LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Nitrous limits

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Old May 31, 2005 | 10:46 AM
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Default Nitrous limits

How much nitrous can a stock bottm end lt1 take? I'm planning on getting a kit don't know which one yet but I want to know how much I can safely use.
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Old May 31, 2005 | 10:55 AM
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I Have friends who spray 150 all the time with out any problems. Heard of some people going bigger but I wouldn't.
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Old May 31, 2005 | 03:56 PM
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been spraying a 150 wet shot on mine for quite some time with no problems. if you were to go that high make sure u invest in a new fuel pump. anything higher would be engine suicide.
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Old May 31, 2005 | 03:59 PM
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I agree. I have a couple friends spraying 150 on a stock bottom end.
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Old May 31, 2005 | 04:20 PM
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I'd agree that 150 is about the limit....anything more than that with any regularity and you're asking for your ringlands to give out.
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Old May 31, 2005 | 07:52 PM
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You should be able to spray 150.
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Old May 31, 2005 | 08:45 PM
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The limit is usually more the heads and cams ability to move that much exhaust, some guys spray 200+ on top of heads and cam but most people do not have a setup that will support that and will not go any faster after about a 150-175 shot. People don't give the stock engine as a whole enough credit.
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Old May 31, 2005 | 08:52 PM
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150 wet is as much as you wanna go unless you just really want a good reason to build a stroker.
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Old Jun 1, 2005 | 12:10 AM
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So 150 seems to be good what can I do to make sure I don't have a mishap with the nitrous? The car is my d/d so I don't want to blow it up.
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Old Jun 1, 2005 | 12:48 AM
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Yeah id say 150 is good too...but just remember...
YOU SPRAY YOU PAY
and then you get a stroker and have even more fun
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Old Jun 1, 2005 | 12:59 AM
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Originally Posted by cb94ta
So 150 seems to be good what can I do to make sure I don't have a mishap with the nitrous? The car is my d/d so I don't want to blow it up.
invest in a window switch first off, and it wouldnt hurt to make sure all fuel components are working at their best, or even better buy aftermarket upgrades. Make sure you have a well flowing fuel filter, good fuel pump, good injectors, good MAF if you are going to run a dry kit, and definately use the full throttle activation switch.

and it wouldnt hurt to start off with the small jets like a 75 and work your way up.
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Old Jun 1, 2005 | 02:12 AM
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Fuel pressure safety switch, window switch, WOT switch, colder plugs, etc....everything you can to be on safe side.
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Old Jun 1, 2005 | 02:32 AM
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yeah definetly start smaller and work up to it...My tnt 100 would put the car sideways on a 50 degree day at 80mph with 315s out back so it can catch you by surprise..Also get a bottle warmer otherwise there is no point in spraying it.
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Old Jun 1, 2005 | 02:46 AM
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u can go 150 with out doing a things really ... pump gas with some plugs and ur fine...with a 175 u should pull alittle timeing out and run a mix of race/ pump gas.... i have a 200 on my car now... and i run colder plugs and usually mostly all race gas(110) when i run it at the track...the motor is 100% stock .. i have a hooker long tube headers and svo #30 injectors....the best to date is 11.27 at 119.8 with only 700psi bottle pressure... next time i go to the track hopefully next week im hoping to go 10's which i think it easily should...
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Old Jun 1, 2005 | 08:41 AM
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What's the deal to with the cold fusioin nitrous kit on ebay is it any good?
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Old Jun 1, 2005 | 11:54 AM
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Originally Posted by 96capricemgr
The limit is usually more the heads and cams ability to move that much exhaust, some guys spray 200+ on top of heads and cam but most people do not have a setup that will support that and will not go any faster after about a 150-175 shot. People don't give the stock engine as a whole enough credit.
Not a hack but what CFM requirements and/or exhaust lift and duration on the exhaust side do you think is necessary for something bigger than a 175?
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Old Jun 1, 2005 | 01:59 PM
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damn, i forgot about the plugs...run NGK TR6s (stock no. 4177), and also, like 97M6Formula said, get a bottle heater, or go the cheap way and rig one up using a heating pad, ac/dc power inverter, and some thick rubber bands, lol!
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Old Jun 1, 2005 | 07:30 PM
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Originally Posted by The LT1 That Could
damn, i forgot about the plugs...run NGK TR6s (stock no. 4177), and also, like 97M6Formula said, get a bottle heater, or go the cheap way and rig one up using a heating pad, ac/dc power inverter, and some thick rubber bands, lol!


i woudl disagree on the tr6 plugs... once u go higher than a 150 they blow so fast its not funny..... i woudl go with a R42LTS its an ac delco plug thats what i run and a few other lt1 nitrous guys i know
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Old Jun 2, 2005 | 06:24 PM
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didnt even know that. thanks for the info, bcuz im spraying the 150 this weekend.
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Old Jun 2, 2005 | 06:34 PM
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autolites 104 are good and if u have high compression u can go two steps colder with a 103
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