Nitrous ?'s
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Joined: May 2003
Posts: 186
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From: BAKERSFIELD
Car: 1992 Firebird
Engine: 305 TBI (LO3)
Transmission: TH-700R4 w/Shift kit
Nitrous ?'s
i just bought a nitrous kit and i was wondering what would be safe? i have a 170,000 miles and mods and car in sig. i have the bottle and line fittings and sloenoids its not a "kit" i bought it in pieces but its all the same. and i need to find a place to get a tbi nitrous plate. and i was told by people that they have had 100 shot with about the same miles and have had no probs. so how much is ok i was thinking a 50 or 75 shot wet. but any advice would help. i have talked to people that know alot about nitroue and think i can run a 100 but u guys know more about my car then they do. thanks
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Joined: Sep 2003
Posts: 113
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From: rockford ill
Car: 92 firebird
Engine: A small block something?
i gave my old 305 tbi 150 shot with a good fuel pump,injectors,ect ,ect
i got a double fogger with a tbi intake ill sell got a chip for it and everything you need.
name a price??? kit has one bad soilinoid
all wirind and n20 chip included
btw i got jets to make a 75,90,125, 150,
i was just tryin to fry my 305 before i put the other motor in.toke the 150'r like a soldier so it never happened
i got a double fogger with a tbi intake ill sell got a chip for it and everything you need.
name a price??? kit has one bad soilinoid
all wirind and n20 chip included
btw i got jets to make a 75,90,125, 150,
i was just tryin to fry my 305 before i put the other motor in.toke the 150'r like a soldier so it never happened
Last edited by rustbird; Dec 14, 2003 at 12:17 AM.
Senior Member
Joined: Nov 2000
Posts: 727
Likes: 1
From: Charleston, WV, USA
Car: '86 IROC-Z + Misc. project cars.
Engine: Supercharged + Nitrous TPI 355 CID
Transmission: Art Carr built Th700r4
I'd say assuming that the fuel pump is up to it, and the rest of the engine is sound then 100-125 should be safe. If it's burning any oil fix that first, you want no detonation.
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Member
Joined: May 2003
Posts: 186
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From: BAKERSFIELD
Car: 1992 Firebird
Engine: 305 TBI (LO3)
Transmission: TH-700R4 w/Shift kit
the valve guides are bad it smokes when i start it but thats it. no smoke when i drive. it seems like a pain just to change the valve guides and the stuff up there and still have 170k on the bottom end but if i need to so i dont go boom then i guess i will have too
Supreme Member

Joined: Jun 2001
Posts: 9,550
Likes: 4
From: Charleston, SC
Car: 91 Camaro Vert
Engine: 02 LS1, HX40
Transmission: 2002 LS1 M6
my thoughts on this:
if i were doing it, i would get a carb intake and run a carb plate setup with a TBI adaper on top... my reasoning is, IMO you would get more even flow to all cyls... plus it cant hurt.. not needed, but its just how i would go with it....
as far as the stock pump, well, thats kind of a gray area.... at thoes miles, the pump may be just bearly flowing enough for the stock setup, or it may be working great and support +100 hp... you have no real way of knowing...
unless this is a "lets blow up a 305" exersise, id replace the pump before i ran any N2O thru it..... but thats my extreme saftey side point of view on it...
and personally, i wouldnt run over 100shot if i wanted to keep the motor.
if i were doing it, i would get a carb intake and run a carb plate setup with a TBI adaper on top... my reasoning is, IMO you would get more even flow to all cyls... plus it cant hurt.. not needed, but its just how i would go with it....
as far as the stock pump, well, thats kind of a gray area.... at thoes miles, the pump may be just bearly flowing enough for the stock setup, or it may be working great and support +100 hp... you have no real way of knowing...
unless this is a "lets blow up a 305" exersise, id replace the pump before i ran any N2O thru it..... but thats my extreme saftey side point of view on it...
and personally, i wouldnt run over 100shot if i wanted to keep the motor.
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Senior Member
Joined: Nov 2000
Posts: 727
Likes: 1
From: Charleston, WV, USA
Car: '86 IROC-Z + Misc. project cars.
Engine: Supercharged + Nitrous TPI 355 CID
Transmission: Art Carr built Th700r4
how much nitrous can the stock pump handle?. and what kind would i need to get to flow for a 100 shot? thanks
Nitrous express says a stock pump will take you to 125 HP safely.
That is assuming that it is in good condition. If your pumps condition is in doubt a new stock replacement (AC Delco or Walbro) should be sufficient for 125 HP.
Supreme Member

Joined: Jun 2001
Posts: 9,550
Likes: 4
From: Charleston, SC
Car: 91 Camaro Vert
Engine: 02 LS1, HX40
Transmission: 2002 LS1 M6
Originally posted by IROCKZ4me
Nitrous express says a stock pump will take you to 125 HP safely.
That is assuming that it is in good condition. If your pumps condition is in doubt a new stock replacement (AC Delco or Walbro) should be sufficient for 125 HP.
Nitrous express says a stock pump will take you to 125 HP safely.
That is assuming that it is in good condition. If your pumps condition is in doubt a new stock replacement (AC Delco or Walbro) should be sufficient for 125 HP.
id also add, that if you're going to put a stock replacement pump, you can get a walbro255 for about the same price, and somtimes less if you find a deal online....
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