Nitrous on 3500?

[caffeine]

I'm about to buy a wet nitrous kit for my Fiero so I can run some good 1/4 mile times when i take it to the track in a couple of weeks.

I've never worked with nitrous before but if a 3500 can take 12 psi of boost I would be surprised if it couldn't handle a 100hp shot of nitrous.

I realize I'll need a purge solenoid but will I need a bottle warmer as well? Also, is it better to adjust the crank trigger to retard timing or should I burn a new chip? Is a 100 shot too much for a completely stock engine? Will I start slipping my clutch?

[pocket-rocket]

Tank heater will help a good bit from what I read. As for slipping your clutch, well, that depends on your clutch. For spark, yeah, burning a new chip would be ideal. Heck, go on test and tune night and get it dialed in there if you have a wideband. There is a rule of thumb floating around that states a stock engine should be safe with an x% of total stock power output added with nitrous but I forgot what it was. Don't quote me on it but I want to say it was something like 30%, so on a 100hp engine you should be able to safely run a 30hp shot, 60 shot on a 200hp engine, ect., this being on an stock engine without any other kind of power adders. If you have a turbo on it (which I assume from your 12psi. comment) I wouldn't put a big shot on it, but a small one, like around 20hp to use it as a charge cooler instead of another power adder.

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[caffeine]

No I don't have a turbo I was just referencing others who have boosted a stock 3500 without blowing up the motor

[pocket-rocket]

Then I would imagine you could get away with it, especially since the nitrous wouldn't flowing as much as turbo engine would be in boost.

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[1988GTU]

The gains of nitrous for these motors dont seem to be as rewarding when compared to boost. Low boost verse up to a 100 shot is about when nitrous starts to become less desirable for end gains. I've netted over 400HP on boost with near stock internals and a very rich tune; I do not feel confident you could get the same numbers with nitrous unless you put in some serious parts and have a very good tune. Nitrous is pretty harsh when it hits... sure you could control the progressive rate, but it's still producing a super violent combustion event when it meets those pistons.

[caffeine]

Well I just ran a 13.686 with a 75 shot and I'm really happy with that time (it exceeded my expectations). No clutch slippage either with the stock 4 speed clutch.