Ok guys iv had my car now for about 2 1/2 years never had a ticket or acident. I have a 305tbi and im getting a little bored. I am thinking of a nos kit with a 75 shot! It has about 90,xxx miles on it. If i do get it done it will be bye a performance shop so i know its done right! I would really like to put a 350 and have 400hp but thats gona be a good 3,500 but most likely more.

So these are my mods!
Flowmaster 80 series (no cat)
3:73 posi
high performance shift kit /w corvette servo
I have all the emmisions off /w the A/C

Thats about it for makin any power. I dont know how fast i can run in a 1/4 but i would guess between 14.8-15.2 but not sure any guess would help! Lets say it ran 15 flat wat would it run then with a 75 shot?

So with a 75 shot i want to know how long i can trust my car? Will a 75 shot jus blow my engine? I would like to make sure to keep it for 3 years then im sure i will pull it. I just want to know how safe it is? I would hate to see it blown and jus sittin in the garage u know?

So be truthfull with me! Tell me how it is!

Thanks
kevin

 

75 will be a little boost for the motor but by no means will it be anywhere near the limits of the block and such. that motor will last forever on a 75 shot as long as its fueled and timed correctly for it. id say youd be in mid to high 15's with current mods and maybe mid 14s with a 75 if not high 14's. you could always run a higher shot such as 100-125 and itll put you well into the 14s and you might be able to touch 13s on a perfect run with the 125.

 

I just dont want to hurt my car by doing this. I want to have fun on the strait aways alittle just dont want to be with a car for a while. I might go to a 100 shot at the biggest.
thanks
kevin

 

I've been spraying a 150 shot for 3 years now with no problem on my lt1.

The most important part is to get it jetted properly with a good fuel system.

 

yeah i completely agree with vipershark11, a 75 shot will by no means harm your engine and i'd personally suggest a 100 shot because that also is okay for a stock 305 to handle. last month i had a friend who was selling his entire nitrous wet kit to me for $500 and installing it for me too, but i didn't have the money, but i was gonna have a 100 shot on my 305 TBI. now i do have the money but since then my plans have changed and i'm just saying screw it, i might as well wait a little longer til i have even more money to blow and get myself an LS1 or a a BBC and then go crazy with it. but yeah your 305 will be perfectly fine with a 75, man, you'll have a nice little boost to your ride with no harm done. hope it all works out well for you.

 

jetting 125 right now im my tbi...moving to 150.

Stock plugs and running 8 degrees MORE timing then stock since i burn my own chips, i just sprayed it on top of my modded tune. No problems so far. Though i wouldnt suggest anyone else do it haha...even accidently juiced it on 87 once.

14.2 @ 98 with a 2.2 sixty

 

Just remember to be safe get 1 step colder spark plugs and leave timing at 0 degrees initial unless you want to be really safe and retard it a couple of degrees, however ive heard of people advancing timing but i wouldnt recommend it. Like said above just make sure your fuel system is still functioning 100% because you dont want to lean out on nitrous. Trust me if you jet a 75 shot soon after you will want a larger shot i promise you this happens to everyone, when i first shot a 100 i wanted more after 1-2 sprays and i said i would never want more. Oh yea and premium gas is a big plus to stay safe also. With an intake/exhaust LO3 i pulled off a 13.5 @ 101mph but that was a perfect run and that was either a 125 or 150 cant remember it was a while ago.

 

I have been told before by a trans guy that the 700r4 cant handel nos? He said it ruins something in thier i dont know a hole lot about the transmissions but i dont know. Have u guys had any problems?
thanks
kevin

 

no this is only true for high horsepower engines, by that i mean over 400. i'm fairly certain that the 700R4 tranny will hold up well with a 100 or even 150 shot, (though with the 150 i'd worry more about the engine than the trans) but yeah your stock 305 only has 170 hp so add a 100 shot to that and its roughly the equivalent to adding a hundred or so horses to your engine all at once, which brings it to 270, thats perfectly fine for your trans to handle.

 

How often do u guys use ur nos? If i do get a kit should i get dry or wet kit? I dont know what the difference in them?
thanks
kevin

 

Back when i started running the nitrous i ran it everyweekend at least a 10Ib. bottle through it a weekend too. But like said above watch the 700r4 if its beat or old it may give out quickly the nitrous will kill it a lot quicker you can tell by how it shifts on the juice however it may hold up for a while if in decent condition. You will definately want a wet shot which is a nitrous solenoid and a fuel solenoid so it adds both nitrous and fuel at the same time. A dry shot is sprayed into a sensor such as MAF that will adjust for the amount incoming but isnt too wise on these cars. stick with a simple wet plate kit.