you'll pick up much ET. Using the converter for an example, it would allow you to rev the engine to a higher RPM before you start to move. That's great, except that you aren't really making any more power at the higher RPM than you are at the stock coverter speed. For you, launching at 1500 off the stock converter, and coming out at 3000 with an aftermarket converter, isn't a drastic difference, less than 20 HP I would bet. Not only will you not benefit greatly from the converter, but it will shock the drivetrain harder than the stock converter would, which could potentially lead to other issues.

Again, with such a small amount of power to work with, there really isn't much you can gain from mods that don't directly add power. Which brings me back around to nitrous...

A 100 HP shot, brought on at 2500 and turned off 200 RPM's before the shift would probably knock a full second off your ET. Not spraying through the shift will keep the transmission alive, infact, the transmission won't even know the nitrous is there if you don't spray through the shift. You'll still be launching off the stock converter, putting no additional stress on anything until the car is moving and the RPM's have reached 2500. Once you hit 2500 RPM, the drive train is tight, weight is transfered, the tires are stuck, and this is the best possible time to start to add power. Both from an ET stand point and a reliability stand point.

As long as the rings are still in decent shape, the motor should tolerate an additional 100 HP pretty much forever. It shouldn't matter if you plan to add that 100 HP via nitrous, heads/cam, blower, etc... It's all the same to the bottom end, more oxygen and more fuel = more power. The piston can't tell how the oxygen got into the chamber.

 

you know i think a 100 shot is a great idea. but on a engine with that many miles its a risk. not because its nitrous, but because it will add 150 lb ft which is the stuff that breaks engines. especially the way the giggle gas comes on all at once.

 

That's why I posted everything I did in the 6th post down... Gotta have a solid motor before you add any horsepower.