LSWHO

How much is safe to spray with no timing pulled?

50 shot?
100 shot?

I did a 75 shot on my GTP with no timing pulled and it was a v6 with forged internals

AutoRoc

Not a good thing to be asking. you have the good safety parts and you might be ok to spray a little bit but pulling timing is beneficial to making the power with a nitrous setup. Colder spark plug heat range, and 93-94 octane make things safer but being able to adjust timing is the most important part of a clean, smooth, safe running combo.

bombebomb

From what I have read, something to pull timing with is the last place I would skimp. Unless you plan on running some high octane fuel. (93 is not what I mean when I say high octane).

LSWHO

So an LT1 with stock timing can take 0hp from nitrous? I find it hard to believe. That's amazing that a lot of other cars can take more with none pulled, yet in LT1-land only 0 hp is acceptable. I understand playing it safe, but sometimes it's just overboard. I don't at all buy the fact that an lt1 can't take a 50 shot at stock timing.

Has there been a single person in history to do that?

axehead

i've read posts where guys say that up to a 150 shot is ok with stock timing.

jsetzer

Name me more than a couple of other engines that run upwards of 40 degrees timing advance stock and are 10.5:1 compression? Not many out there are there?

Add in some hyperucraptic pistons and its disaster if something goes wrong. If it goes right then all is set.

I ran a 150 very wet shot for quite a while on a bolton motor for quite a while - full timing. Never had an issue. I ran 150 max - most times it was 100 just because I was worried. 150 was to/from/on the dyno.

I didn't trash my first motor until I cam'd it.

Boosted_Z28

My philosophy is to always play it safe and would never consider it to be overboard. If you are asking someone on this board to give you their blessing that you are going to be safe in spraying your LT-1 with any amount of N2O without adjusting the timing accordingly, it probably won't happen. Could you probably use a 50 HP setup without pulling timing and be okay? Possibly, but why take the chance? You will more than likely find that retarding the timing when spraying the motor will cause the motor to make more power, which is an added bonus.

You spent all that money for your N2O "kit", you should consider spending a little more and purchase something like the Mallory 685 box. A solid, stock LT-1 motor will more than likely live a good long life with a 150 HP kit, providing your tune-up is safe. This includes cooler spark plugs and retarding the timing accordingly. If you haven't already, search this section for information regarding these subjects...you'll find there is a lot of good quality information which is backed up with dyno numbers and track performance.

LSWHO

This I have never heard/seen this before... None of this really matters anymore as I didn't buy the nitrous.