I need some good opinions here. I have an L98 GTA with 108,000 miles, and I've run a best of 14.85@93m.p.h. with a 2.0 60ft time. I really want to put NOS on my beast but I was wondering how much it will REALLY drop my time. I dont want to spend all the money on the whole setup if it wont help me that much. My motor averages 155-160lbs compression across all cylinders, and burns about a half quart of oil every 3-4,000 miles, mainly because of valve seals. It seems to be a pretty strong little mill. Also, what would be safe for my motor? 75 shot? 100 shot? Performance gains for each? But I do think ill need to rebuild the ole R4 though. But please, all the opinions and facts I can get. THX

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1989 GTA, L98/auto, t-tops, Black w/ grey int.
Ran a 14.85 @ 93.4 mph BONE STOCK

 

Okay, just to let it be known, the more "stock" your engine is, the more N20 helps you. So the fact that you are stock is good in the nitrous dept. I have headers, flowmaster, and a 2k stall, and it takes off more than a second off my 1/4 time. I'm running 100 shot on my engine with 159,000 miles, it loves it....Nitrous is safe if used properly i.e. new fuel pump, new fuel filter, ect. U may wanna get those valve seals replaced though, that could turn into somthing nasty behind the bottle, and while your under there some new springs could'nt hurt....Good luck.

Zach

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Mods: Headers, K&N, 2k Stall, Custom shiftkit, 125hp Compucar N20 kit. Nitto 555R Drag Radials.

 

yea i have it on my 86 iroc i ran it on the stock engine and it knocked alot of the time it ran a 14.3 compared to its usual 15.2 and the engine was stock my new motor probalbly runs a 14.0 or better and i havent put too much money or time in it but my valve stems were leaking also and the motor had 135k miles on it put it on youll love it and it helped my new motor tremendosly

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86 Irocz, 305 bored 40 over, 211/221 comp cam,paw rocker arms 1.5,10:1 comp., stock heads, 100 shot of nitrous,

soon to be airflow research 190 cc heads, 373 gears to replace 273, and induction work

 

well, that sounds good. what will i have to do to be safe with a 100 shot? AFPR? fuel pump? bigger injectors? also, how hard is it to hook up? i need all the replies i can get.
THANKS

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1989 GTA, L98/auto, t-tops, Black w/ grey int.
Ran a 14.85 @ 93.4 mph w/ 305 exhaust (2 little crossflow mufflers), descreened MAF, TB coolant bypass, and casting wall ground down behind throttle plates.

 

I have a 127K mile 305,went from 13.4 to 12.3 with a 120,and running VERY rich.
Go with a good fuel pump,i have a 255lph intank,and get an afpr,the stock Injectors will be fine.
I would recommend a WET system,because it adds fuel with the nitrous.I have seen many dry systems hurt a car,cause the injectors couldnt keep up.

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1991 TA WS6 305/5 spd
Nitrous,hooker shorties,flowmaster 3" cat back,3.73's and a 160 shot of nitrous
DragStars 15x3.5 et fronts,15x10 rears with 275-50/15 BFG DR


1997 TA LT1
Draglites,15x3.5 sportsman pros
16x9 255-50/16 Comp TA's or Drag radials
Moroso CAI,no sway bar,dynomax non catback